Engine Block Hoses

O-ring for alternator. 10 x 4.
Sold each - 2 required per car

Fits:
Porsche 955 Cayenne 3.2L >>2005

Diagram ref no 12

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95510666600

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Water Coolant Hose – Essential for Reliable Cooling System Performance

This water coolant hose s designed for the Porsche 955 and 957 models, forming a critical part of the engine’s cooling circuit. It transports coolant to and from the engine and radiators, ensuring proper heat dissipation and stable operating temperatures—vital for high-performance V8 engines.

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 3.6L 2007-10
• Porsche 957 Cayenne S/GTS 4.8L 2007-10
• Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10

Diagram ref no 29

With age and heat cycles, coolant hoses can weaken, crack or develop internal swelling. A compromised hose may cause coolant leaks, overheating, reduced engine performance or complete cooling system failure. Replacing a worn hose with a high-quality alternative ensures the V8 Cayenne continues to run cool, efficient and trouble-free.

What This Coolant Hose Does

This specialised coolant hose:

• Transfers coolant between key cooling components
• Maintains optimal engine temperature under load
• Helps prevent overheating during towing or spirited driving
• Supports proper coolant circulation in V8 Cayenne engines
• Seals securely to avoid leaks and pressure loss

A healthy coolant hose is essential for maintaining engine reliability, especially in high-output S, GTS and Turbo variants.

Why Coolant Hoses Fail on Porsche Cayenne V8 Engines

Typical issues include:

• Heat-induced rubber degradation from repeated thermal cycles
  
• Cracking or splitting caused by age and vibration
  
• Internal hose collapse, restricting coolant flow
  
• Coolant contamination, accelerating material breakdown
  
• Pressure spikes from failing thermostats or caps
  
• Exposure to oil, which weakens hose material

Symptoms of failure may include coolant smells, visible drips, overheating warnings, or low coolant levels.

Why You Should Replace a Faulty Coolant Hose

Replacing a worn coolant hose provides:

• Restored coolant pressure and circulation efficiency
• Prevention of leaks and overheating
• Protection of sensitive engine components
• Reduced risk of roadside breakdowns
• Improved long-term reliability for engines

Given the high engine bay temperatures in Cayenne, S, GTS and Turbo models, replacing hoses proactively is a smart preventative step.

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95510607300

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Water Coolant Hose.
The OE Match Water Coolant Hose is a high-quality replacement cooling system hose designed to ensure the efficient circulation of engine coolant between key cooling system components on compatible Porsche models. Manufactured to OE specifications for fit, flexibility and durability, this hose helps maintain optimum engine operating temperature by providing a secure, unrestricted flow of coolant.  

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 3.6L 2007-10
• Porsche 957 Cayenne S/GTS 4.8L 2007-10
• Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10

Diagram Ref No 29

Constructed from premium multi-layer reinforced EPDM rubber, the hose is engineered to withstand high coolant pressures, extreme temperature fluctuations, engine vibration and long-term exposure to coolant. Precision-moulded to match the original factory routing, it provides direct OE-style fitment and dependable, leak-free performance.  
What This Product Does:

• Transfers coolant between engine cooling system components.
• Maintains continuous coolant circulation.
• Helps regulate engine operating temperature.
• Supports efficient heat dissipation from the engine.
• Provides a secure, leak-free coolant connection.
• Withstands high pressure and temperature changes.
• Helps prevent engine overheating.
• Forms an essential part of the vehicle's cooling system.

Symptoms Of Wear Or Failure:

• Visible coolant leaks.
• Cracked, split or swollen hose.
• Soft, brittle or deteriorated rubber.
• Coolant smell from the engine bay.
• Low coolant level.Engine overheating.
• White, pink or blue coolant residue around hose connections.
• Bulging hose when under pressure.
• Steam from the engine compartment.
• Coolant warning light or frequent coolant top-ups.

Why Replacement Matters:

• Coolant hoses operate in demanding conditions, where they are exposed to constant pressure cycles, hot coolant, engine vibration and changing temperatures. Over time, the rubber can harden, crack or weaken, while the internal reinforcement may deteriorate, increasing the risk of coolant leaks or sudden hose failure.
• A leaking or burst coolant hose can quickly reduce coolant levels, leading to engine overheating and potentially severe engine damage, including cylinder head distortion, head gasket failure and premature wear of internal engine components. Even a minor leak can reduce cooling system efficiency and result in costly repairs if left unattended.
• Replacing a worn or damaged coolant hose restores the integrity of the cooling system and ensures reliable coolant circulation. The OE Match replacement provides factory-style fitment, premium-quality materials and long-lasting durability, helping maintain optimum engine temperature, improve reliability and protect the performance and longevity of your Porsche.

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95510607300

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Water Hose. 

The Genuine Porsche Water Hose is a replacement engine cooling-system hose for selected Porsche Cayenne 955 3.2-litre V6 models.

Fits:

• Porsche 955 Cayenne 3.2L V6 2003-06

Diagram Ref No 3

Located within the engine's liquid-cooling circuit, this hose forms part of the network that carries coolant between the engine's water pipes and associated cooling-system components. Its role is to maintain a sealed, unrestricted path so coolant can circulate continuously and remove heat from the engine.

Although relatively small compared with the main radiator hoses, every coolant hose is important to overall cooling-system integrity. A split, hardened or leaking hose can allow coolant to escape, introduce air into the system and eventually reduce the engine's ability to control temperature.

Repeated heat cycles, cooling-system pressure, engine vibration and age gradually deteriorate rubber hoses. Replacing a damaged or ageing hose helps restore reliable coolant circulation and protects the engine from the consequences of coolant loss and overheating.

What This Product Does:
The water hose forms part of the closed engine cooling circuit.

It is designed to:

• Carry engine coolant between cooling-system components.
• Connect with the engine's coolant pipe network.
• Maintain continuous coolant circulation.
• Keep the cooling system sealed under pressure.
• Withstand normal engine operating temperatures.
• Accommodate engine vibration and thermal movement.
• Help maintain stable engine temperature.
• Prevent coolant loss when correctly installed.
• Replace a cracked, leaking, swollen or hardened original hose.

Symptoms Of Wear Or Failure:
Possible symptoms include:

• Visible coolant leakage.
• Dampness around the hose.
• Coolant dripping beneath the vehicle.
• Dried coolant residue around the hose ends.
• Sweet coolant smell after driving.
• Gradual reduction in coolant level.
• Coolant-level warning.
• Hose becoming hard or brittle.
• Surface cracking.
• Splits in the rubber.
• Swelling or bulging.
• Soft or spongy hose sections.
• Leakage around hose connections.
• Steam from the engine compartment.
• Engine temperature beginning to rise.
• Temperature fluctuations.
• Frequent need to top up the coolant.

Why Replacement Matters:
Replacing a worn water hose helps restore:

• Correct coolant circulation.
• Cooling-system sealing.
• Stable coolant level.
• Correct operating pressure.
• Consistent engine temperature.
• Reduced risk of sudden coolant loss.
• Reliable long-term cooling-system operation.

On an older Cayenne, preventative replacement is especially worthwhile when surrounding cooling-system components are already being serviced.

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95510615800

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