Porsche

Transfer Box Input Shaft Oil Seal. 
The Genuine Porsche Transfer Box Input Shaft Oil Seal (Part Number 9Y0321199B) is a precision-engineered drivetrain sealing component designed to prevent oil leakage from the transfer box on compatible Porsche Cayenne models.

Fits:

• Porsche 9YA Cayenne V6 3.0L Petrol (340Hp) 2018-23
• Porsche 9YA Cayenne Coupe V6 3.0L Petrol (340Hp) 2019-23
• Porsche 9YA Cayenne E-Hybrid V6 3.0L V6 (340Hp) 2018-23
• Porsche 9YA Cayenne Coupe E-Hybrid V6 3.0L (340Hp) 2020-23
• Porsche 9YA Cayenne S V6 2.9L Petrol (440Hp) 2018-23
• Porsche 9YA Cayenne Coupe S V6 2.9L Petrol (440Hp) 2019-23
• Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
• Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
• Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
• Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23
• Porsche 9YA Cayenne Turbo S E-Hybrid V8 4.0L (550Hp) 2019-23
• Porsche 9YA Cayenne Coupe Turbo S E-Hybrid V8 4.0L (550Hp) 2020-23
• Porsche 9YA Cayenne Coupe Turbo GT V8 4.0L (640Hp) 2021-23
• Porsche 9YA.2 Cayenne V6 3.0L Petrol (353Hp) 2023>>
• Porsche 9YA.2 Cayenne Coupe V6 3.0L (353Hp) 2023>>
• Porsche 9YA.2 Cayenne E-Hybrid V6 3.0L (470Hp) 2023>>
• Porsche 9YA.2 Cayenne E-Hybrid Coupe V6 3.0L (470Hp) 2023>>
• Porsche 9YA.2 Cayenne S V8 4.0L Petrol (474Hp) 2023>>
• Porsche 9YA.2 Cayenne S Coupe V8 4.0L (474Hp) 2023>>
• Porsche 9YA.2 Cayenne S E-Hybrid V6 3.0L (519Hp) 2023>>
• Porsche 9YA.2 Cayenne S E-Hybrid Coupe V6 3.0L (519Hp) 2023>>
• Porsche 9YA.2 Cayenne GTS V8 4.0L Bi-Turbo Petrol 2023>>
• Porsche 9YA.2 Cayenne GTS Coupe V8 4.0L Bi-Turbo 2023>>
• Porsche 9YA.2 Cayenne Turbo E-Hybrid V8 4.0L (739Hp) 2023>>
• Porsche 9YA.2 Cayenne Turbo E-Hybrid Coupe V8 4.0L (739Hp) 2023>>
• Porsche 9YA.2 Cayenne Turbo E-Hybrid Coupe with GT Package V8 4.0 (739Hp) 2023>>  

Diagram Ref No 6

Manufactured to Porsche's original equipment specifications, this radial shaft seal provides a reliable sealing barrier around the rotating input shaft where it enters the transfer box housing.

The transfer box is an essential component of the Porsche Cayenne's four-wheel-drive system, responsible for distributing engine torque through the drivetrain. Its internal gears, bearings and associated moving components rely on the correct quantity of lubricating oil to operate efficiently and minimise friction.

The input shaft oil seal helps retain this vital lubricant within the transfer box while limiting the entry of dirt, moisture and external contaminants.

Constructed for demanding drivetrain operating conditions, the seal is designed to accommodate continuous shaft rotation, temperature changes and normal mechanical loads.

Over time, the original oil seal can deteriorate due to ageing, heat exposure, friction, shaft wear or contamination. A worn or damaged seal may allow transfer box oil to escape, potentially reducing lubrication and increasing wear on internal drivetrain components.

Replacing a leaking or damaged seal with a Genuine Porsche component helps restore the transfer box's sealing integrity, maintain the correct lubricant level and protect the four-wheel-drive system against avoidable mechanical damage.

Ideal for transfer box oil leak repairs, drivetrain servicing and preventative maintenance, this genuine replacement oil seal offers factory-correct dimensions and fitment for the specified Porsche application.

What This Product Does:
The transfer box input shaft oil seal is a critical sealing component within the vehicle's four-wheel-drive transmission system.

Its primary functions include:

• Prevents Transfer Box Oil Leakage: Creates a seal around the rotating input shaft to help prevent lubricant from escaping the transfer box housing.
• Maintains Lubrication Levels: Helps retain the correct quantity of oil required for reliable transfer box operation.
• Protects Internal Gears and Bearings: Supports effective lubrication of the transfer box's mechanical components.
• Prevents Contamination: Helps reduce the entry of dirt, dust and moisture around the input shaft opening.
• Accommodates Shaft Rotation: Maintains sealing contact around the shaft during normal drivetrain operation.
• Reduces Lubricant Loss: Helps prevent gradual oil loss caused by a worn or deteriorated sealing surface.
• Supports Drivetrain Reliability: Helps preserve the operating conditions required for dependable four-wheel-drive performance.
• Reduces Premature Component Wear: Helps maintain the lubricant supply necessary to minimise friction and mechanical wear.
• Maintains Transfer Box Integrity: Provides the factory-specified sealing arrangement between the input shaft and transfer box housing.
• Supports Long-Term Transmission Durability: Helps protect the internal drivetrain components against damage associated with insufficient lubrication.

Symptoms Of Wear Or Failure:
Transfer box input shaft oil seals are exposed to continuous shaft rotation, lubricant pressure, temperature fluctuations and mechanical vibration.

Over time, the sealing lip may harden, wear or become damaged, allowing lubricant to escape.

Common symptoms of a worn or failing transfer box input shaft oil seal include:

• Transfer Box Oil Leakage: Oil may seep or drip from the area where the input shaft enters the transfer box housing.
• Oil Stains Beneath the Vehicle: Small oil spots or puddles may develop underneath the transmission or transfer box area.
• Visible Oil Residue: Wet or oily deposits may appear around the input shaft flange, transfer box housing or nearby components.
• Low Transfer Box Oil Level: Continued leakage can gradually reduce the amount of lubricant within the transfer box.
• Hardened or Deteriorated Seal: Ageing and heat exposure may cause the sealing material to lose flexibility.
• Damaged Sealing Lip: Wear, tearing or deformation of the sealing lip may prevent effective sealing.
• Contaminated Surrounding Components: Escaping oil may spread onto nearby drivetrain components or underbody surfaces.
• Increased Drivetrain Noise: Significant lubricant loss may contribute to whining, humming or grinding noises from the transfer box.
• Drivetrain Vibration or Roughness: Severe lubrication loss or resulting internal wear may contribute to abnormal drivetrain behaviour.
• Overheating of Internal Components: Insufficient lubrication may increase friction and operating temperatures within the transfer box.
• Oil Leakage Following Repairs: Incorrect installation or damage during previous drivetrain work may prevent the seal from functioning correctly.
• Visible Shaft or Flange Wear: Damage to the rotating sealing surface may cause repeated leakage, even after a new seal has been installed.

Why Replacement Matters:
Replacing a worn or leaking input shaft oil seal is important for maintaining transfer box lubrication, drivetrain reliability and the long-term performance of the Porsche Cayenne's four-wheel-drive system.

Key Benefits of Replacement:

• Restores Effective Oil Sealing: Replaces worn or damaged sealing surfaces to help prevent transfer box oil leakage.
• Maintains Correct Lubrication Levels: Helps retain the lubricant necessary for normal transfer box operation.
• Protects Internal Gears and Bearings: Reduces the risk of excessive wear caused by inadequate lubrication.
• Helps Prevent Expensive Transfer Box Damage: Addressing oil leakage promptly may prevent more serious internal drivetrain problems.
• Reduces Oil Contamination: Helps protect the interior of the transfer box against external dirt and moisture.
• Supports Smooth Drivetrain Operation: Helps maintain the lubrication conditions required for reliable torque transfer.
• Reduces Premature Component Wear: Maintains a protective lubricant film between internal moving components.
• Genuine Porsche Quality: Manufactured to Porsche's original equipment dimensions and application requirements.
• Correct Factory Fitment: Designed to match the specified input shaft sealing arrangement.
• Supports Four-Wheel-Drive Reliability: Helps preserve the mechanical condition of the transfer box assembly.
• Ideal During Transfer Box Repairs: Suitable for replacement when the input shaft flange or related drivetrain components are removed.
• Cost-Effective Preventative Maintenance: Replacing a defective oil seal may help avoid the considerably higher cost of repairing or replacing a damaged transfer box.

Although the transfer box input shaft oil seal is a relatively small component, it performs an essential protective function within the drivetrain.

Even a minor oil leak can gradually reduce the transfer box lubricant level. If left unresolved, insufficient lubrication may increase friction, accelerate internal component wear and eventually lead to serious transfer box damage.

Replacing a defective seal with a Genuine Porsche component helps restore the original sealing arrangement and protect the transfer box against avoidable lubricant loss.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9Y0321199B

The product you are viewing cross references to these numbers

Hydraulic Clutch Tube With Hose. 
The Porsche Hydraulic Clutch Tube With Hose 982721387A is a genuine Porsche replacement hydraulic pressure line used within the clutch operating system of selected Porsche 718 Boxster and 718 Cayman (982) models with manual transmission.

Fits:

• Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
• Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
• Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
• Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
• Porsche Cayman 718 2.0L Manual (300 Bhp)
• Porsche Cayman S 718 2.5L Manual (350 Bhp)
• Porsche Cayman T 718 2.0L Manual (300 Bhp)
• Porsche Cayman GTS 718 2.5L Manual (365 Bhp)  

Diagram Ref No 7

The assembly combines rigid hydraulic pipework with a flexible hose section, allowing clutch fluid pressure to be transferred through the vehicle while accommodating movement and vibration between components.

When the clutch pedal is pressed, hydraulic pressure generated by the clutch master cylinder is transmitted through the clutch line to the slave-cylinder side of the system. This allows the clutch mechanism to disengage so that gears can be selected smoothly.

What This Product Does:
The hydraulic clutch line forms a sealed pressure path within the clutch operating circuit.

Its main functions include:

• Carrying pressurised hydraulic fluid through the clutch system
• Transferring clutch-pedal input to the clutch release mechanism
• Supporting smooth clutch engagement and disengagement
• Allowing the clutch to fully disengage during gear changes
• Maintaining hydraulic pressure within the clutch circuit
• Accommodating drivetrain movement through its flexible hose section
• Preventing hydraulic fluid loss when the system is correctly sealed
• Maintaining the original Porsche hydraulic clutch layout

Correct operation of this line is essential for consistent clutch-pedal feel and reliable manual gear selection.

Symptoms Of Wear Or Failure:
A hydraulic clutch tube or hose can deteriorate through heat, age, vibration, corrosion or physical damage.

Possible symptoms include:

• Hydraulic fluid leaking from the clutch line
• Dampness around pipe or hose connections
• Visible fluid residue on the line
• Cracked or deteriorated flexible hose material
• Corrosion on rigid pipe sections
• Damaged or kinked pipework
• Bulging hose sections
• Loose or damaged fittings
• Soft or spongy clutch pedal
• Clutch pedal travelling farther than normal
• Clutch pedal slowly sinking
• Clutch pedal failing to return correctly
• Difficulty selecting gears
• Difficulty engaging first or reverse gear
• Gear grinding during selection
• Clutch dragging when the pedal is fully depressed
• Changing clutch engagement point
• Loss of clutch hydraulic pressure

A soft clutch pedal can also result from a failing master cylinder, slave cylinder or air elsewhere in the hydraulic circuit, so the complete system should be inspected.

Why Replacement Matters:
A damaged clutch line can lead to progressive pressure loss and eventually prevent the clutch from disengaging.

Continued use with a deteriorating line can result in:

• Increasing difficulty changing gear
• Clutch drag
• Gear grinding
• Increased wear on gearbox synchronisers
• Loss of clutch-pedal function
• Complete hydraulic failure
• Vehicle becoming difficult or impossible to drive
• Unexpected breakdown

Replacing a leaking or damaged hydraulic line restores the sealed pressure path required for correct clutch operation.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

982721387A

The product you are viewing cross references to these numbers

Oil Pump Chain Guide Rail. 
The Genuine Porsche Oil Pump Chain Guide Rail 9A110523702 is a replacement guide rail for the chain-driven engine oil pump used on selected Porsche 911, Boxster and Cayman models equipped with the 9A1-family engine.

Fits:

• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• Porsche 997 MKII Carrera C2 3.6L 2009-12
• Porsche 997 MKII Carrera C4 3.6L 2009-12
• Porsche 997 MKII Carrera C2S 3.8L 2009-12
• Porsche 997 MKII Carrera C4S 3.8L 2009-12
• Porsche 997 MKII Turbo 2010-13
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Diagram Ref No 13

The engine oil pump is mechanically driven from the crankshaft by a dedicated chain. This guide rail provides a controlled running surface for that chain, helping keep it correctly positioned as it travels between the crankshaft drive and oil pump sprocket.

Although the guide rail is a relatively small component, it performs an important role in the engine lubrication system.

The oil pump must rotate reliably whenever the engine is running so that engine oil can be circulated under pressure to critical internal components.

If the guide rail becomes excessively worn, cracked or damaged, the oil-pump chain may no longer run as smoothly or securely as intended. This can contribute to chain noise, abnormal chain movement, accelerated chain or sprocket wear and, in severe cases, disruption of the oil-pump drive.

Replacing a damaged guide rail helps restore the correct oil-pump chain path and supports reliable engine lubrication.

What This Product Does:
The Oil Pump Chain Guide Rail provides a smooth, accurately positioned running surface for the oil-pump drive chain.

Its main functions are to:

• Guide the oil-pump drive chain.
• Maintain correct chain alignment.
• Control chain movement.
• Reduce unwanted chain vibration.
• Prevent excessive chain whip.
• Help maintain correct engagement with the drive sprockets.
• Work with the oil-pump chain tensioner.
• Support reliable oil-pump operation.
• Reduce abnormal chain and sprocket wear.
• Replace a cracked, worn or damaged original guide.

Symptoms Of Wear Or Failure:
Possible symptoms or inspection findings can include:

• Chain rattling from the engine.
• Mechanical rattling at start-up.
• Persistent chain noise.
• Abnormal noise increasing with engine speed.
• Excessive oil-pump chain movement.
• Visible wear grooves in the guide.
• Cracked guide material.
• Broken guide sections.
• Missing guide material.
• Debris found in the engine oil or sump.
• Abnormal oil-pump chain wear.
• Chain alignment problems.
• Damaged oil-pump sprocket teeth.
• Low oil-pressure warning in severe drive-system failure.

Many of these symptoms can also originate from other engine components, so diagnosis is essential.

Why Replacement Matters:
Replacing a worn or damaged Oil Pump Chain Guide Rail helps restore:

• Correct chain alignment.
• Controlled oil-pump chain movement.
• Proper chain tracking.
• Reduced chain vibration.
• Reliable sprocket engagement.
• Smooth oil-pump drive.
• Long-term lubrication-system reliability.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9A110523702

The product you are viewing cross references to these numbers

Coolant Hose, Complete.

The Genuine Porsche Coolant Hose, Complete (95810631022) is an original equipment cooling system replacement component designed for selected Porsche Cayenne 958 models equipped with the 3.0-litre hybrid powertrain.

Fits:

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17  

Diagram Ref No 7

Also referred to as a complete water hose or water radiator hose assembly, this component forms part of the vehicle's engine cooling system, carrying coolant between its designated connection points.

The Porsche Cayenne uses a carefully engineered liquid cooling system to regulate operating temperatures and protect the engine during a wide range of driving conditions.

During operation, coolant circulates through the engine and associated cooling system components, absorbing heat and transferring it towards the appropriate heat exchangers.

For the cooling system to perform correctly, coolant must remain contained within a sealed circuit and flow through the correct hoses and passages.

The Porsche complete coolant hose 95810631022 provides one of these connections within the Cayenne's original cooling system arrangement.

Its construction and connection layout are intended to match the relevant factory cooling system specification.

This is important because different Porsche Cayenne engines and production years use different hose configurations.

The coolant hose is continually exposed to high operating temperatures, pressure changes, engine vibration and coolant chemicals.

Over time, these conditions can cause the hose material or its connections to deteriorate.

Ageing hoses may become hard, brittle, swollen or weakened, while damaged connections can allow coolant to escape.

A coolant leak may initially appear as minor dampness around the hose, but continued deterioration can lead to greater coolant loss and potentially compromise engine cooling.

If the cooling system loses too much coolant, the engine may begin to run at an abnormally high temperature.

Severe overheating can damage engine seals, cylinder heads and other internal components.

Replacing a worn or leaking hose with Genuine Porsche part number 95810631022 helps restore the original coolant connection, maintain system integrity and support dependable engine temperature regulation.

This complete hose assembly is particularly suitable for coolant leak repairs, cooling system refurbishment and replacement of deteriorated original pipework.

As a Genuine Porsche part, it provides the specified original equipment replacement for compatible Cayenne cooling system configurations.

What This Product Does:
The coolant hose provides a dedicated passage for coolant circulation within the Porsche Cayenne engine cooling system.

Its main functions include:

• Transfers Engine Coolant: Carries coolant between the relevant cooling system components.
• Maintains Coolant Circulation: Supports uninterrupted flow through the designated cooling circuit.
• Provides a Sealed Connection: Helps prevent coolant escaping from the system.
• Supports Cooling System Pressure: Maintains the integrity of the pressurised coolant circuit.
• Helps Regulate Engine Temperature: Allows coolant to participate in the engine's heat-management process.
• Supports Heat Transfer: Helps coolant circulate through the system so heat can be absorbed and dissipated.
• Maintains Factory Coolant Routing: Preserves the original hose layout and connection positions.
• Accommodates Engine Movement: Provides a suitable connection within an environment exposed to vibration and thermal movement.
• Supports Engine Reliability: Helps prevent coolant loss that could interfere with cooling performance.
• Restores Original Equipment Fitment: Replaces worn or damaged factory coolant pipework.

Symptoms Of Wear Or Failure:
Coolant hoses are subject to repeated heating, cooling, expansion and contraction.

Age, mileage and environmental conditions can gradually affect the hose and its connections.

Typical symptoms:

• Wetness around the hose.
• Coolant dripping from a connection.
• Fluid collecting beneath the vehicle.
• Dried coolant residue around the hose ends.
• Coolant staining on nearby components.
• Leaks becoming more noticeable when the engine is hot.
• Low coolant warning on the dashboard.
• Expansion tank level falling below the recommended mark.
• Repeated need to top up coolant.
• Cooling system warnings after longer journeys.
• Sweet odour after driving.
• Coolant smell around the front of the vehicle.
• Smell becoming stronger when the engine is warm.
• Coolant residue on nearby engine components.

Why Replacement Matters:
The coolant hose plays an essential supporting role in the vehicle's engine cooling system.

Although it is a relatively simple component, a failed hose can cause significant coolant loss and potentially lead to serious engine damage.

Replacing a defective hose helps restore the system's ability to retain coolant and maintain the intended circulation path.

• Prevents Coolant Leaks: Restores a sealed connection where the original hose is leaking.
• Maintains Correct Coolant Circulation: Preserves the factory coolant routing.
• Supports Stable Engine Temperatures: Helps ensure the cooling system can operate as designed.
• Restores Pressure Integrity: Helps maintain the correct sealed cooling circuit.
• Reduces Overheating Risk: Addresses hose-related coolant loss before it becomes severe.
• Protects Engine Components: Helps prevent damage associated with inadequate cooling.
• Reduces Unplanned Breakdowns: Replaces a deteriorated component before complete failure.
• Supports Cooling System Reliability: Maintains a dependable connection between cooling components.
• Restores Factory Fitment: Uses the original Porsche hose configuration for compatible vehicles.
• Suitable for Preventative Maintenance: Allows replacement of an ageing or weakened hose during other cooling system repairs.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

95810631022

The product you are viewing cross references to these numbers

Coolant Breather Line. 

The Genuine Porsche Coolant Breather Line (PAB121455A) is an original equipment replacement component designed for the engine cooling system of selected third-generation Porsche Cayenne 9YA models equipped with the 4.0-litre V8 engine.

Fits:

• Porsche 9YA Cayenne GTS V8 4.0L Petrol (460Hp) 2020-23
• Porsche 9YA Cayenne Coupe GTS V8 4.0L Petrol (460Hp) 2021-23
• Porsche 9YA Cayenne Turbo V8 4.0L Petrol (550Hp) 2020-23
• Porsche 9YA Cayenne Coupe Turbo V8 4.0L Petrol (550Hp) 2019-23  

Diagram Ref No 14

Also known as a coolant vent pipe or breather tube, this component forms part of the cooling system's air-bleeding and coolant circulation arrangement.

The Porsche Cayenne V8 engine produces substantial heat during operation, making effective temperature regulation essential for performance, reliability and engine protection.

Its liquid cooling system circulates coolant through the engine, radiator and associated heat exchangers to absorb and dissipate heat.

For this system to operate correctly, coolant must circulate through the intended passages without excessive air accumulation.

Air trapped within the cooling circuit can interfere with coolant flow, reduce heat transfer and contribute to fluctuating engine temperatures.

The coolant breather line PAB121455A provides a dedicated flow path within the engine cooling system, helping manage trapped air and coolant movement through the corresponding venting circuit.

Its design is specific to the compatible Cayenne V8 cooling system arrangement.

During operation, coolant hoses and pipes are exposed to repeated temperature changes, system pressure, vibration and the chemical properties of engine coolant.

Over time, these conditions can contribute to cracks, damaged connections, deterioration of sealing surfaces or leaks.

If a coolant breather line becomes damaged, the cooling system may lose coolant or admit air during cooling cycles.

This can compromise the system's ability to remain correctly filled and bled, potentially contributing to reduced cooling efficiency.

The Genuine Porsche replacement PAB121455A is designed to restore the original breather connection and maintain the factory cooling system configuration.

It is particularly suitable for cooling system repairs, water pump servicing, investigation of coolant leaks and replacement of damaged coolant ventilation pipework.

As an original equipment component, it provides the intended connection layout for the applicable Porsche engine specification.

What This Product Does:
The coolant breather line forms part of the engine cooling system's ventilation and coolant routing arrangement.

Its main functions include:

• Helps Remove Trapped Air: Provides a route for air and coolant movement through the designated breather circuit.
• Supports Correct System Bleeding: Helps maintain the intended cooling system ventilation pathway.
• Maintains Coolant Circuit Integrity: Connects the specified cooling system components.
• Helps Prevent Airlocks: Supports the movement of trapped air away from areas where it could interfere with cooling.
• Supports Efficient Cooling: Helps the cooling system maintain consistent coolant circulation.
• Maintains System Pressure Integrity: Provides a sealed connection within the pressurised cooling circuit.
• Helps Prevent Coolant Loss: A correctly installed, undamaged line prevents leakage from its own connections and pipework.
• Supports Stable Engine Temperatures: Contributes to correct cooling system operation.
• Preserves Original Routing: Maintains the factory cooling system layout.

Symptoms Of Wear Or Failure:
Coolant breather lines operate in a demanding environment involving heat, pressure and vibration.

Although they are not normally replaced at fixed service intervals, damage or deterioration can develop over time.

Typical symptoms:

• Wet areas around the breather line.
• Coolant dripping from nearby pipe connections.
• Coolant stains or residue.
• Fluid accumulating beneath the vehicle.
• Repeated coolant loss.
  
• Low coolant warning message.
• Coolant expansion tank level dropping.
• Frequent top-ups.
• Cooling system warnings appearing after driving.
• Coolant odour from the engine compartment.
• Smell becoming stronger after driving.
• Visible residue near the affected hose or pipe.

Why Replacement Matters:
A properly functioning coolant breather line helps preserve the integrity of the engine cooling system.

Replacing a damaged component is important for preventing coolant loss, maintaining correct venting and protecting the engine from overheating.

• Helps Prevent Coolant Loss: Restores a sealed connection where the original line is leaking.
• Maintains Cooling System Ventilation: Preserves the intended breather route.
• Helps Prevent Air Pockets: Supports correct removal and management of trapped air.
• Supports Stable Engine Temperatures: Helps maintain effective cooling system operation.
• Restores System Pressure Integrity: Replaces damaged pipework or connections.
• Reduces Overheating Risk: Addresses faults that can interfere with coolant circulation or system filling.
• Protects Engine Components: Helps reduce the risk of damage associated with coolant loss and overheating.
• Supports Long-Term Reliability: Maintains an important part of the V8 cooling circuit.
• Suitable for Cooling System Repairs: Ideal when replacing damaged pipework during water pump or coolant system maintenance.
• Genuine Porsche Replacement: Preserves the original manufacturer specification.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

PAB121455A

The product you are viewing cross references to these numbers

Splash Guard.

The Genuine Porsche Splash Guards 99757231101 and 99757231202 are protective body components used within the rear side-section and sill area of selected Porsche 911 997 models.

Fits:

• Porsche 997 MK1 Carrera 2 3.6L 2005-08
• Porsche 997 MK1 Carrera 2S 3.8L 2005-08
• Porsche 997 MK1 Carrera 4 3.6L 2005-08
• Porsche 997 MK1 Carrera 4S 3.8L 2005-08
• Porsche 997 MK1 TURBO 2007-09
• Porsche 997 MK1 GT3 / GT3 RS 2007-09
• Porsche 997 MK1 GT2 2007-09
• Porsche 997 MKII Carrera C2 3.6L 2009-12
• Porsche 997 MKII Carrera C4 3.6L 2009-12
• Porsche 997 MKII Carrera C2S 3.8L 2009-12
• Porsche 997 MKII Carrera C4S 3.8L 2009-12
• Porsche 997 MKII GT3 / GT3 RS 2010-11
• Porsche 997 MKII Turbo 2010-13
• Porsche 997 MKII GT2 RS 2011-13  

Diagram Ref No 11

Although commonly described as splash guards, these components should not be confused with the larger plastic wheel-arch liners normally fitted directly around the tyres.

Porsche parts catalogues position these components within the outer side-body and rear-quarter structure and describe them as:

Water protection

and, in later specialist catalogues:

Drain valve / forced ventilation trim.

Their role is to help protect the body ventilation and drainage area from direct water spray, dirt and road contamination while allowing the vehicle's intended body-cavity ventilation and drainage arrangement to function correctly.

The left and right guards sit within the side-body structure close to the rear quarter and sill area, where they help reduce the amount of spray and debris entering sensitive body cavities.

Over time, the original components can become cracked, brittle, distorted, loose or lost during body repairs. A damaged or missing guard can leave the surrounding cavity more exposed to water, mud and debris and may interfere with the intended drainage or forced-ventilation arrangement.

Replacing deteriorated guards helps restore the original Porsche body protection and ventilation configuration.

What This Product Does:
The Splash Guard / Water Protection component forms part of the Porsche 997 rear side-body protection and ventilation system.

Its main functions are to:

• Help shield the rear side-body cavity from water spray.
• Help prevent road dirt and debris entering the protected area.
• Protect the forced-ventilation opening.
• Support the intended body-cavity ventilation arrangement.
• Work alongside the sill water-drain system.
• Help direct moisture away from internal body sections.
• Reduce direct exposure of body cavities to road contamination.
• Restore the correct factory arrangement after body repair.
• Replace cracked, missing or distorted original guards.

Symptoms Of Wear Or Failure:
Typical symptoms or inspection findings include:

• Guard completely missing.
• Cracked plastic.
• Split edges.
• Broken mounting points.
• Distorted shape.
• Guard sitting loose.
• Rattling from the side-body area.
• Road debris accumulating around the ventilation opening.
• Increased dirt inside the rear side cavity.
• Water staining around the surrounding bodywork.
• Dampness within the associated cavity.
• Previous accident or body repair leaving the guard incorrectly fitted.
• Damaged clips or fixings.
• Guard no longer sitting flush.

Why Replacement Matters:
Replacing a damaged or missing Splash Guard helps restore:

• Correct water protection.
• Protection of the forced-ventilation area.
• Reduced dirt and debris intrusion.
• Proper body drainage arrangement.
• Original body-cavity configuration.
• Secure trim installation.
• Factory-standard appearance and function.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99757231

The product you are viewing cross references to these numbers

Door window slot seal
Genuine Porsche door window slot seal for Porsche 964 Speedster models. This original Porsche window sealing strip fits along the door window slot area, helping seal the glass-to-door opening and maintain the correct factory exterior finish.

Fits:
Porsche 964 Speedster 1993 - 1994

Diagram ref no

These seals are used at the door window opening where the glass passes into the door.

What This Part Does / Functions
•  Seals the door window slot area
•  Helps reduce water, dirt and debris entering the door cavity
•  Provides a clean finished edge along the door glass opening
•  Helps support correct window-to-door sealing
•  Replaces cracked, perished, shrunken or damaged original seals
•  Helps reduce wind noise and water ingress around the door glass
•  Provides correct Genuine Porsche profile and fitment
•  Supports factory-correct restoration of the 964 Speedster door assembly.

Why Replace This Part?
Door window slot seals are exposed to sunlight, rain, temperature changes, dirt, window movement and age-related rubber deterioration. Over time, the rubber can harden, crack, shrink, split or lose its sealing edge. A worn seal may allow water and debris into the door cavity or make the exterior door trim look aged and unfinished.

Replacing the seal with a Genuine Porsche door window slot seal helps restore the correct factory appearance and weather protection around the door glass.

Common Symptoms of a Worn Window Slot Seal
•   Cracked, hardened or perished rubber
•   Shrinking or lifting at the seal ends
•   Water entering the door cavity
•   Dirt or debris collecting inside the door
•   Poor window sealing
•   Wind noise around the door glass
•   Seal damaged during door or glass repair
•   Exterior door trim looking worn or incomplete

When to Replace This Part
•   During door glass or window regulator service
•   During door seal replacement or body restoration
•   If the original seal is cracked, brittle, split or missing
•   If water ingress is found around the door window slot
•   When repainting or rebuilding the door
•   During Porsche 964 Speedster restoration
•   If the seal no longer sits correctly against the glass.

Where It Fits on the Car
This seal fits along the door window slot / outer door glass opening on the Porsche 964 Speedster. It sits at the base of the side window where the glass lowers into the door.

Correct alignment is important to ensure the seal follows the window opening cleanly and sits flush against the glass and door.

Related reference numbers
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9645312

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Ski Holder Clamping Bow.

Fits:

• Porsche 928 4.5L 1978-82
• Porsche 928S 4.7L 1981-83
• Porsche 928S2 4.7L 1984-86
• Porsche 928S4 5.0L 1987-92
• Porsche 928GT 5.0L 1989-91
• Porsche 928GTS 5.4L 1992-95

What This Product Does

The holder forms part of the equipment used to carry skis on a compatible roof transport system

Technical Details

• Brand: Porsche.
• Part number: 00004400004.
• Product type: ski holder.

Symptoms of Fault

Check the carrier assembly for worn gripping surfaces, seized mechanisms and loose or rattling fittings. Establish which component is damaged before selecting a replacement.

Why Replacement Matters

Renewing a worn or damaged holder addresses deterioration in the ski-carrying assembly. Inspect the associated fittings as well, rather than assuming that replacing one component will resolve every issue.

FAQs

Will it fit any Porsche roof rack?
Compatibility should be checked using part number 00004400004, the vehicle details and the installed roof transport system.

What is its carrying capacity?
A ski quantity or weight limit has not been supplied for this component. Consult the instructions for the complete carrier and roof system.

Check fitment for your specific vehicle (model, year, engine) before ordering.

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00004400004

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Breather Line.

The Porsche Breather Line 9GT301047A is a genuine Porsche replacement ventilation line used within the PDK transmission and clutch breather system on selected Porsche 911 GT3 applications.
Fits:

• Porsche 992.1 GT3 4.0L / 992 S/T 4.0L 2021-24
• Porsche 992.1 GT3 RS 4.0L 2022-24  

Diagram Ref No 34

The line forms part of the gearbox ventilation arrangement, providing a controlled route for pressure equalisation as the transmission and clutch assembly heat up and cool down during operation.

Porsche catalogues the part for the 7-speed PDK transmission code CBG.91, where it is fitted as a single breather line within the transmission assembly.

Manufactured as a genuine Porsche component, it provides the correct dimensions, connections and routing for the original installation.
What This Product Does:
During operation, transmission components and lubricants become hot.

As temperature increases, the air and vapour inside the transmission housing expand. A properly functioning breather system allows these pressure changes to be managed without excessive internal pressure building inside the gearbox.

The breather line helps:

• Vent the PDK transmission and clutch housing correctly
• Allow internal pressure to equalise as temperatures change
• Route gearbox vapour through the intended ventilation path
• Prevent excessive pressure building inside the transmission
• Support correct operation of gearbox seals and gaskets
• Reduce the likelihood of oil being forced past sealing surfaces
• Maintain the original Porsche gearbox ventilation arrangement

Although it does not directly control gear selection or clutch engagement, it supports the environment in which these components operate.
Symptoms Of Wear Or Failure:
Breather lines can deteriorate through heat, vibration, age or physical damage.

Possible symptoms include:

• Visible cracking or splitting
• Hardened or brittle hose material
• Kinked or crushed tubing
• Loose connections
• Line becoming detached
• Oil mist around the breather connection
• Transmission oil residue around the gearbox
• Dampness around adjacent fittings
• Unusual oil seepage from gearbox seals
• Repeated transmission oil leaks with no obvious seal failure
• Contamination or debris blocking the breather line
• Damaged retaining clips or supports

Because this is a passive ventilation component, a failed line may not immediately trigger a dashboard warning.
Why Replacement Matters:
A damaged, disconnected or blocked breather line can interfere with the transmission's ability to manage internal pressure.

Continued operation with a defective breather may contribute to:

• Increased gearbox oil leakage
• Additional stress on transmission seals
• Oil contamination around surrounding components
• Loss of transmission lubricant
• Dirt or moisture entering the breather system
• Premature deterioration of associated seals
• Increased maintenance requirements

Replacing a failed line restores the intended ventilation route and helps maintain the transmission's designed operating environment.

Related reference numbers
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9GT301047A

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Oil Hose.

The Porsche Oil Hose 99320725301 is a genuine replacement oil-system hose designed for Porsche 993 models.

Fits:

• Porsche 993 (911) C2 1994-97
• Porsche 993 (911) C4 1994-97
• Porsche 993 (911) RS 1994-97
• Porsche 993 (911) C2S 1994-97
• Porsche 993 (911) C4S 1994-97
• Porsche 993 (911) TURBO 1994-96
• Porsche 993 (911) GT2 1994-97
• Porsche 993 (911) TURBO S 1994-97 

 
Diagram Ref No 48

The hose forms part of the engine oil circulation and cooling system, providing a secure route for engine oil between associated pipes and oil-system components.

Because the air-cooled Porsche 993 relies heavily on engine oil for both lubrication and heat management, maintaining leak-free oil hoses is especially important.

This genuine Porsche replacement is suitable for renewing an original hose that has become hardened, cracked, oil-soaked, damaged or is beginning to leak.

What This Product Does:
Engine oil performs several critical functions within the Porsche 993, including lubrication, cleaning and heat removal.

The oil hose forms part of the circuit that allows oil to circulate between the engine and associated oil-system components.

Its main functions include:

• Carrying engine oil through the lubrication and cooling circuit
• Maintaining a sealed oil connection
• Supporting reliable engine oil circulation
• Helping maintain correct oil pressure and flow
• Supporting engine lubrication
• Helping transfer heat away from internal engine components
• Preventing oil loss when correctly sealed
• Maintaining the original factory oil-system routing

The hose itself does not generate oil pressure, but it must remain unrestricted and leak-free for the oil system to operate correctly.

Symptoms Of Wear Or Failure:
Oil hoses deteriorate over time due to heat, oil exposure, vibration and repeated thermal cycling.

Common signs that replacement may be required include:

• Visible engine oil leakage
• Wet or oily deposits around the hose
• Oil seepage around hose connections
• Cracks or splits in the hose material
• Rubber becoming hard or brittle
• Hose becoming swollen or unusually soft
• Deterioration of the outer surface
• Corroded or damaged hose fittings
• Falling engine oil level
• Oil stains beneath the vehicle
• Burning-oil smell after driving
• Smoke if leaking oil reaches hot exhaust components
• Oil contamination around surrounding engine components

A falling oil level can also originate elsewhere in the engine, so the complete lubrication system should be inspected when a leak is found.

Why Replacement Matters:
Reliable oil circulation is essential to the longevity of the Porsche 993's air-cooled engine.

If an oil hose begins to leak, the engine can gradually lose oil. Even a relatively small leak may eventually reduce the oil level enough to compromise lubrication and cooling.

More significant oil loss can contribute to:

• Reduced engine lubrication
• Increased friction and wear
• Higher operating temperatures
• Reduced oil pressure
• Bearing or internal engine damage
• Breakdown caused by severe oil loss

Leaking oil may also reach hot exhaust or engine components, producing smoke and creating an increased fire risk.

Replacing a deteriorated oil hose helps restore:

• A sealed engine oil circuit
• Reliable oil circulation
• Correct oil-system integrity
• Reduced risk of oil loss
• Effective engine lubrication
• Reliable heat management

On an air-cooled Porsche, maintaining the oil circuit is particularly important because engine oil plays a major role in controlling operating temperature as well as lubricating internal components.

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99320725301

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Clutch Power Spring.

The Genuine Porsche Clutch Power Spring is a replacement clutch pedal assistance spring designed for early Porsche Boxster 986 manual-transmission models.
Fits:

• Porsche Boxster 986 2.5L 1997-99
• Porsche Boxster 986 2.7L 1999-02
• Porsche Boxster S 986 3.2L 1999-02
• Porsche Boxster 986 2.7L 2003-04
• Porsche Boxster S 986 3.2L 2003-04  

Diagram Ref No 9

Installed within the driver-side pedal assembly, the spring assists the movement of the clutch pedal as it is pressed and released. It helps provide the characteristic factory pedal effort and contributes to smooth, consistent clutch pedal operation.

The component is sometimes referred to as a clutch pedal power spring, servo spring, boost spring or clutch assist spring. It is part of the pedal mechanism rather than the clutch assembly inside the transmission bellhousing.

Over time, the spring and its associated mounting points can wear, become noisy, lose tension or suffer mechanical damage. A faulty power spring can make the clutch pedal feel heavier, inconsistent or rough and may cause squeaking or scraping noises during pedal movement.
What This Product Does:
The clutch power spring assists movement of the clutch pedal throughout its operating range.

It is designed to:

• Assist clutch pedal movement.
• Help reduce excessive pedal effort.
• Provide the intended factory clutch pedal feel.
• Support smooth pedal travel.
• Assist the pedal during clutch engagement and disengagement.
• Help the pedal return predictably.
• Work with the clutch pedal and hydraulic clutch-control system.
• Replace a worn, noisy, damaged or missing original spring.
• Maintain consistent clutch control during normal driving.

The spring does not operate the clutch by itself. The driver still moves the clutch pedal, which operates the clutch master cylinder and hydraulic release system. The power spring modifies and assists the force required at the pedal.
Symptoms Of Wear Or Failure:
Possible symptoms include:

• Clutch pedal feeling unusually heavy.
• Pedal effort changing through its travel.
• Clutch pedal feeling inconsistent.
• Squeaking when pressing or releasing the pedal.
• Scraping noises from the pedal area.
• Clicking or creaking from the driver footwell.
• Pedal movement becoming rough or notchy.
• Pedal returning less smoothly than normal.
• Excessive free movement around the spring mechanism.
• Spring visibly cracked or broken.
• Spring becoming detached from its mounting.
• Damage to the spring casing or mounting points.
• Clutch pedal feel changing suddenly.
• Pedal requiring greater effort than previously.

Similar symptoms can also be caused by the clutch master cylinder, pedal bushes, hydraulic system or clutch release components, so the complete clutch-control system should be inspected.
Why Replacement Matters:
The power spring contributes directly to clutch pedal feel and driver control.

A worn or broken spring may increase pedal effort or make the pedal movement inconsistent, particularly during repeated clutch operation in traffic.

Replacing a defective spring helps restore:

• Correct clutch pedal assistance.
• More consistent pedal effort.
• Smoother clutch operation.
• Predictable pedal return.
• Reduced pedal-area noise.
• Factory-style clutch pedal feel.
• Easier clutch modulation.

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Windscreen, With Camera Provision.
The Genuine Porsche Windscreen 982845011AP is a replacement front windscreen designed for appropriately equipped Porsche 718 Cayman 982 models using a forward-facing camera installation.

POSTING GLASS & WINDSCREENS
Although we take great care in packaging glass, we cannot offer insurance to cover breakage. Therefore, we advise customers that they purchase glass by mail order at their own risk.

Packing Surcharge
Wind screens and rear screens can be packed for national delivery and export at a charge this is for the card board box with insert and foam fill.

Fits:

• Porsche Cayman 718 2.0L Manual (300 Bhp)
• Porsche Cayman 718 2.0L PDK (300 Bhp)
• Porsche Cayman S 718 2.5L Manual (350 Bhp)
• Porsche Cayman S 718 2.5L PDK (350 Bhp)
• Porsche Cayman T 718 2.0L Manual (300 Bhp)
• Porsche Cayman T 718 2.0L PDK (300 Bhp)
• Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
• Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
• Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
• Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
• Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L  

Diagram Ref No 2

Manufactured to Porsche's original glazing specification, the windscreen provides the driver's primary forward field of vision while also incorporating the correct provision around the upper central area for the applicable camera system.

The glass forms an important structural, visibility and driver-assistance component of the vehicle.

It provides protection from wind, rain, road debris and airborne objects while maintaining a clear and optically correct view of the road ahead.

On camera-equipped vehicles, the exact glass design is particularly important because the forward-facing camera must look through a precisely defined section of the windscreen.

Using the correct camera-compatible windscreen helps maintain the correct camera mounting position, viewing area and optical characteristics required by the vehicle's associated assistance systems.

Replacement is required when the original windscreen is cracked, severely chipped, delaminated, heavily scratched, optically distorted or otherwise damaged beyond safe repair.

What This Product Does:
The Windscreen performs several important functions within the Porsche 718 Cayman.

Its primary functions are to:

• Provide clear forward visibility.
• Protect occupants from wind and weather.
• Protect the cabin from road debris.
• Provide the correct glazing area for the forward-facing camera.
• Support correct camera positioning.
• Maintain the intended optical path for camera-based systems.
• Contribute to the vehicle body's bonded glass structure.
• Support correct sealing of the passenger compartment.
• Reduce wind noise when correctly installed.
• Provide the correct factory tint and upper-screen configuration where specified.
• Replace cracked, chipped or damaged original glass.

Symptoms Of Wear Or Failure:
Common reasons for windscreen replacement include:

• Long cracks.
• Cracks extending from the edge.
• Large stone chips.
• Multiple chips.
• Damage within the driver's line of sight.
• Delamination.
• Clouding around the glass edges.
• Deep scratches.
• Heavy surface pitting.
• Optical distortion.
• Water leakage.
• Wind noise.
• Damaged camera viewing area.
• Camera-system faults following glass damage.
• Damage around the camera mounting provision.

Why Replacement Matters:
Replacing a damaged windscreen helps restore:

• Clear forward visibility.
• Correct optical quality.
• Structural glass integrity.
• Weather sealing.
• Camera viewing quality.
• Factory appearance.
• Reduced glare.
• Reliable camera-system operation.

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982845011AP

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PLEASE NOTE:
Due to its size, weight or fragility, this item requires additional protective packaging to make sure it reaches you undamaged. A small packing surcharge is applied to cover these specialist materials and the extra care taken preparing your order for transit.

Brake Line, Rear Left.

Fits

• Porsche 944 2.5L 8V 1982-86
• Porsche 944 Turbo 2.5L 8V 1985-86

Diagram Ref No 10

Before ordering, verify the vehicle model, production year and engine specification. Use the VIN to confirm suitability where production changes or braking equipment affect the required line.

What This Product Does

Pedal operation produces hydraulic pressure, which the line conveys between connected brake components. Its connections must remain sealed so that fluid stays within the circuit. This product is a brake line, not a replacement master cylinder.

Functions

• Conveys brake fluid under pressure.
• Provides a hydraulic connection between brake components.
• Forms part of the sealed fluid circuit.

Technical Details

• Component: hydraulic brake line.
• Specified side: Left.
• Brand: Porsche; genuine component.
• Part reference: 94435503501.
• Supplied application: Porsche 944, 1985–86; catalogue coverage up to model year 1986.
• Catalogue quantity required: one.

Symptoms of Fault

Inspect the pipe for corrosion, distortion and other damage. Fluid at a union or along the line, a declining reservoir level, or a pedal that feels soft or inconsistent can warrant investigation. These signs do not identify the line as the cause on their own; the surrounding hydraulic components also require assessment.

Why Replacement Matters

Leakage from a deteriorated pipe or connection can allow fluid to escape and reduce retained hydraulic pressure. Renew the line when inspection confirms corrosion, damage or a leak. Follow the applicable workshop instructions for installation, refilling, bleeding and leak checks, and examine nearby hoses, unions, retaining clips and supporting fixings during the repair.

FAQs

Is the part genuine Porsche?
Yes. The supplied information identifies reference 94435503501 as a genuine Porsche component.

Which side is specified?
Left. Confirm the routing and connections against the existing pipe and vehicle-specific parts information.

Is bleeding necessary after replacement?
Yes. Once the circuit has been opened, refill and bleed it according to the relevant workshop procedure, then check the completed connections for leakage.

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Automatic Transmission Oil Cooler.

The Porsche Automatic Transmission Oil Cooler 95530701701 is a genuine replacement gearbox oil cooler designed to help regulate automatic transmission fluid temperature on Porsche Cayenne applications.
Fits:

• Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10

Diagram Ref No 1

The cooler forms part of the Tiptronic transmission cooling system. As automatic transmission fluid circulates through the gearbox, it absorbs heat generated by the torque converter, internal clutches, gears and hydraulic system. The oil cooler removes excess heat from the fluid before it returns to the transmission.

Maintaining the correct ATF temperature is essential for reliable shifting, effective lubrication and long-term transmission durability.

This genuine Porsche replacement is suitable for replacing an original cooler that has become damaged, corroded, restricted or is leaking.

What This Product Does:
Automatic transmission fluid performs several important functions inside the gearbox, including lubrication, hydraulic control, cooling and transmitting force through the torque converter.

During normal driving, and particularly under heavy load, the transmission can generate considerable heat. The transmission oil cooler helps dissipate this heat and keep the ATF within its intended operating temperature range.

Its functions include:

• Cooling automatic transmission fluid
• Removing excess heat generated by the gearbox and torque converter
• Helping maintain a stable transmission operating temperature
• Protecting transmission fluid from excessive thermal degradation
• Supporting consistent hydraulic pressure and gear changes
• Helping protect internal transmission components
• Supporting reliable transmission performance under demanding conditions
• Maintaining efficient circulation through the transmission cooling circuit

The cooler itself does not control gear selection, but correct transmission temperature is important for proper operation of the complete Tiptronic system.
Symptoms Of Wear Or Failure:
Transmission oil coolers can deteriorate because of age, corrosion, impact damage, blocked cooling fins or internal restriction.

Common symptoms that may indicate a faulty or deteriorating transmission oil cooler include:

• Automatic transmission running hotter than normal
• Transmission overheating warnings
• Gear changes becoming harsh or inconsistent when hot
• Delayed engagement of Drive or Reverse
• Transmission performance deteriorating after prolonged driving
• ATF leaking from the cooler or connections
• Red or brown fluid visible beneath the vehicle
• Oily residue around the cooler or transmission cooling lines
• Visible corrosion on the cooler
• Bent or damaged cooling fins
• Physical impact damage
• Restricted airflow through heavily contaminated fins
• Darkened or burnt-smelling transmission fluid
• Transmission entering a protective or reduced-performance mode

Similar symptoms can be caused by low ATF level, damaged cooler pipes, thermostat problems or internal gearbox faults, so the complete transmission cooling circuit should be inspected before replacement.
Why Replacement Matters:

• Automatic transmissions are highly sensitive to excessive operating temperatures. If the oil cooler becomes blocked, damaged or inefficient, the transmission fluid may operate at higher temperatures than intended.
• Excessive heat accelerates ATF degradation and reduces its ability to lubricate, cool and operate the gearbox's hydraulic components effectively. Over time, this can contribute to increased wear of seals, clutches, bearings and other internal transmission components.
• A leaking cooler can also cause the ATF level to fall. Insufficient transmission fluid can lead to poor lubrication, hydraulic pressure problems, abnormal shifting and potentially serious gearbox damage.
• Replacing a damaged or restricted cooler helps restore effective heat dissipation and allows the transmission to operate within its intended temperature range. It can also help protect a considerably more expensive gearbox from damage caused by prolonged overheating or low fluid levels.
• Whenever the cooler is replaced, the associated transmission cooler lines, connections, seals and ATF condition should also be inspected.

Related reference numbers
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95530701701

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Coolant Hose With Check Valve. 

The Genuine Porsche Coolant Hose with Check Valve (95510630700) is an original equipment cooling system component designed for selected Porsche Cayenne models.

Fits:

• Porsche 957 Cayenne 3.0L Diesel 2007-10
• Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-11

Diagram Ref No 32

Combining a coolant hose with an integrated one-way check valve, this assembly helps maintain the intended direction of coolant flow within its designated cooling circuit.

The Porsche Cayenne uses a sophisticated liquid cooling system to regulate engine operating temperatures and support the performance and reliability of its powertrain.

During engine operation, coolant circulates through various passages, hoses, heat exchangers and cooling components, carrying heat away from the engine.

For the cooling system to function correctly, the coolant must travel through the appropriate circuits under the intended operating conditions.

Some cooling system branches incorporate non-return valves to prevent unwanted reverse circulation.

The Porsche Coolant Hose with Check Valve 95510630700 provides this function within the corresponding original equipment arrangement.

The integrated valve is designed to permit coolant movement in its specified direction while restricting flow in the opposite direction.

This helps maintain the intended circulation pattern within the associated coolant circuit.

Unlike a conventional hose that simply connects two cooling system components, this assembly also performs a directional flow-control function.

The combination of hose and valve makes correct component selection particularly important.

A damaged hose may allow coolant to escape, while a faulty check valve may interfere with the intended coolant flow.

Over time, exposure to hot coolant, changing system pressures, vibration and thermal cycling can cause deterioration of hose material, connectors or internal valve components.

A worn hose may develop cracks, splits, swelling or leaks.

Similarly, the integrated check valve may become stuck, restricted or unable to prevent reverse flow effectively.

Such faults can affect the operation of the relevant cooling circuit, depending on the valve's installation location and the vehicle's cooling system configuration.

Replacing a confirmed defective assembly with Genuine Porsche part number 95510630700 helps restore the intended hose connection and non-return valve function.

This component is particularly useful during cooling system maintenance, diagnosis of unexplained coolant circulation problems and repairs involving damaged coolant pipework.

As a Genuine Porsche part, it is designed to provide the appropriate original equipment configuration for compatible vehicles.

What This Product Does:
The coolant hose with check valve performs two related functions: carrying coolant through the designated system branch and controlling the direction of flow.

Its primary functions include:

• Transfers Coolant: Provides a passage between the corresponding cooling system components.
• Controls Flow Direction: Uses an integrated check valve to permit flow in the intended direction.
• Prevents Reverse Flow: Restricts unwanted coolant movement in the opposite direction.
• Maintains Coolant Circuit Integrity: Provides a sealed connection within the cooling system.
• Supports Correct Circulation: Helps coolant follow the original Porsche cooling system arrangement.
• Maintains System Pressure Integrity: Helps prevent coolant loss at the hose and valve connections.
• Supports Engine Temperature Management: Contributes to correct operation of the associated cooling circuit.
• Reduces Unwanted Backflow: Helps prevent reverse circulation when pressure conditions change.
• Restores Original Equipment Function: Replaces damaged pipework or a defective non-return valve.
• Maintains Factory Cooling System Routing: Preserves the original installation and connection arrangement.

Symptoms Of Wear Or Failure:
Coolant hoses and non-return valves operate under demanding conditions involving heat, pressure, vibration and continuous contact with engine coolant.

Although the assembly does not normally have a fixed replacement interval, deterioration may eventually require replacement.

Typical symptoms:

• Wetness around the hose.
• Coolant dripping from connections.
• Coloured or crystalline coolant residue.
• Fluid beneath the vehicle.
• Repeated coolant loss.
• Low coolant warning on the instrument display.
• Coolant expansion tank requiring frequent top-ups.
• Cooling system warnings appearing after driving.
• Visible loss of coolant during pressure testing.
• Surface cracking.
• Splits near connection points.
• Hardened or brittle material.
• Visible damage around hose bends.
• Leakage when the system is pressurised.

Why Replacement Matters:
Replacing a damaged coolant hose with check valve helps restore the intended coolant circulation and sealing arrangement.

Because the assembly includes a one-way valve, replacement is important for both preventing leaks and maintaining the designed coolant flow direction.

• Restores Correct Coolant Flow Direction: Re-establishes the integrated non-return valve function.
• Helps Prevent Coolant Leaks: Replaces cracked, split or damaged hose sections.
• Maintains Cooling Circuit Integrity: Restores the original sealed connection.
• Supports Stable Cooling System Operation: Helps preserve the intended circulation pattern.
• Prevents Unwanted Backflow: Restores directional flow control within the relevant circuit.
• Reduces Risk of Coolant Loss: Addresses leaks before they lead to more serious problems.
• Supports Engine Reliability: Helps maintain the cooling system's intended operation.
• Reduces Overheating Risk: Addresses defects that may contribute to reduced coolant circulation or loss.
• Preserves Factory Specification: Maintains the original hose and valve configuration.
• Genuine Porsche Replacement: Provides the original equipment component for compatible vehicles.

Related reference numbers
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95510630700

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