Porsche

Timing Chain For Camshaft / Crankshaft.
The PORSCHE Timing Chain For Camshaft / Crankshaft 0PB109252C is a genuine Porsche internal engine timing component designed to maintain the precise mechanical relationship between the crankshaft and camshaft timing system.
Sold Each.
x2 Required Per Engine.

Fits:

• Porsche 991.1 R 4.0L (500 Bhp) 2016
• Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
• Porsche 991.2 Speedster 4.0L (510Bhp) 2019
• Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19  

Diagram Ref No 1

The timing chain transfers rotational drive from the crankshaft through the timing mechanism so that camshaft operation remains correctly synchronised with piston movement. This precise relationship allows the intake and exhaust valves to operate at the correct points during the engine's combustion cycle.

Timing chains are designed for extended service life, but continuous mechanical loading, friction, heat and lubrication conditions can gradually cause wear. Chain elongation, worn guides, defective tensioners or damaged sprockets can create excessive slack and affect timing accuracy.

If deterioration becomes severe enough for the chain to jump, derail or fail, incorrect valve timing and potentially serious internal engine damage can result.

What This Product Does:
The camshaft/crankshaft timing chain provides the mechanical connection required to keep crankshaft rotation and camshaft operation correctly synchronised.

As the crankshaft rotates, the timing drive transfers this movement to the camshaft timing system.

This helps maintain:

• Correct crankshaft-to-camshaft synchronisation
• Accurate valve timing
• Correct intake valve operation
• Correct exhaust valve operation
• Reliable mechanical timing
• Smooth combustion
• Stable engine operation
• Consistent power delivery

Correct timing-chain tension and accurate engagement with the associated sprockets are essential for maintaining this relationship.

Symptoms Of Wear Or Failure:
Possible symptoms of timing-chain or associated timing-system deterioration include:

• Metallic rattling or clattering from the timing area
• Timing-chain rattle during cold starts
• Noise immediately after engine start-up
• Excessive chain slack
• Timing-chain elongation
• Mechanical noise that changes with engine RPM
• Rough or irregular engine operation
• Unstable idle
• Difficult or extended starting
• Reduced engine performance
• Poor throttle response
• Misfires
• Engine warning light
• Timing-related diagnostic fault codes
• Camshaft-position faults
• Crankshaft-position faults
• Crankshaft/camshaft correlation faults
• Variable camshaft timing faults where applicable
• Visible chain wear during inspection
• Worn or broken timing-chain guides
• Excessive tensioner travel
• Abnormal sprocket wear
• Metal or plastic debris in the engine oil or filter

These symptoms can also be caused by guides, tensioners, sprockets, variable timing components, sensors or lubrication problems. Proper diagnosis is therefore important before individual components are replaced.

Why Replacement Matters:
The Timing Chain is a critical component within the engine timing system.

Replacing a confirmed worn, elongated or damaged chain can help:

• Restore accurate crankshaft/camshaft synchronisation
• Maintain correct valve timing
• Restore dependable mechanical timing
• Reduce excessive chain slack
• Reduce abnormal timing-chain noise
• Maintain reliable sprocket engagement
• Protect timing-chain guides
• Protect associated sprockets
• Reduce the risk of timing deviation
• Reduce the risk of the chain jumping
• Reduce the risk of chain derailment
• Support smooth engine operation
• Protect expensive internal engine components

Continuing to operate an engine with a confirmed timing-chain problem can allow wear to progress and substantially increase the cost of the eventual repair.

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

0PB109252C

The product you are viewing cross references to these numbers

Timing Chain.
The PORSCHE Timing Chain 98010532100 is a genuine Porsche internal engine timing component designed to maintain precise mechanical synchronisation within the engine timing system.
Sold Each.
x2 Required Per Engine.

Fits:

Diagram Ref No 15

The timing chain transfers rotational drive between associated timing components, helping maintain the correct relationship between crankshaft and camshaft operation. Accurate timing is essential because the pistons and valves must operate in a precisely coordinated sequence throughout the combustion cycle.

Although timing chains are designed for long service life, continuous mechanical loading, heat and friction can gradually cause wear. Chain elongation, worn guides, defective tensioners or damaged sprockets can introduce excessive slack and affect timing accuracy.

What This Product Does:
The timing chain forms part of the mechanical drive responsible for keeping critical internal engine components correctly synchronised.

Its functions include:

• Transferring rotational drive through the timing system
• Maintaining accurate crankshaft-to-camshaft timing
• Supporting correct camshaft operation
• Maintaining correct valve timing
• Keeping associated timing components synchronised
• Supporting smooth and consistent engine operation

The chain must remain correctly tensioned and accurately engaged with its sprockets to maintain the required timing relationship.

Symptoms Of Wear Or Failure:
Possible symptoms of timing-chain or associated timing-system deterioration include:

• Metallic rattling or clattering
• Timing-chain noise during cold starts
• Rattle immediately after engine start-up
• Excessive chain slack
• Timing-chain elongation
• Mechanical noise from the timing area
• Noise that changes with engine RPM
• Rough or irregular engine operation
• Unstable idle
• Difficult starting
• Reduced engine performance
• Misfires
• Engine warning light
• Timing-related diagnostic fault codes
• Camshaft-position faults
• Crankshaft/camshaft correlation faults
• Visible chain wear
• Worn or broken chain guides
• Abnormal sprocket wear
• Metal or plastic debris in the engine oil or filter

These symptoms are not exclusive to the timing chain. Accurate diagnosis should also consider guides, tensioners, sprockets, lubrication and other timing-system components.

Why Replacement Matters:
The timing chain is a critical internal engine component. Once excessive wear, elongation or physical damage has been confirmed, replacement is important for maintaining reliable mechanical timing.

Replacing a worn Timing Chain can help:

• Restore dependable timing-chain operation
• Maintain accurate engine timing
• Restore correct mechanical synchronisation
• Reduce excessive chain slack
• Reduce abnormal timing-chain noise
• Maintain reliable sprocket engagement
• Protect associated guides and sprockets
• Reduce the risk of timing deviation
• Reduce the risk of the chain jumping
• Reduce the risk of chain derailment
• Support smooth engine operation
• Protect expensive internal engine components

Continuing to operate an engine with a confirmed timing-chain problem may allow deterioration to progress and significantly increase repair costs.

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

98010532100

The product you are viewing cross references to these numbers

Oil Pump Drive Chain.
The Genuine Porsche Oil Pump Drive Chain 94810725212 is a critical internal engine component designed to transfer mechanical drive to the oil pump on compatible Porsche applications.
Fits:

• Porsche 957 Cayenne S / GTS 4.8L 2007-10
• Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
• Porsche 958 Cayenne S V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne GTS V8 4.8L Petrol (400Hp) 2010-17
• Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
• Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
• Porsche 970.1 Panamera S V8 4.8L 2009-13
• Porsche 970.1 Panamera 4S V8 4.8L 2009-13
• Porsche 970.1 Panamera GTS V8 4.8L 2011-13
• Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
• Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
• Porsche 970.2 Panamera GTS V8 4.8L 4WD (440Hp) 2014-16
• Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
• Porsche 970.2 Panamera Turbo V8 Executive 2014-16
• Porsche 970.2 Panamera Turbo S V8 4.8L 2014-16  

Diagram Ref No 15

The engine oil pump must operate continuously while the engine is running to circulate lubricant to bearings, rotating assemblies, timing components and other internal surfaces. The oil pump drive chain provides the mechanical connection required to operate the pump reliably.

Excessive chain wear, elongation or damage can compromise the oil pump drive and, in severe cases, contribute to loss of lubrication. Because inadequate oil circulation can rapidly cause expensive internal engine damage, a worn or damaged oil pump drive chain should be addressed promptly.
What This Product Does:
The oil pump drive chain transfers rotational movement from the engine's mechanical drive system to the oil pump.

The oil pump then circulates engine oil through the lubrication system to critical internal components.

The chain therefore helps support:

• Reliable operation of the engine oil pump
• Continuous engine oil circulation
• Correct lubrication of internal components
• Protection of bearings and rotating assemblies
• Lubrication of timing and valvetrain components
• Reduction of friction and mechanical wear
• Reliable long-term engine operation

The chain itself does not generate oil pressure. Instead, it provides the mechanical drive required for the oil pump to function.
Symptoms Of Wear Or Failure:
Oil pump drive chains are designed for extended service life, but wear can develop due to mileage, lubrication problems, contamination or deterioration of associated components.

Possible symptoms include:

• Rattling from the chain or drive area
• Metallic clattering or chain noise
• Excessive chain slack
• Chain elongation
• Visible chain wear during inspection
• Abnormal sprocket wear
• Low oil-pressure warning
• Oil-pressure related faults
• Abnormal engine noise associated with inadequate lubrication
• Metal particles or debris in the engine oil or filter

Some oil pump drive chain problems may provide little warning before becoming serious, so any confirmed abnormal wear should be investigated promptly.
Why Replacement Matters:
The oil pump drive chain performs a fundamental role in the engine lubrication system.

Replacing a confirmed worn or damaged Porsche Oil Pump Drive Chain 94810725212 can help:

• Restore reliable mechanical drive to the oil pump
• Maintain dependable engine oil circulation
• Reduce excessive chain movement
• Correct confirmed chain elongation
• Protect associated sprockets and drive components
• Support correct engine lubrication
• Reduce the risk of oil pump drive failure
• Help protect expensive internal engine components

Because lubrication is essential whenever the engine is running, deterioration of the oil pump drive should not be ignored.

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

94810725212

The product you are viewing cross references to these numbers

Timing Chain. 
The Genuine Porsche Timing Chain 94610516975 is a critical internal engine component designed for compatible Porsche applications. It forms part of the engine's mechanical timing drive, transferring rotational movement between timing components and helping maintain the precise relationship required for correct engine operation.

Fits:

• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17
• Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD (420Hp) 2014-16
• Porsche 970.2 Panamera S V6 Turbo 3.0L 2WD Executive 2014-16
• Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD (420Hp) 2014-16
• Porsche 970.2 Panamera 4S V6 Turbo 3.0L 4WD Executive 2014-16
• Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18  

Diagram Ref No 4

The timing chain operates continuously whenever the engine is running and works together with sprockets, chain guides and tensioners. Excessive chain wear, elongation or failure of associated timing components can affect timing accuracy, potentially resulting in noise, poor engine performance, diagnostic faults and serious internal engine damage.  

What This Product Does:

The timing chain transfers rotational drive through the engine's timing system and helps keep critical engine components operating in the correct mechanical relationship.

A correctly functioning timing chain helps:

• Maintain accurate mechanical engine timing
• Synchronise the timing drive
• Support correct valve timing
• Transfer rotational drive reliably
• Maintain smooth engine operation
• Support consistent combustion and performance
• Maintain accurate timing throughout the engine speed range

The chain functions as part of a complete system. The condition of its guides, tensioners and sprockets can directly affect timing-chain operation and service life.

Symptoms Of Wear Or Failure:
Timing chains are designed for long service life, but wear can develop due to mileage, inadequate lubrication, contaminated oil or deterioration of associated components.

Possible symptoms include:

• Metallic rattling from the timing-chain area
• Rattle immediately after engine start-up
• Persistent chain noise while the engine is running
• Check Engine Light
• Timing-related diagnostic fault codes
• Camshaft/crankshaft correlation faults
• Rough or unstable idle
• Engine misfires
• Difficult starting
• Poor acceleration
• Reduced engine performance
• Uneven engine operation
• Excessive chain slack
• Timing values outside specification
• Metal or guide material found in the engine oil or filter

Timing-related noises or diagnostic faults should be investigated promptly.

Why Replacement Matters:
The timing chain is fundamental to correct engine operation.

Replacing a confirmed worn or damaged Timing Chain helps:

• Restore correct timing-drive operation
• Maintain accurate mechanical timing
• Reduce excessive chain movement
• Correct problems associated with confirmed chain elongation
• Support smooth and consistent engine operation
• Reduce stress on associated timing components
• Prevent further deterioration of the timing system
• Reduce the risk of major internal engine damage

Timing-chain deterioration should not be ignored because a relatively manageable timing-system repair can become a significantly more expensive engine repair if the chain jumps timing or fails.

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

94610516975

The product you are viewing cross references to these numbers

Timing Chain, Center Lower.
The Genuine Porsche Timing Chain, Center Lower 958109229 is a critical internal engine timing component designed for compatible Porsche applications. The timing chain forms part of the mechanical drive system that keeps the crankshaft and associated timing components operating in the correct relationship.

Fits:

Diagram Ref No 28

Accurate engine timing is essential for correct combustion, smooth running and reliable engine operation. Because the timing chain operates continuously whenever the engine is running, wear, elongation or problems elsewhere in the timing system can eventually affect timing accuracy and potentially cause serious engine damage.  

What This Product Does:

The center lower timing chain transfers rotational drive within the engine's timing system.

Its role is to maintain the precise mechanical relationship required between the crankshaft and the timing components it drives.

A correctly operating timing chain system helps:

• Maintain accurate engine timing
• Synchronise rotating engine components
• Support correct valve timing through the timing drive
• Maintain smooth and consistent engine operation
• Support efficient combustion and engine performance
• Keep the timing system operating reliably throughout the engine speed range

The chain works together with components such as sprockets, guides and tensioners. These components should be considered as a complete system when diagnosing timing-related problems.

Symptoms Of Wear Or Failure:
Timing chains are designed for long service life, but they can still deteriorate due to mileage, lubrication problems, tensioner or guide wear, contamination and general mechanical wear.

Possible symptoms include:

• Rattling from the timing-chain area
• Rattle during engine start-up
• Metallic rattling or clattering while running
• Timing-related diagnostic fault codes
• Check Engine Light
• Rough idle
• Poor engine performance
• Hesitation or uneven acceleration
• Difficult starting
• Engine misfires
• Unstable engine operation
• Timing values outside the expected range
• Metal debris found in the engine oil or filter
• Excessive chain slack or elongation confirmed during inspection

Timing-related symptoms should be investigated promptly.

Why Replacement Matters:
The timing chain is a critical internal engine component. Excessive wear or failure can affect the mechanical timing of the engine.

Replacing a confirmed worn or damaged timing chain helps:

• Restore correct timing-system operation
• Maintain accurate mechanical timing
• Reduce excessive chain movement
• Address timing-chain rattling caused by confirmed chain wear
• Restore reliable engine operation
• Reduce stress on associated timing components
• Prevent further deterioration of the timing drive
• Reduce the risk of major engine damage

Timing-system faults should not be ignored because failure can progress from noise or timing errors to severe mechanical problems.

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

958109229

The product you are viewing cross references to these numbers

LED Headlamp.
The Genuine Porsche LED Headlamp 976941113A / 976941114A is a replacement front lighting assembly designed for compatible Porsche applications. Using LED lighting technology, the headlamp provides essential forward illumination while contributing to vehicle visibility, safety and the distinctive appearance of the front end.

Fits:

• Porsche 976 Panamera V6 2.9L 2023>>
• Porsche 976 Panamera 4 V6 2.9L 2023>>
• Porsche 976 Panamera 4 E-Hybrid V6 2.9L 2023>>
• Porsche 976 Panamera 4S E-Hybrid V6 2.9L 2023>>
• Porsche 976 Panamera GTS V8 4.0L 2023>>
• Porsche 976 Panamera Turbo E-Hybrid V8 4.0L 2023>>
• Porsche 976 Panamera Turbo S E-Hybrid V8 4.0L 2023>>  

Cars With Option Codes:
8IT - LED Headlamps
L0L - Left-Hand Drive
L0R - Right-Hand Drive
AV0 - Driving On The Left

Diagram Ref No 1 And 2

Modern LED headlamps combine precision optics, electronic controls and LED light sources within a sophisticated assembly. Damage to the lens or housing, moisture ingress, mounting damage or an internal electrical fault can affect lighting performance and may require replacement of the affected component or complete headlamp.  

What This Product Does:

The LED headlamp provides controlled forward illumination, allowing the driver to see the road and potential hazards during darkness and poor visibility.

Depending on the vehicle specification and lighting equipment, the headlamp may incorporate or interact with several lighting functions and electronic control systems.

Its primary functions include:

• Providing forward road illumination
• Supporting dipped and main-beam functions as applicable
• Improving visibility at night
• Helping illuminate road signs, pedestrians and potential hazards
• Making the vehicle more visible to other road users
• Maintaining the intended front lighting pattern
• Contributing to the vehicle's characteristic Porsche appearance

LED technology provides rapid illumination and allows precise control of light distribution through the headlamp's optical system.

Symptoms Of Wear Or Failure:
LED headlamps do not normally have a routine replacement interval. Replacement is typically required because of physical damage, deterioration or a confirmed electrical/electronic fault.

Common symptoms include:

• Headlamp not illuminating
• Complete or partial LED failure
• Reduced light output
• Flickering
• Intermittent illumination
• Uneven brightness between the headlights
• Headlamp warning messages
• Lighting-related diagnostic fault codes
• Incorrect or distorted beam pattern
• Headlamp failing to initialise correctly
• Persistent condensation
• Water inside the housing
• Cracked or damaged outer lens
• Broken mounting brackets
• Loose or incorrectly positioned headlamp
• Visible accident or impact damage

Because modern lighting systems contain multiple electronic components, accurate diagnosis is important before replacing the complete assembly.

Why Replacement Matters:
Headlamps are safety-critical components because they directly affect the driver's ability to see and the vehicle's visibility to other road users.

Replacing a confirmed defective or damaged LED headlamp can help:

• Restore effective road illumination
• Improve night-time visibility
• Restore failed LED functions
• Correct uneven or inadequate lighting
• Restore the intended beam pattern
• Correct insecure mounting
• Address physical damage or water ingress
• Restore dependable exterior lighting
• Restore the vehicle's original front-end appearance

A severely damaged or non-functioning headlamp can significantly reduce visibility during darkness and poor weather.

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

97694111

The product you are viewing cross references to these numbers

LED Headlight. 
The Genuine Porsche LED Headlight 9Y0941681 / 9Y0941682 is a replacement front lighting component designed for compatible Porsche applications. Using LED lighting technology, the headlight provides powerful forward illumination while forming an important part of the vehicle's safety, visibility and exterior design.

Fits:

• 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>>  

Cars With Option Codes:
8IT - LED Headlamps
AV0 - Driving On The Left

Diagram Ref No 1

A correctly functioning headlight allows the driver to see the road, signs and potential hazards during darkness and poor visibility while ensuring the vehicle remains visible to other road users.

LED headlight assemblies contain sophisticated lighting, optical and electronic components. Physical damage, moisture ingress, electronic faults or LED failure can result in reduced or complete loss of lighting functions and may require replacement of the affected component or assembly.

What This Product Does:
The LED headlight provides controlled forward illumination to help the driver safely operate the vehicle during darkness and reduced-visibility conditions.

Depending on the vehicle's equipment specification, the headlight assembly may incorporate or work with several lighting and control functions.

Its primary purpose is to:

• Illuminate the road ahead
• Provide dipped and main-beam illumination as applicable
• Improve visibility at night
• Help illuminate road signs and hazards
• Make the vehicle visible to other road users
• Provide the required front lighting pattern
• Support the vehicle's distinctive front-end appearance

LED technology provides rapid illumination and allows sophisticated optical control within a compact headlight assembly.

Symptoms Of Wear Or Failure:
Unlike a conventional replaceable halogen bulb, an LED headlight can incorporate multiple electronic and lighting components within the complete system.

Possible signs of deterioration or failure include:

• One headlight not illuminating
• Complete or partial loss of LED lighting
• Reduced light output
• Flickering
• Intermittent illumination
• Headlight warning message
• Lighting-related diagnostic fault codes
• Uneven light output between left and right sides
• Incorrect or distorted beam pattern
• Headlight failing to initialise correctly
• Condensation or excessive moisture inside the housing
• Water ingress
• Cracked or damaged outer lens
• Broken mounting points
• Headlight sitting loose or incorrectly
• Visible impact damage

Correct diagnosis is important because wiring, connectors, control modules, power supplies or vehicle electronics can sometimes produce symptoms similar to headlight failure.

Why Replacement Matters:
The headlights are safety-critical components.

Replacing a confirmed defective or physically damaged LED headlight can help:

• Restore correct road illumination
• Improve night-time visibility
• Restore failed LED functions
• Restore consistent left-to-right lighting
• Correct a damaged or distorted beam
• Restore secure mounting
• Address damage caused by water ingress
• Resolve confirmed headlight-related faults
• Restore the vehicle's front-end appearance
• Maintain dependable exterior lighting

Driving with significantly reduced or missing headlight output can compromise the driver's ability to identify hazards and make the vehicle less visible to others.

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

9Y094168

The product you are viewing cross references to these numbers

Transverse Coolant Breather Line. 

The Genuine Porsche Transverse Coolant Breather Line (Part Number 99710676702) is an important engine cooling system component designed to help maintain effective coolant circulation, air removal and reliable cooling system operation on compatible Porsche models.

Fits:

• Porsche Boxster 987 2.7L 2005-08/08
• Porsche Boxster 987 S 3.2/3.4L 2005-08/08
• Porsche Boxster 987 MKII 2.9L 2009-12
• Porsche Boxster S 987 MKII 3.4L 2009-12
• 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
• Porsche Cayman 2.7L 987C 2006-08
• Porsche Cayman S 3.4L 987C 2005-08
• Porsche Cayman 2.9L 987C MKII 2009-12
• Porsche Cayman S / R 3.4L 987C MKII 2009-12  

Diagram Ref No 13

Manufactured to Porsche's original equipment specifications, this transverse breather line forms part of the vehicle's coolant ventilation circuit, providing a dedicated passage for air and coolant to move between the relevant cooling system components.

The engine cooling system relies on an effective network of coolant pipes, hoses and ventilation lines to maintain consistent operating temperatures. Air trapped within the cooling circuit can interfere with coolant circulation, reduce heat transfer efficiency and contribute to localised hot spots.

The transverse coolant breather line helps provide the intended ventilation path within the cooling system, supporting the removal of trapped air and the correct distribution of coolant throughout the circuit.

Positioned within the vehicle's cooling system pipework, the line is designed to withstand normal coolant system pressure, temperature fluctuations and vibration.

Over time, the original breather line may become damaged, cracked, corroded or weakened due to ageing, exposure to heat, repeated temperature changes or mechanical stress. A leaking or restricted breather line may contribute to coolant loss, ineffective air removal and cooling system performance problems.

Replacing a damaged or deteriorated transverse coolant breather line with a Genuine Porsche component helps restore the original ventilation arrangement, maintain cooling circuit integrity and support reliable engine temperature regulation.

Ideal for cooling system repairs, coolant leak diagnosis, radiator pipework maintenance, engine servicing and preventative maintenance.

What This Product Does:
The transverse coolant breather line forms part of the engine's cooling system ventilation circuit and performs several important functions.

• Supports Cooling System Ventilation: Provides a passage for air and coolant within the designated cooling system vent circuit.
• Helps Remove Trapped Air: Allows air to migrate through the designed ventilation path, reducing the likelihood of air pockets forming within the cooling system.
• Supports Coolant Circulation: Helps maintain the conditions required for consistent coolant movement throughout the engine cooling circuit.
• Maintains Cooling System Integrity: Provides a sealed connection between the relevant cooling system components.
• Supports Engine Temperature Regulation: Helps the cooling system operate efficiently by maintaining its intended coolant ventilation arrangement.
• Reduces Airlock Risk: Supports the removal of trapped air that could interfere with coolant circulation after servicing or coolant replacement.
• Accommodates Normal System Pressure: Designed to operate under the normal temperature and pressure conditions of the vehicle's cooling system.
• Supports Cooling System Bleeding: Provides part of the intended air removal pathway when the cooling system is filled and bled according to Porsche procedures.
• Helps Protect Engine Components: Supports reliable cooling system operation, reducing the risk of problems associated with insufficient coolant circulation.
• Maintains Original Equipment Fitment: Replaces the original transverse breather line using the specified factory routing and connections.

Symptoms Of Wear Or Failure:
Cooling system breather lines are exposed to coolant, temperature changes, vibration and environmental conditions throughout their service life.

Over time, material deterioration, physical damage or corrosion may compromise the line or its connections.

Common symptoms of a worn or failing transverse coolant breather line include:

• Coolant Leakage: Visible coolant dripping or seeping from the breather line, its fittings or connection points.
• Low Coolant Level: Repeated coolant top-ups may indicate a leak within the breather line or another part of the cooling circuit.
• Visible Cracks or Splits: Damage to the pipe or its connecting sections may allow coolant to escape.
• Corrosion or Surface Deterioration: Ageing and environmental exposure may weaken the line or its fittings.
• Damaged or Loose Connections: Worn connectors, retaining clips or seals may prevent the line from remaining securely attached.
• Dried Coolant Deposits: White, pink or coloured residue around the line may indicate previous coolant seepage.
• Coolant Warning Messages: Significant coolant loss may activate the vehicle's low coolant warning.
• Engine Overheating: Coolant loss or ineffective removal of trapped air may contribute to higher-than-normal engine temperatures.
• Air Trapped in the Cooling System: A restricted or incorrectly connected vent line may contribute to persistent air pockets.
• Unusual Cooling System Noises: Gurgling or bubbling noises may occur when air remains trapped within the coolant circuit.
• Coolant Smell: Escaping antifreeze may produce a noticeable sweet smell around the vehicle.
• Physical Damage Following Repairs: Incorrect handling, accidental impact or improper installation may damage the breather line.
• Blocked or Restricted Vent Passage: Debris or internal deterioration may obstruct the intended air and coolant ventilation path.

Why Replacement Matters:
Replacing a cracked, leaking or damaged transverse coolant breather line is important for maintaining reliable cooling system operation and protecting the engine against excessive temperature.

Key Benefits of Replacement:

• Restores Cooling System Ventilation: Helps maintain the original air removal pathway within the coolant circuit.
• Reduces the Risk of Airlocks: Supports effective removal of trapped air that can interfere with coolant circulation.
• Helps Prevent Coolant Leaks: Replaces damaged lines or connections that allow coolant to escape.
• Supports Efficient Engine Cooling: Helps maintain the conditions required for effective coolant circulation and heat transfer.
• Reduces Overheating Risk: Restoring a leaking or restricted line can help address cooling system problems that may contribute to elevated engine temperatures.
• Maintains Cooling System Pressure Integrity: Provides the specified sealed connection within the cooling circuit.
• Supports Reliable Coolant Bleeding: Helps maintain the intended ventilation route during coolant refilling and servicing.
• Protects Engine Components: Reduces the risk of overheating-related damage caused by unresolved cooling system faults.
• Genuine Porsche Quality: Manufactured to the original equipment specification for compatible vehicles.
• Correct Factory Routing: Designed to match the intended transverse breather line position and connection arrangement.
• Supports Long-Term Cooling System Reliability: Helps prevent recurring problems caused by damaged or deteriorated ventilation pipework.
• Ideal During Cooling System Repairs: Suitable for replacement when surrounding coolant pipes or hoses are being serviced.
• Supports Preventative Maintenance: Allows ageing or damaged cooling system components to be replaced before more significant failures develop.

Although the transverse coolant breather line is a relatively small part of the complete cooling system, it performs an important function in maintaining the intended ventilation arrangement.

A damaged or leaking breather line can allow coolant to escape and may interfere with the cooling system's ability to remove trapped air effectively.

Persistent coolant loss or air pockets can reduce heat transfer efficiency and contribute to overheating, potentially placing additional thermal stress on the engine.

Replacing the defective line with a Genuine Porsche component helps restore the factory cooling system configuration and support dependable engine operation.

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

99710676702

The product you are viewing cross references to these numbers

Windscreen Wiper Arm Cap, Driver's Side. 
The Genuine Porsche Windscreen Wiper Arm Cap 95562830501 is a replacement protective and finishing cap for the driver's-side front windscreen wiper arm on first-generation Porsche Cayenne models.

Fits:

• Porsche 955 Cayenne 3.2L V6 2003-06
• Porsche 955 Cayenne S 4.5L V8 2003-06
• Porsche 955 Cayenne Turbo 4.5L 2003-06
• Porsche 955 Cayenne Turbo S 4.5L 2006>>
• Porsche 957 Cayenne 3.0L Diesel 2007-10
• Porsche 957 Cayenne 3.6L 2007-10
• Porsche 957 Cayenne S / GTS 4.8L 2007-10
• Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10  

Diagram Ref No 17

The small black plastic cap fits over the wiper-arm mounting nut at the base of the windscreen wiper.

Its purpose is to cover the exposed fastening hardware, helping protect the nut and spindle area from dirt, moisture and road contamination while providing the clean factory-finished appearance intended by Porsche.

Although it is a simple trim component, the cap is positioned in an exposed area at the base of the windscreen and experiences continuous sunlight, rain, temperature changes, car-washing chemicals and repeated disturbance whenever the wiper arm is removed.

Over time, the original cap can fade, become brittle, crack, loosen or disappear completely.

Replacing a damaged or missing cap restores the correct appearance of the wiper assembly and helps keep the wiper-arm retaining hardware protected from unnecessary environmental exposure.

What This Product Does:
The Windscreen Wiper Arm Cap covers the mounting nut that secures the wiper arm to the wiper spindle.

Its main functions are to:

• Cover the wiper-arm retaining nut.
• Protect the fixing from direct rain and moisture.
• Reduce dirt accumulation around the mounting hardware.
• Reduce exposure of the nut and spindle area to road contamination.
• Provide the correct finished appearance at the wiper-arm base.
• Help keep the wiper mounting area tidy.
• Replace a cracked, faded, loose or missing original cap.
• Restore factory-style exterior detailing.

Symptoms Of Wear Or Failure:
Because this is a protective trim part rather than a moving mechanical component, deterioration is usually visible.

Common signs include:

• Cap completely missing.
• Cracked plastic.
• Split edge.
• Broken retaining tabs.
• Loose fit.
• Cap repeatedly coming off.
• Faded black finish.
• Grey or chalky appearance.
• Warping.
• Distortion.
• Scratches.
• Damage following wiper-arm removal.
• Exposed wiper retaining nut.
• Corrosion visible on the mounting hardware.

Why Replacement Matters:
Replacing a missing or damaged Windscreen Wiper Arm Cap helps restore:

• Protection of the retaining nut.
• Cleaner wiper mounting area.
• Reduced direct moisture exposure.
• Reduced dirt accumulation.
• Correct factory appearance.
• Secure exterior trim fitment.

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

95562830501

The product you are viewing cross references to these numbers

Window Regulator. 

The Genuine Porsche Window Regulators 99754207502 and 99754207602 are replacement front door window-lifting mechanisms for selected Porsche 911 997 models.

Fits:

• Porsche 997 MK1 Carrera 2 3.6L 2007-08
• Porsche 997 MK1 Carrera 2S 3.8L 2007-08
• Porsche 997 MK1 Carrera 4 3.6L 2007-08
• Porsche 997 MK1 Carrera 4S 3.8L 2007-08
• Porsche 997 MK1 TURBO 2007-09
• Porsche 997 MK1 GT3 / GT3 RS 2007-09
• Porsche 997 MK1 GT2 2007-09
• Porsche 997 MKII GT3 / GT3 RS 2010-11  

Diagram Ref No 1

The regulator sits inside the door and converts the rotational movement produced by the electric window motor into controlled vertical movement of the door glass.

Part number 99754207502 is for the left-hand side, while 99754207602 is for the right-hand side.

These regulators are supplied as the mechanical window-lifting assembly and do not include the electric window motor.

The Porsche 997 uses frameless door glass on applicable Coupe and Targa models, making accurate window positioning particularly important. The regulator must guide the glass smoothly through its full travel while maintaining the correct alignment against the door seals and roof aperture.

Over time, the regulator mechanism can wear through repeated operation. Cables can stretch or fray, pulleys can deteriorate, guides can wear and retaining components can loosen or break.

Typical symptoms include slow or uneven glass movement, clicking or grinding noises, the window dropping into the door, glass sitting crooked, or the motor operating without moving the glass.

Replacing a worn or failed regulator restores correct window support and movement while allowing the original electric motor to be reused if it remains serviceable.

What This Product Does:
The Window Regulator supports and moves the door glass when the electric window system is operated.

Its main functions are to:

• Raise the door glass.
• Lower the door glass.
• Keep the glass properly supported.
• Guide the glass through a controlled vertical path.
• Maintain correct glass alignment.
• Transfer movement from the electric motor to the window.
• Support the frameless-glass drop and raise function where applicable.
• Hold the glass securely in its selected position.
• Replace a worn, damaged or failed original regulator mechanism.

Symptoms Of Wear Or Failure:
Common symptoms include:

• Window moving slowly.
• Window moving unevenly.
• Glass tilting during operation.
• Grinding noise inside the door.
• Clicking noise.
• Scraping noise.
• Window dropping suddenly.
• Glass falling into the door.
• Motor running but glass not moving.
• Window becoming stuck.
• Window stopping halfway.
• Glass failing to close completely.
• Excessive glass movement.
• Window not sealing correctly.
• Increased wind noise.
• Water ingress around the door glass.
• Window drop function operating incorrectly.

Why Replacement Matters:
Replacing a worn or failed Window Regulator helps restore:

• Smooth window operation.
• Correct glass alignment.
• Reliable raising and lowering.
• Proper glass support.
• Correct sealing against weatherstrips.
• Reduced wind noise.
• Reliable frameless-window operation.
• Secure retention of the door glass.

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

99754207

The product you are viewing cross references to these numbers

Air Conditioning Condenser. It transfers heat from the refrigerant as part of the vehicle's air conditioning circuit.

Fits

• Porsche 996 C2 3.4L 1997–08/01
• Porsche 996 C4 3.4L 1997–08/01
• Porsche 996 C2 3.6L 09/01–2005
• Porsche 996 C4 3.6L 09/01–2005
• Porsche 996 C4S 3.6L 09/01–2005
• Porsche 996 Turbo 2000–05
• Porsche 996 GT2 2001–05
• 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 GT2 2007–09
• Porsche 997 MK1 GT3 / GT3 RS 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
• Porsche Boxster 987 2.7L 2005–08/08
• Porsche Boxster 987 S 3.2/3.4L 2005–08/08
• Porsche Boxster 987 MKII 2.9L 2009–12
• Porsche Boxster S 987 MKII 3.4L 2009–12
• Porsche Cayman 2.7L 987C 2006–08
• Porsche Cayman S 3.4L 987C 2005–08
• Porsche Cayman 2.9L 987C MKII 2009–12
• Porsche Cayman S / R 3.4L 987C MKII 2009–12

What This Product Does

The condenser receives hot, high-pressure refrigerant from the compressor and releases its heat through the cooling fins. This changes the refrigerant from a gas into a liquid before it continues through the air conditioning system.

Functions

• Releases heat carried by the refrigerant
• Condenses high-pressure refrigerant gas into liquid
• Supports consistent cabin cooling
• Maintains the required refrigerant flow through the A/C circuit

Technical Details

• Product type: air conditioning condenser
• Porsche part number: 99757391105
• Brand: genuine Porsche
• Diagram quantity: two condensers per listed assembly

The condenser appears in Porsche refrigerant-circuit and front water-cooling diagrams for the 996, 997, 987 Boxster and 987C Cayman. The 996 diagram data includes the production note 02- and C4S application.

Symptoms of Fault

• Gradual reduction in air conditioning performance
• Warm or inconsistently cooled air from the vents
• Visible corrosion, bent fins or impact damage
• Oily residue or leak-detection dye around the condenser
• Refrigerant loss after the system has been recharged
• Restricted airflow caused by debris between the cooling fins

Why Replacement Matters

Condensers are positioned at the front of the vehicle, where moisture, road salt, debris and stone impacts can cause corrosion or leaks. Replacing a damaged or leaking unit helps restore correct refrigerant circulation and heat transfer. The system should be leak-tested and evacuated before being refilled, and the condition of the desiccator, seals and connected refrigerant lines should also be checked.

FAQs

• Can a condenser be cleaned? External debris may be removed carefully, but a leaking, heavily corroded or physically damaged condenser requires replacement.
• Should the desiccator also be renewed? Replacement is normally recommended when the refrigerant circuit has been open or contaminated.
• Is a vacuum test required? The repaired circuit should be evacuated and checked for leak tightness before the correct refrigerant charge is added.

Check fitment for your specific vehicle, including model, year and engine, before ordering.

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

99757391105

The product you are viewing cross references to these numbers

Speedometer Drive Fitting Bushing

Fits

• 911 1968–1973 2.2L / 2.4L / 2.7L RS LWB (F)
• 911 1974–1977 2.7L / 1976–1977 3.0 Carrera

Diagram Ref No 

What This Product Does

This small sleeve forms a locating point within the applicable 915 gearbox casing assembly. When installed correctly, it positions the adjoining housing or shaft-related components in accordance with the original transmission arrangement.

Functions

• Provides a defined locating interface inside the gearbox assembly
• Assists alignment of the associated transmission components
• Supports accurate positioning when the casing is assembled
• Replaces an original sleeve that is worn, distorted, damaged or absent

Technical Details

• Porsche part number: 91531830701
• Catalogue descriptions: fitting bushing, sleeve and dowel sleeve
• Applicable transmission variants listed in the diagram data: 915/06/16/40/43/45/48
• Quantity shown for each applicable diagram assembly: 1
• Assembly context: gear housing, transmission case front and transmission suspension
• Assembly context: gear housing and transmission cover

Symptoms of Fault

• Scoring, deformation or other visible damage found during dismantling
• Unwanted movement around the sleeve location
• A missing locating sleeve discovered during transmission work
• Difficulty positioning the related components during reassembly

Transmission noise, leakage and poor gear selection can have many causes. Inspect the casing, shafts, bearings, seals and linkage before identifying this sleeve as the source of a fault.

Why Replacement Matters

A damaged or missing fitting bushing may prevent the adjoining transmission parts from being located as intended. Replacement is appropriate when inspection reveals wear, distortion or loss during dismantling. Related casing surfaces, bearings, circlips, seals and fixings should also be examined during a gearbox overhaul.

FAQs

• Is this the complete transmission housing?
  No. This is the individual fitting bushing or dowel sleeve shown within the housing assemblies.
• Where is the sleeve fitted?
  It appears in exploded diagrams covering the complete gear housing, front transmission casing, transmission suspension and transmission cover.
• What quantity is listed?
  The supplied diagram information specifies one for each applicable assembly.
• Is it suitable for every Type 915 transmission?
  No. The supplied catalogue context identifies 915/06/16/40/43/45/48 variants, so the transmission number must be checked.
• What else should be inspected?
  Check the surrounding casing surfaces and associated bearings, seals, circlips and hardware before reassembly.

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

91531830701

The product you are viewing cross references to these numbers

Water / Coolant pipe O-ring 22 x 3 mm
This Porsche Genuine OE O-Ring (Part No. 99970751741) is a precision-engineered sealing ring (22 x 3 mm) used within the engine cooling system, specifically at water/coolant pipe connections. It is commonly referred to as a coolant pipe O-ring, water inlet O-ring, or thermostat housing seal.
Sold individually

Fits:
O-Ring 99970751741 is widely used across multiple Porsche models, including:
Porsche Cayenne (955 / 9YA)
Porsche Panamera (971 / 976)

Fitment / Position on car
•  Fitting position: Engine cooling system
•  Location: At coolant pipe joints / water inlet connections / thermostat housing
•  System: Engine cooling / coolant circulation

Cross Reference / Superseded Numbers: 99970751740 - replaced by 99970751741

The Porsche Genuine OE Coolant Pipe O-Ring 99970751741 is a small but essential sealing component used across many Porsche models. It ensures a leak-free connection within the cooling system, maintaining proper coolant flow, pressure, and engine temperature control. As a genuine Porsche part, it guarantees exact fitment and durability.

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

99970751741

The product you are viewing cross references to these numbers

Air Conditioning Refrigerant Line 

Fits

• Porsche 996 C4S 3.6L 09/01-2005
• Porsche 996 TURBO 2000-05

Diagram Ref No 11

What This Product Does

This line provides a sealed route for refrigerant travelling between designated components in the air-conditioning system. The supplied exploded-parts information describes the component as both a pressure line and a refrigerant line within the applicable 996 assemblies.

Functions

• Carries refrigerant through the air-conditioning circuit
• Connects the relevant factory climate-control components
• Helps retain the refrigerant charge within a sealed system
• Supports normal cooling and dehumidification when the system is correctly serviced

Technical Details

• Genuine Porsche component
• Part number: 99657309405
• Exploded-diagram descriptions: pressure line and refrigerant line
• Quantity shown: one per applicable diagram assembly
• Identified for C4S in the refrigerant circuit 996 1998–05 diagram
• Also referenced in the refrigerant circuit 996 TURBO 2001–05 diagram

Symptoms of Fault

• Cooling performance gradually becomes weaker or warm
• The system loses its refrigerant charge after servicing
• Oily residue or leak-detection dye appears near the line or connections
• Corrosion, abrasion, cracking or impact damage is visible
• Hissing may be present where a significant leak has developed
• Demisting performance is reduced when cooling and dehumidification are needed

Why Replacement Matters

A leaking or damaged line prevents the air-conditioning circuit from retaining the correct refrigerant charge. Renewing the affected component enables the system to be leak-tested, evacuated and recharged correctly rather than relying on repeated regassing. Inspect the connection seals, retaining supports and adjacent pipework during installation. Refrigerant recovery and charging require suitable air-conditioning service equipment.

FAQs

• Does weak cooling confirm that this line is faulty?
  No. Refrigerant may escape from several points in the circuit, so diagnosis and leak testing should be completed before replacement.
• Can the system be used without recharging after installation?
  No. Once opened, the circuit must be evacuated, checked for leak tightness and filled with the specified refrigerant quantity.
• Should the connection seals also be inspected?
  Yes. Hardened or damaged O-rings can cause leakage even when the line itself remains sound.
• How should compatibility be checked?
  Confirm part number 99657309405 against the vehicle identification number, model year and exact air-conditioning configuration.

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

99657309405

The product you are viewing cross references to these numbers

Pressure Pipe.
The Genuine Porsche Pressure Pipe 95511004650 is a replacement charge-air pipe used within the turbocharged intake system of the Porsche Cayenne 955 Turbo and Turbo S.

Fits:

• Porsche 955 Cayenne S 4.5L V8 2003-06
• Porsche 955 Cayenne Turbo 4.5L 2003-06
• Porsche 955 Cayenne Turbo S 4.5L 2006>>  

Diagram Ref No 8

Located within the pressurised section of the intake system, the pipe forms part of the connection between the intercooler system and the engine intake.

After the turbochargers compress the incoming air, the air passes through the charge-air coolers before continuing through the pressure-pipe system towards the engine.

This component helps collect and route that compressed air while maintaining the sealed intake path required for correct turbocharger boost pressure.

Because it operates on the pressurised side of the intake system, any crack, split, damaged sealing surface or loose connection can allow boost pressure to escape.

A boost leak can result in reduced engine performance, slower turbo response, hissing noises, fault codes and inconsistent power delivery.

Replacing a damaged pressure pipe helps restore the sealed charge-air system and allows the turbocharged engine to operate at the boost pressure intended by Porsche.

What This Product Does:
The Pressure Pipe forms part of the turbocharged engine's charge-air delivery system.

Its primary functions are to:

• Carry compressed air through the intake system.
• Connect the intercooler/charge-air system to the engine intake.
• Maintain boost pressure between the turbochargers and engine.
• Provide a sealed pathway for pressurised intake air.
• Support correct boost-pressure measurement.
• Help maintain consistent turbocharger response.
• Support correct engine-management calculations.
• Reduce pressure loss within the charge-air system.
• Replace a cracked, leaking or damaged original pressure pipe.

Symptoms Of Wear Or Failure:
Possible symptoms include:

• Loss of engine power.
• Reduced turbocharger boost.
• Slower acceleration.
• Increased turbo lag.
• Hissing under acceleration.
• Whooshing from the engine bay.
• Boost-pressure warning or fault codes.
• Check-engine light.
• Inconsistent power delivery.
• Engine entering reduced-power mode.
• Visible cracks in the pipe.
• Damaged pipe connections.
• Oil mist around a leaking charge-air joint.
• Loose boost-pressure sensor.
• Damaged sealing O-ring.

Why Replacement Matters:
Replacing a leaking or damaged Pressure Pipe helps restore:

• Correct charge-air sealing.
• Target boost pressure.
• Engine power.
• Turbocharger response.
• Consistent acceleration.
• Correct boost-pressure sensor operation.
• Engine-management stability.
• Reliable turbocharged intake operation.

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

95511004650

The product you are viewing cross references to these numbers

A/C Evaporator Temperature Sensor.
The Porsche A/C Evaporator Temperature Sensor 99657392500 is a genuine replacement temperature sensor for the vehicle's heating, ventilation and air-conditioning system.

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
• Porsche 996 C2 3.4L 1997-08/01
• Porsche 996 C4 3.4L 1997-08/01
• Porsche 996 C2 3.6L 09/01-2005
• Porsche 996 C4 3.6L 09/01-2005
• Porsche 996 C4S 3.6L 09/01-2005
• Porsche 996 TURBO 2000-05
• Porsche 996 GT2 2001-05
• Porsche 996 GT3 MKI 1999-02
• Porsche 996 GT3 MKII 2003>>
• Porsche 996 GT3 RS 2003-04  

Diagram Ref No 7

Installed within the air-conditioning housing, the sensor monitors temperature around the evaporator and intake-air area and sends this information to the climate-control electronics. The system uses the temperature signal to regulate air-conditioning operation and maintain consistent cabin cooling.

A correctly functioning sensor helps the HVAC system react accurately to temperature changes, prevent excessive evaporator cooling and deliver the selected cabin temperature.

What This Product Does:
The evaporator is the part of the air-conditioning system that absorbs heat from air entering the cabin. As refrigerant passes through it, the evaporator becomes cold and cools the airflow passing across it.

The temperature sensor continuously reports temperature information to the climate-control system so that cooling can be regulated correctly.

Its functions include:

• Monitoring temperature within the A/C evaporator housing
• Sending temperature data to the climate-control module
• Helping regulate compressor and cooling operation
• Supporting consistent cabin temperature control
• Helping prevent the evaporator becoming excessively cold
• Reducing the risk of evaporator icing
• Helping the HVAC system respond correctly to driver temperature settings
• Supporting efficient overall air-conditioning operation

The sensor itself does not produce cold air; instead, it provides the information the climate-control system needs to regulate cooling correctly.
Symptoms Of Wear Or Failure:
Temperature sensors can fail electrically or begin providing inaccurate readings with age.

Common symptoms of a faulty A/C evaporator temperature sensor may include:

• Air-conditioning cooling intermittently
• Cabin temperature not matching the selected setting
• A/C becoming cold and then unexpectedly warming
• Compressor cycling too frequently
• Compressor failing to operate when cooling is requested
• Evaporator icing or freezing
• Reduced airflow caused by ice forming on the evaporator
• Air-conditioning switching off prematurely
• Inconsistent vent temperatures
• Poor or erratic automatic climate-control operation
• HVAC fault codes relating to temperature sensing
• Temperature readings that appear implausible during diagnostic testing

Similar symptoms can also be caused by low refrigerant, a faulty expansion valve, compressor problems or other HVAC sensors, so diagnostic testing is recommended before replacement.
Why Replacement Matters:

• The climate-control system relies on accurate temperature information to regulate the air-conditioning system correctly.
• If the evaporator temperature sensor reports an incorrect value, the control system may believe the evaporator is warmer or colder than it actually is. This can cause the compressor to cycle incorrectly, reduce cooling performance or allow the evaporator to become excessively cold.
• An evaporator that becomes too cold can begin to ice over. As ice builds up on the evaporator surface, airflow through the ventilation system can be restricted and cabin cooling performance may deteriorate.
• Conversely, if the sensor incorrectly reports a temperature that is too low, the system may reduce or stop compressor operation too early, resulting in weak or inconsistent cooling.
• Replacing a faulty temperature sensor restores accurate temperature feedback to the HVAC control system and helps return the air-conditioning system to stable and predictable operation.

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

99657392500

The product you are viewing cross references to these numbers