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Porsche > Cayenne 9PA1 (957) 2007-2010 > 957 Cayenne Turbo / Turbo S 4.8L 2007-10 > Engine Cooling > Coolant Hoses and Pipes (Front engine cars) >

Engine Block Hoses

Engine Block Hoses

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DISPLAYING 17 to 22 (of 22 products)
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O-Ring 11x2,5 Water Coolant Breather Line. Porsche 957 / 958 Cayenne / 970 Panamera / 95B Macan - 99970758640 - ORS34382
2
O-Ring 11x2,5 Water Coolant Breather Line. Porsche 957 / 958 Cayenne / 970 Panamera / 95B Macan
99970758640/1
Product Information
Product Information

O-Ring – 11 x 2.5mm Water Coolant Breather Line
Sold each

Ensure a reliable, leak-free cooling system with this OE Match O-Ring, measuring 11 x 2.5mm. Designed as a direct replacement for the original seal used on the water coolant breather line.

Fits:

  • Porsche 957 Cayenne S / GTS 4.8L 2007-10
  • Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
  • 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 970.1 Panamera Diesel V6 3.0L 2011-13
  • Porsche 970.1 Panamera S Hybrid V6 3.0L 2011-13
  • 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
  • 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
  • Porsche 95B.1 Macan GTS Petrol 3.0L V6 (360Bhp) 2014-18
  • Porsche 95B.1 Macan Turbo 3.6L V6 (400Bhp) 2014-18

Diagram ref no 12

Although small, this sealing ring plays a vital role in maintaining the integrity of the cooling system. It creates a watertight seal between the breather line and its mating components, preventing coolant leaks while allowing the cooling system to maintain the correct operating pressure. Replacing ageing or damaged O-rings during cooling system maintenance helps prevent coolant loss, overheating and expensive engine repairs.

Manufactured from high-quality, coolant-resistant elastomer, this OE Match O-ring is designed to match the dimensions and performance of the original Porsche component for dependable long-term sealing.

What Does the Water Coolant Breather Line O-Ring Do?

The coolant breather line O-ring seals the connection between coolant pipes and breather line fittings within the engine's cooling system.

Its functions include:

  • Preventing coolant leaks.
  • Maintaining cooling system pressure.
  • Ensuring efficient coolant circulation.
  • Preventing air from entering the cooling system.
  • Supporting correct engine operating temperatures.
  • Helping maximise cooling system efficiency.

A correctly sealing O-ring is essential for maintaining the performance and reliability of the engine cooling system.

Why Does the O-Ring Need Replacing?

Over time, coolant seals are subjected to constant temperature fluctuations and coolant exposure, causing them to deteriorate.

Common causes of failure include:

  • Heat cycling.
  • Age-related hardening.
  • Loss of elasticity.
  • Coolant chemical degradation.
  • Damage during removal.
  • Compression set after years of service.
  • Cooling system repairs requiring seal replacement.

As with most sealing components, O-rings should always be replaced once removed.

Symptoms of a Failing Coolant Breather Line O-Ring

Signs of a worn or damaged seal include:

  • Coolant leaks around the breather line.
  • Pink, white or dried coolant residue.
  • Low coolant warning messages.
  • Frequent coolant top-ups.
  • Sweet coolant smell from the engine bay.
  • Reduced cooling system pressure.
  • Small coolant drips after driving.

Replacing the O-ring at the first sign of leakage helps prevent overheating and further cooling system damage.

When Should the O-Ring Be Replaced?

Replacement is recommended whenever:

  • The coolant breather pipe is removed.
  • Cooling system components are replaced.
  • A coolant leak is diagnosed.
  • Carrying out thermostat or water pump repairs.
  • Performing preventative cooling system maintenance.
  • Rebuilding or servicing the engine.

Installing a new O-ring during reassembly ensures a reliable seal and reduces the risk of future coolant leaks.



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

99970758640
99970758640

The product you are viewing cross references to these numbers
O-Ring, 19.6 X 3.53N. Porsche 957 / 958 Cayenne / 970 Panamera 2007-18 - 99970182541, 99970182540
2
O-Ring, 19.6 X 3.53N. Porsche 957 / 958 Cayenne / 970 Panamera 2007-18
Special Order item
99970182541
Product Information
Product Information

O-Ring, 19.6 X 3.53N.
The O-Ring 19.6 x 3.53N is a genuine Porsche OEM sealing ring designed to create a tight, leak-free seal between coolant pipe connections and related engine cooling system components. Manufactured to precise dimensions, this O-ring fits into the mating groove of the pipe joint to prevent coolant loss and maintain correct system pressure. It is an essential replacement seal used on various Porsche coolant and inlet pipe 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 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 2

What This Product Does:

  • Seals coolant pipe joints to prevent coolant leaks between connected pipes and fittings.
  • Maintains correct cooling system pressure, which is essential for efficient engine temperature control.
  • Creates a tight seal between metal components by compressing inside a groove when the pipe connection is tightened.

Symptoms Of Wear Or Failure:

  • Coolant may seep or drip from the joint where the O-ring seals the connection.
  • A worn O-ring can cause slow coolant loss, leading to frequent topping up.
  • Loss of coolant or system pressure can reduce cooling efficiency and contribute to overheating.
  • A leaking O-ring often produces a noticeable coolant smell near the engine bay.
  • The O-ring may show cracking, flattening (loss of shape), swelling, hardening or brittleness
  • Modern Porsche models may trigger low coolant warnings if leakage occurs.

Why Replacement Matters:

  • Prevents coolant leaks at pipe connections, avoiding coolant loss and contamination.
  • Maintains correct system pressure, which is essential for efficient engine cooling performance.
  • Helps prevent engine overheating, since even a small leak can lead to low coolant levels and temperature rise.
  • Protects surrounding components, as leaking coolant can damage hoses, sensors, connectors, and nearby engine parts.
  • Ensures reliable long-term sealing, since old O-rings harden and flatten over time due to heat and pressure cycles.



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

99970182541
99970182541
99970182540

The product you are viewing cross references to these numbers
Water coolant distributor tube. Porsche 957 Cayenne 2007-10 - 94810606104, 94810606106, 94810606107
2
Water coolant distributor tube. Porsche 957 Cayenne 2007-10
Special Order item
94810606107
Product Information
Product Information
Water coolant distributor tube.

porsche

Fits:
Porsche 957 MKII Cayenne S 4.8L 2007-10
Porsche 957 MKII Cayenne GTS 4.8L 2007-10
Porsche 957 MKII Cayenne Turbo 4.8L 2007-10

Click 'Zoom in' for large parts diagram.
Diagram ref no 1.

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

94810606107
94810606104
94810606106
94810606107

The product you are viewing cross references to these numbers
Water coolant distributor tube. Porsche 957 Cayenne 2007-10 - 94810606104, 94810606106, 94810606107
5
Water coolant distributor tube. Porsche 957 Cayenne 2007-10
94810606107/1
Product Information
Product Information
Water coolant distributor tube.

oematch

Fits:
Porsche 957 MKII Cayenne S 4.8L 2007-10
Porsche 957 MKII Cayenne GTS 4.8L 2007-10
Porsche 957 MKII Cayenne Turbo 4.8L 2007-10

Click 'Zoom in' for large parts diagram.
Diagram ref no 1.

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

94810606107
94810606104
94810606106
94810606107

The product you are viewing cross references to these numbers
Water coolant hose. Porsche 955 / 957 Cayenne - 95510607300
3
Water coolant hose. Porsche 955 / 957 Cayenne
Special Order item
95510607300
Product Information
Product Information

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.



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

95510607300
95510607300

The product you are viewing cross references to these numbers
Water Coolant Hose. Porsche 955 / 957 Cayenne - 95510607300 - 77773
3
Water Coolant Hose. Porsche 955 / 957 Cayenne
95510607300/1
Product Information
Product Information

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.



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

95510607300
95510607300

The product you are viewing cross references to these numbers
DISPLAYING 17 to 22 (of 22 products)
1 2
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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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