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Engine Block Hoses

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Special Order item
95810645302
Product Information
Product Information
Coolant Hose. 

The Genuine Porsche Coolant Hose 95810645302 is an original equipment replacement cooling system component designed for selected Porsche Cayenne, Macan and Panamera models equipped with the 3.0L diesel engine. Manufactured to Porsche's original specifications, this coolant hose provides a secure, reliable connection within the engine cooling circuit, helping maintain efficient coolant circulation and consistent engine temperature regulation.

Fits:

  • Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2012-17
  • Porsche 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.2 Panamera Diesel V6 3.0L (250Hp) 2014-16
  • Porsche 95B.1 Macan S Diesel 3.0L V6 (258Bhp) 2014-18  

Diagram Ref No 26

The coolant hose plays an important role in transferring coolant between designated cooling system components, supporting the engine's ability to maintain its correct operating temperature during everyday driving and demanding conditions.

Engine cooling hoses are continuously exposed to high temperatures, pressure changes, vibration and thermal cycling, which can cause the original material to deteriorate over time.

Designed for accurate fitment and dependable operation, this genuine Porsche replacement is ideal for repairing coolant leaks, replacing aged or damaged hoses and restoring the integrity of the engine cooling system.

What This Product Does:
The coolant hose forms part of the engine's liquid cooling system, providing a sealed passage for coolant to circulate between connected components. It helps maintain consistent coolant flow and system pressure, supporting effective engine temperature management.

Its key functions include:

Coolant Circulation: Allows coolant to flow between designated cooling system components, supporting efficient engine cooling.

Engine Temperature Regulation: Helps the cooling system maintain a stable operating temperature by enabling coolant circulation.

Cooling System Sealing: Provides a secure connection that helps prevent coolant leaks and maintain the correct system pressure.

Overheating Prevention: Supports effective engine cooling by helping maintain an uninterrupted coolant flow.

Thermal Resistance: Designed to withstand repeated exposure to engine heat and temperature fluctuations.

Pressure Resistance: Accommodates normal pressure changes within the vehicle's cooling system.

Engine Protection: Helps prevent excessive engine temperatures that could damage sensitive engine components.

Original Equipment Fitment: Maintains the correct hose routing and connection arrangement specified for the applicable Porsche cooling system.

Symptoms Of Wear Or Failure:
Over time, exposure to high temperatures, coolant pressure, vibration and general ageing can cause the coolant hose to weaken, crack or develop leaks.

Common signs include:

  • Visible Coolant Leaks: Coolant dripping beneath the engine compartment or collecting around hose connections may indicate damage or a failed seal.
  • Low Coolant Warning: A leaking hose can cause coolant levels to fall, triggering the dashboard coolant warning.
  • Frequent Coolant Top-Ups: Repeatedly needing to refill the coolant reservoir may indicate a leak within the cooling system.
  • Cracked or Split Hose Material: Visible cracks, splits or surface deterioration can indicate that the hose is approaching the end of its service life.
  • Swollen or Bulging Hose: Internal deterioration or excessive cooling system pressure may cause the hose to expand or deform.
  • Hardened or Brittle Material: Prolonged heat exposure can reduce the flexibility of the hose, increasing the risk of cracking.
  • Soft or Spongy Sections: Localised weakening of the hose structure may indicate internal material deterioration.
  • Coolant Smell from the Engine Bay: A sweet smell may indicate coolant escaping onto surrounding engine components.
  • Dried Coolant Residue: White, pink or coloured deposits around hose connections may indicate previous or ongoing coolant leakage.
  • Engine Overheating: Significant coolant loss may prevent the cooling system from regulating engine temperature effectively.
  • Fluctuating Temperature Readings: Coolant loss or air entering the cooling circuit may contribute to irregular engine temperature readings.
  • Steam from the Engine Compartment: A severe coolant leak may allow coolant to contact hot engine surfaces, producing visible steam.

Why Replacement Matters:
  • Replacing a worn, cracked or leaking coolant hose is essential for maintaining the reliability, efficiency and long-term protection of your Porsche's engine cooling system.
  • The engine cooling system relies on a continuous circulation of coolant through a sealed network of hoses, pipes and associated components. When a coolant hose becomes damaged or weakened, coolant can escape, reducing the system's ability to maintain the engine's correct operating temperature.
  • Even a small coolant leak can develop into a more serious issue if left unresolved. As coolant levels decrease, the risk of overheating increases, potentially resulting in damage to the cylinder head, head gasket and other critical engine components.
  • A severely deteriorated hose may fail suddenly under pressure, causing rapid coolant loss and potentially leaving the vehicle stranded.
  • Installing a genuine Porsche replacement coolant hose helps restore a secure and dependable cooling system connection. Its original equipment design helps ensure correct fitment, proper routing and compatibility with the specified engine configuration.
  • Replacing damaged hoses during routine maintenance or cooling system repairs can also help prevent further deterioration of adjoining components and reduce the likelihood of expensive repairs.
  • For Porsche Cayenne, Macan and Panamera diesel owners, maintaining the cooling system is particularly important for protecting the engine during extended journeys, heavy loads and demanding driving conditions.
  • The Genuine Porsche Coolant Hose 95810645302 provides a reliable original equipment replacement solution, helping maintain coolant circulation, prevent leaks and protect the engine against overheating.



Related reference numbers
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95810645302
95810645302
95810645300
95810645301

The product you are viewing cross references to these numbers
Special Order item
95810674905
Product Information
Product Information
Coolant Intermediate Flange Gasket.

Fits:
Porsche 92A Cayenne (958) 3.0L V6 Diesel 2011>>2018
Cars With Option Codes:
D1V / D43 / D50 / D51 / DV7

Porsche 95B Macan MKII 3.0L V6 2014>>2018
Cars With Engine Codes:
CDUD / CTBA / CTBB / CTBC

Porsche 970 Panamera MKI 3.0L V6 2010>>2016
Cars With Engine Codes:
CRCC / CRCB / CWJA

Part Goes On To Diagram Ref No 35

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

95810674905
95810674905

The product you are viewing cross references to these numbers
Special Order item
95810658312
Product Information
Product Information
Coolant Pipe For Engine Compressor.
Maintain reliable coolant circulation and effective temperature management with this Porsche Coolant Pipe for Engine Compressor, designed for compatible Porsche applications.  

Fits:
  • Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
  • Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
  • Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 36

This coolant pipe forms part of the vehicle's cooling circuit associated with the engine compressor system, providing a controlled route for coolant between the relevant components. Correct coolant circulation helps manage operating temperatures and protects heat-sensitive components from excessive thermal stress.

Cooling-system pipes operate in demanding conditions, regularly exposed to heat, pressure, vibration and repeated temperature cycles. Over time, the pipe itself, its connections or associated seals can deteriorate, potentially causing coolant seepage or a more significant leak.

A damaged or leaking coolant pipe can reduce the coolant level and compromise cooling-system performance. Replacing a confirmed faulty component with the correct Porsche Coolant Pipe 95810658312 helps restore a sealed cooling circuit and reliable coolant flow.

What This Product Does:

  • Carries coolant through the relevant cooling circuit.
  • Provides coolant routing for the engine compressor system where specified.
  • Connects associated cooling-system components.
  • Contains hot, pressurised coolant.
  • Helps maintain a sealed coolant circuit.
  • Supports correct coolant circulation.
  • Helps regulate component operating temperatures.
  • Supports effective heat transfer.
  • Helps prevent coolant loss when correctly installed and sealed.
  • Works alongside associated hoses, pipes, pumps and cooling components.
  • Replaces a leaking, corroded or damaged coolant pipe.
  • Provides a Porsche replacement component for compatible applications.  

Symptoms Of Wear Or Failure:
  • Visible coolant leakage.
  • Low coolant warning.
  • Coolant level repeatedly dropping.
  • Increasing need to top up the coolant.
  • Coolant smell from the engine compartment.
  • Wetness around the coolant pipe.
  • Leakage around pipe connections.
  • Dried or crystallised coolant residue.
  • Visible corrosion or deterioration.
  • Damaged or distorted pipework.
  • Leakage around seals or O-rings.
  • Steam from the engine compartment.
  • Engine temperature higher than normal.
  • Unusual temperature fluctuations.
  • Engine overheating.
  • Coolant collecting underneath the vehicle.  

Why Replacement Matters:
  • The cooling system depends on maintaining the correct coolant quantity within a sealed circuit.
  • Even a relatively small leak from the compressor coolant pipe can gradually reduce the coolant level. If the pipe, seal or connection deteriorates further, coolant loss may become substantially more severe.
  • Replacing a confirmed faulty Porsche Coolant Pipe 95810658312 helps restore cooling-system integrity before a minor leak develops into a more serious problem.


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

95810658312
95810658312
95810658310
95810658311

The product you are viewing cross references to these numbers
95810658312/1
Product Information
Product Information
Coolant Pipe For Engine Compressor.
Maintain reliable coolant circulation and effective temperature control with this OE Match Coolant Pipe for Engine Compressor, designed for compatible Porsche applications.  

Fits:
  • Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-17
  • Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
  • Porsche 970.2 Panamera S E-Hybrid V6 3.0L (416Hp) 2014-16  

Diagram Ref No 36

This coolant pipe forms part of the cooling circuit associated with the engine compressor system, providing a secure route for coolant between the relevant components. It must safely contain and transport coolant while the system is exposed to heat, pressure, vibration and repeated temperature changes.

Over time, coolant pipes, seals and connection points can deteriorate. Corrosion, physical damage, ageing seals or repeated thermal cycling may cause coolant seepage or more substantial leakage. Even a relatively minor leak can gradually reduce the coolant level and compromise cooling-system performance.

Replacing a damaged or leaking pipe with this OE Match Coolant Pipe helps restore a sealed cooling circuit, maintain dependable coolant flow and reduce the risk of overheating or associated component damage.


What This Product Does:

  • Carries coolant through the relevant cooling circuit.
  • Provides coolant routing for the engine compressor system where specified.
  • Connects associated cooling-system components.
  • Contains hot, pressurised coolant.
  • Helps maintain a sealed coolant circuit.
  • Supports correct coolant circulation.
  • Helps regulate component operating temperatures.
  • Supports effective heat transfer.
  • Helps prevent coolant loss when correctly installed and sealed.
  • Works alongside associated hoses, pipes, pumps and cooling components.
  • Replaces a leaking, corroded or damaged coolant pipe.
  • Provides a Porsche replacement component for compatible applications.  

Symptoms Of Wear Or Failure:
  • Visible coolant leakage.
  • Low coolant warning.
  • Coolant level repeatedly dropping.
  • Increasing need to top up the coolant.
  • Coolant smell from the engine compartment.
  • Wetness around the coolant pipe.
  • Leakage around pipe connections.
  • Dried or crystallised coolant residue.
  • Visible corrosion or deterioration.
  • Damaged or distorted pipework.
  • Leakage around seals or O-rings.
  • Steam from the engine compartment.
  • Engine temperature higher than normal.
  • Unusual temperature fluctuations.
  • Engine overheating.
  • Coolant collecting underneath the vehicle.  

Why Replacement Matters:

  • The cooling system depends on maintaining coolant within a sealed circuit.
  • A leaking coolant pipe allows the system level to fall. Initially, the leak may be small enough to appear only as dried residue or an occasional need to top up the coolant. However, deterioration can progress until a substantially larger leak develops.
  • Replacing a confirmed faulty OE Match Coolant Pipe helps restore system integrity before a minor coolant leak becomes a more serious problem.



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

95810658312
95810658312
95810658310
95810658311

The product you are viewing cross references to these numbers
Special Order item
94810606921
Product Information
Product Information
Coolant pipe heater.

Fits:
Porsche 970 Panamera 4.8L 2009-16
Porsche 958 Cayenne 4.8L 2010-18

Diagram ref no 8

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

94810606921
94810606921

The product you are viewing cross references to these numbers
94810606921/1
Product Information
Product Information

Heater Coolant Pipe 

High-quality replacement coolant pipe heater designed for Porsche Panamera 970 V8 and Cayenne 958 V8 models.

This component plays an important role in the engine cooling system, assisting with temperature regulation and ensuring efficient coolant flow through the system. Proper operation helps maintain optimal engine temperatures and supports overall engine performance and longevity.

Fits:

  • 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 8

Manufactured to OEM specifications, this coolant pipe heater provides precise fitment and reliable durability—ideal for maintenance, repair, or preventative replacement on Porsche V8 engines.

Key Features

• Direct replacement coolant pipe heater
• Suitable for Porsche Panamera 970 V8 and Cayenne 958 V8
• Supports proper coolant circulation and temperature control
• OEM-style fit and performance
• Durable construction for long-term reliability
• Ideal for maintenance and cooling system repair

Function and Purpose

The coolant pipe heater is part of the engine’s thermal management system.

It helps to:

• Support consistent coolant temperature regulation
• Maintain efficient coolant flow through the system
• Improve engine warm-up and operating stability
• Protect engine components from overheating

Why Replace Your Coolant Pipe Heater

Cooling system components can degrade over time due to heat and pressure.

Common issues include:

• Reduced heating or coolant efficiency
• Internal wear or failure
• Coolant leaks or weak points
• Risk of overheating or inconsistent temperatures

Replacing the component ensures continued cooling system reliability.



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

94810606921
94810606921

The product you are viewing cross references to these numbers
Special Order item
97010604400
Product Information
Product Information
Coolant Pipe.
The Coolant Pipe is a genuine Porsche OEM cooling system component designed to route engine coolant within the closed-loop cooling circuit. This rigid coolant pipe directs overflow and circulating coolant between key cooling system components, including the engine and expansion reservoir, helping maintain proper pressure balance and stable engine operating temperatures. Manufactured to Porsche specifications, it provides precise fitment, high resistance to heat and pressure, and long-term durability for Porsche Panamera (970) models.

Fits:
  • Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • 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 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  

Diagram Ref No 14

What This Product Does:
  • Transfers engine coolant through the cooling circuit, helping move heat away from the engine.
  • Routes overflow or return coolant back toward the expansion/reservoir tank as part of the closed-loop system.
  • Helps maintain proper cooling system pressure and balance during temperature changes.
  • Provides a secure, rigid connection between cooling components to ensure reliable coolant flow.

Symptoms Of Wear Or Failure:
  • Coolant may drip or seep from the pipe body, joints, or connection points, often leaving visible residue or staining.
  • A leaking coolant pipe can cause gradual coolant loss, requiring frequent top-ups.
  • Loss of coolant or pressure imbalance can reduce cooling efficiency and cause temperature instability.
  • A noticeable coolant odor in the engine bay often indicates leakage from the cooling system.
  • Signs may include cracked plastic sections, corrosion on metal pipe sections, damaged or worn sealing areas, loose or degraded connection points.
  • Low coolant or overheating warnings may appear if the pipe begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that can lead to low coolant levels and reduced system pressure.
  • Helps avoid engine overheating, which can result in serious and costly engine damage.
  • Restores proper coolant routing, ensuring efficient heat transfer throughout the cooling circuit.
  • Maintains cooling system integrity, preventing air intrusion and pressure imbalance.
  • Protects surrounding components, as leaking coolant can damage hoses, wiring, sensors, and engine parts.


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

97010604400
97010604400

The product you are viewing cross references to these numbers
97010604400/1
Product Information
Product Information
Coolant Pipe.
The Coolant Pipe is a OE MATCH cooling system component designed to route engine coolant within the closed-loop cooling circuit. This rigid coolant pipe directs overflow and circulating coolant between key cooling system components, including the engine and expansion reservoir, helping maintain proper pressure balance and stable engine operating temperatures. It provides precise fitment, high resistance to heat and pressure, and long-term durability for Porsche Panamera (970) models.

Fits:
  • Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • 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 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  

Diagram Ref No 14

What This Product Does:
  • Transfers engine coolant through the cooling circuit, helping move heat away from the engine.
  • Routes overflow or return coolant back toward the expansion/reservoir tank as part of the closed-loop system.
  • Helps maintain proper cooling system pressure and balance during temperature changes.
  • Provides a secure, rigid connection between cooling components to ensure reliable coolant flow.

Symptoms Of Wear Or Failure:
  • Coolant may drip or seep from the pipe body, joints, or connection points, often leaving visible residue or staining.
  • A leaking coolant pipe can cause gradual coolant loss, requiring frequent top-ups.
  • Loss of coolant or pressure imbalance can reduce cooling efficiency and cause temperature instability.
  • A noticeable coolant odor in the engine bay often indicates leakage from the cooling system.
  • Signs may include cracked plastic sections, corrosion on metal pipe sections, damaged or worn sealing areas, loose or degraded connection points.
  • Low coolant or overheating warnings may appear if the pipe begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that can lead to low coolant levels and reduced system pressure.
  • Helps avoid engine overheating, which can result in serious and costly engine damage.
  • Restores proper coolant routing, ensuring efficient heat transfer throughout the cooling circuit.
  • Maintains cooling system integrity, preventing air intrusion and pressure imbalance.
  • Protects surrounding components, as leaking coolant can damage hoses, wiring, sensors, and engine parts.


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

97010604400
97010604400

The product you are viewing cross references to these numbers
97010650101/1
Product Information
Product Information

Coolant return hose by OE Match this is the return line within the coolant expansion tank assembly.

Fits

  • Porsche 970 Panamera 3.6L 2011-16

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

Diagram ref no 34

What This Product Does

This hose carries returning coolant through its designated section of the cooling circuit. A sound hose and correctly sealed connections help retain coolant as it circulates through the system. It is a replacement return line, rather than an expansion tank, cap or level sender.

Functions

  • Provides a passage for returning coolant.
  • Contains coolant within the return circuit.
  • Connects the associated cooling-system components.

Technical Details

  • Part reference: 97010650101.
  • Component identification: coolant hose, return line.
  • Supplied engine/model identifiers: 4620, 4640, CWAA and CXNA.
  • Application: specified 3.6L V6 Panamera and Panamera 4 variants.

Symptoms of Fault

  • Moisture or dried coolant deposits at the connections.
  • A sweet odour following a journey.
  • A gradually falling coolant level or recurring warning.
  • Cracking near a clamp or connection.
  • Swollen sections or unusually soft areas.
  • Seepage that appears only when the system is hot.
  • Staining beneath the engine or on the undertray.
  • Gurgling or an unexpected temperature increase.

Why Replacement Matters

Renewing a deteriorated return hose addresses a potential source of coolant loss. Repeated heating and cooling, ageing and contamination can weaken hoses or their connections. Inspect neighbouring fittings, clips and sealing surfaces during the repair, since replacing the hose alone will not resolve damage elsewhere. OE Match focuses on replacement components for Porsche applications, with specification and fitment checks forming part of its development process.

FAQs

  • How can a suspected hose leak be located?
    A cooling-system pressure test can help reveal seepage. Examine the hose ends and nearby connections for fresh moisture or deposits.
  • Why might there be no puddle?
    Small amounts of escaping coolant may evaporate against hot surfaces or remain trapped above the undertray.
  • Should the clamps also be checked?
    Yes. Inspect their condition and retention, together with the adjoining fittings, before reassembly.
  • Do these symptoms confirm this hose has failed?
    No. Nearby pipes, seals, the pump or thermostat housing can produce similar signs, so establish the leak source first.


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

97010650101
97010650101

The product you are viewing cross references to these numbers
Special Order item
95810646601
Product Information
Product Information
Cooling system breather pipe

Fits:
Porsche 958 Cayenne 3.0L Diesel 2012-18
Porsche 95B Macan 3.0L Diesel 2014-18
Porsche 970 Panamera 3.0L Diesel 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 23

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95810646601
95810646601
95810646600

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94810602622/1
Product Information
Product Information
Cooling water breather pipe
This OE Match cooling water breather pipe is a direct replacement for the original Porsche coolant vent line fitted to selected Porsche 970 Panamera and 958 Cayenne V8 models. Installed within the engine cooling circuit, the breather pipe connects key coolant passages and allows trapped air and coolant vapour to be vented correctly through the system. Proper coolant venting is essential on high-performance Porsche V8 engines to prevent air pockets, maintain stable coolant flow, and support efficient engine temperature regulation.

Fits:
Porsche 970 Panamera 4.8L V8 2010-2016 S / GTS / TURBO
 * engine codes: M48.20 / M48.40 / MCX.PA / MCX.RA / MCX.P / MCX.R / MCW.BA / MCW.CA / MCW.B / MCW.C

Porsche 958 Cayenne 4.8L V8 2011-2018 S / GTS / TURBO / TURBO S
 * engine codes: M48.02 / M48.52 / MCF.TB / MCY.XA / MCF.T / MCY.X

Diagram ref no 11

The cooling water breather pipe vents and circulates coolant within the engine cooling system, helping eliminate trapped air and maintain correct coolant pressure and flow throughout the engine.

Function
•  Vents trapped air from the cooling system
•  Supports proper coolant circulation and pressure regulation
•  Helps maintain stable engine operating temperature
•  Reduces risk of air pockets within cooling system
•  Protects against coolant leaks and overheating

Cooling system hoses and breather pipes are constantly exposed to heat, coolant pressure, and vibration. Over time, the material can harden, crack, or become porous, increasing the risk of coolant leaks and air entering the cooling system. Replacing ageing breather pipes helps maintain reliable cooling system operation and prevents potential engine overheating issues.

When to replace
•   Visible coolant leaks or staining
•   Cracked or brittle coolant hose material
•   Cooling system pressure loss
•   Overheating or fluctuating coolant temperatures
•   During preventative cooling system maintenance
•   During engine or coolant hose servicing

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

94810602622
94810602622

The product you are viewing cross references to these numbers
Special Order item
94810602622
Product Information
Product Information
Cooling water breather pipe.

Fits:
Porsche 970 Panamera 4.8L V8 2010-2016 S / GTS / TURBO

Porsche 958 Cayenne 4.8L V8 2011-2018 S / GTS / TURBO / TURBO S

Panamera engine codes:
M48.20 / M48.40 / MCX.PA / MCX.RA / MCX.P / MCX.R / MCW.BA / MCW.CA / MCW.B / MCW.C

Cayenne engine codes:
M48.02 / M48.52 / MCF.TB / MCY.XA / MCF.T / MCY.X

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

94810602622
94810602622

The product you are viewing cross references to these numbers
Special Order item
94610602622
Product Information
Product Information
Cooling water breather pipe.

Fits:
Porsche 970 Panamera 3.6L V6 2011-2016

Engine codes:
M46.20 / M46.40 / MCW.AA / MCX.NA / MCW.A / MCX.N

Click 'Zoom in' for large parts diagram.
Diagram ref no 11

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

94610602622
94610602622

The product you are viewing cross references to these numbers
94610602622/1
Product Information
Product Information

Cooling water breather pipe for the Porsche 970 Panamera with a 3.6L V6 engine. 

Fits:

  • Porsche 970.1 Panamera V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • Porsche 970.2 Panamera V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • 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

Engine codes:
M46.20 / M46.40 / MCW.AA / MCX.NA / MCW.A / MCX.N

Diagram ref no 11

What This Product Does

This pipe forms part of the engine coolant breather circuit. It provides the connection used by that circuit within the cooling system.

Technical Details

  • Brand: OE Match.
  • Component identification: cooling water breather pipe / breather line.
  • Engine identifiers recorded for this part in the supplied diagram: 4620, 4640, CWAA and CXNA.


Symptoms of Fault

  • Moisture or dried coolant deposits around pipe connections.
  • A sweet coolant odour following a journey.
  • Coolant level falling between checks.
  • Visible damage or leakage from the pipe or its fittings.
  • Temperature increases or coolant warnings associated with coolant loss.


Why Replacement Matters

A damaged breather pipe or leaking connection can allow coolant to escape. Renewing a confirmed faulty component addresses the leak; inspecting adjacent connections at the same time helps identify other sources of seepage. These symptoms can also originate elsewhere in the cooling system, so diagnosis should precede replacement.

FAQs

How should a suspected leak be checked?
Inspect the pipe and connection points for dampness or deposits. A cooling-system pressure test can help locate leaks that are difficult to see.

What should be checked before selecting this pipe?
Confirm the vehicle's engine identification and compare reference 94610602622 with the component being replaced.



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

94610602622
94610602622

The product you are viewing cross references to these numbers
Special Order item
94810642112
Product Information
Product Information
Cooling Water Tube, Return.

The Cooling Water Tube, Return is a genuine Porsche OEM coolant return pipe designed to route returning coolant through the engine cooling system. This rigid connector tube helps maintain correct coolant circulation and system pressure, supporting stable engine operating temperatures and reliable heating performance. Manufactured to Porsche specifications, it provides precise fitment and durability for Porsche 957 / 958 / 970 models.

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 V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • 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 V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • 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 13 (Diagram Ref No 2 Included)

What This Product Does:

  • Routes returning coolant through the cooling system to complete the circulation loop.
  • Helps maintain proper coolant flow and pressure, ensuring efficient heat transfer and stable engine temperatures.
  • Supports reliable engine cooling by ensuring coolant can flow back toward other cooling components without restriction.
  • Provides a rigid, durable coolant pathway, reducing the risk of kinking or collapse compared to flexible hoses.

Symptoms Of Wear Or Failure:
  • Coolant may drip or seep from the tube itself or from the hose connection points, often leaving staining or residue.
  • A leaking return tube can cause gradual coolant loss, requiring frequent top-ups.
  • If the return pipe leaks or becomes restricted, coolant circulation can be disrupted, causing rising or fluctuating engine temperatures.
  • A noticeable sweet smell in the engine bay is often a sign of coolant escaping from the system.
  • Common visible signs include corrosion/pitting, cracking near joints, weakened metal around fittings or mounting areas
  • Poor coolant circulation can affect the heater circuit, leading to weak or inconsistent cabin heat.
  • Modern Porsche models may trigger low coolant or overheating warnings if the tube begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that cause low coolant levels and loss of system pressure.
  • Helps avoid engine overheating, which can result in severe and costly engine damage.
  • Restores proper coolant circulation, ensuring the cooling system functions efficiently under all driving conditions.
  • Maintains reliable heater performance, since consistent coolant flow is required for the heater core to work correctly.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, seals, and nearby engine parts.


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

94810642112
94810642112
94810642104
94810642110

The product you are viewing cross references to these numbers
94810642112/1
Product Information
Product Information
Cooling Water Tube, Return.

The Cooling Water Tube, Return is a OE MATCH coolant return pipe designed to route returning coolant through the engine cooling system. This rigid connector tube helps maintain correct coolant circulation and system pressure, supporting stable engine operating temperatures and reliable heating performance. It provides precise fitment and durability for Porsche 957 / 958 / 970 models.

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 V6 3.6L 2WD 2009-13
  • Porsche 970.1 Panamera 4 V6 3.6L 4WD 2009-13
  • 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 V6 3.6L 2WD (310Hp) 2014-16
  • Porsche 970.2 Panamera 4 V6 3.6L 4WD (310Hp) 2014-16
  • 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 13 (Diagram Ref No 2 Sold Separately)

What This Product Does:
  • Routes returning coolant through the cooling system to complete the circulation loop.
  • Helps maintain proper coolant flow and pressure, ensuring efficient heat transfer and stable engine temperatures.
  • Supports reliable engine cooling by ensuring coolant can flow back toward other cooling components without restriction.
  • Provides a rigid, durable coolant pathway, reducing the risk of kinking or collapse compared to flexible hoses.

Symptoms Of Wear Or Failure:
  • Coolant may drip or seep from the tube itself or from the hose connection points, often leaving staining or residue.
  • A leaking return tube can cause gradual coolant loss, requiring frequent top-ups.
  • If the return pipe leaks or becomes restricted, coolant circulation can be disrupted, causing rising or fluctuating engine temperatures.
  • A noticeable sweet smell in the engine bay is often a sign of coolant escaping from the system.
  • Common visible signs include corrosion/pitting, cracking near joints, weakened metal around fittings or mounting areas
  • Poor coolant circulation can affect the heater circuit, leading to weak or inconsistent cabin heat.
  • Modern Porsche models may trigger low coolant or overheating warnings if the tube begins to fail.

Why Replacement Matters:
  • Prevents coolant leaks that cause low coolant levels and loss of system pressure.
  • Helps avoid engine overheating, which can result in severe and costly engine damage.
  • Restores proper coolant circulation, ensuring the cooling system functions efficiently under all driving conditions.
  • Maintains reliable heater performance, since consistent coolant flow is required for the heater core to work correctly.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, seals, and nearby engine parts.


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

94810642112
94810642112
94810642104
94810642110

The product you are viewing cross references to these numbers
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About Engine Block Hoses

Engine Block Coolant Hoses – Front Engine Porsche Models | Reliable Cooling for Peak Performance

Engine block coolant hoses are critical to maintaining stable engine temperatures and preventing overheating in your Porsche’s front-engine cooling system. These hoses circulate coolant between the engine block, radiator, and heater core, ensuring consistent temperature regulation and efficient heat dissipation — essential for performance, reliability, and longevity.

At Design911, we supply a complete selection of genuine and manufacturer-quality engine block coolant hoses for front-engine Porsche models, including the transaxle models, Cayenne, Panamera, and Macan. Each hose is precisely engineered for a perfect fit and superior heat resistance, offering the same durability, flexibility, and performance as factory-installed components.

What Do Engine Block Coolant Hoses Do?

Coolant hoses in the engine block are responsible for transferring coolant throughout the engine’s cooling circuit. Their main functions include:

  • Carrying coolant between the radiator, water pump, and engine block.
  • Regulating engine temperature for efficient performance.
  • Maintaining system pressure within the cooling system.
  • Preventing heat build-up that can lead to overheating or gasket failure.

Properly functioning coolant hoses are essential for ensuring your Porsche’s front-mounted engine operates within optimal temperature ranges — especially during heavy use or long drives.

Why Do Engine Block Coolant Hoses Fail?

Due to constant exposure to heat, pressure, and coolant chemicals, these hoses naturally degrade over time. Common causes of failure include:

  • Heat damage from prolonged exposure to high engine temperatures.
  • Rubber deterioration or cracking from age and coolant corrosion.
  • Leaks at joints or clamps due to pressure fluctuations.
  • Swelling or soft spots from internal chemical breakdown.
  • Mechanical abrasion from contact with nearby components.

Symptoms of failing hoses include visible coolant leaks, overheating, low coolant levels, or a strong coolant smell from the engine bay.

Why Replace Faulty Engine Block Coolant Hoses?

A leaking or weakened hose can cause serious cooling system failures, including overheating and engine damage. Replacing old or brittle hoses ensures reliable coolant circulation and safeguards your Porsche’s engine performance.

Benefits of replacement include:

  • Restored cooling efficiency and pressure control.
  • Prevention of leaks and overheating.
  • Improved long-term reliability and system safety.
  • Manufacturer-quality materials for perfect fit and heat resistance.

All replacement hoses in this range are constructed using reinforced, high-grade rubber compounds that meet or exceed factory standards, ensuring durability and dependability in all driving conditions.

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