Engine Block Hoses

The Coolant Breather Line, Rear is a genuine Porsche cooling system component designed to allow controlled ventilation within the rear section of the engine’s coolant circuit. This breather line helps release trapped air from the cooling system, ensuring smooth and consistent coolant circulation.
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

• Allowing trapped air to escape from the coolant circuit
• Preventing air pockets within the cooling system
• Supporting consistent coolant flow
• Maintaining correct system pressure balance
• Helping ensure stable engine operating temperature

• Coolant leaks near the rear of the engine
• Visible cracks, brittleness, or splits in the line
• Coolant smell from the engine bay
• Low coolant warning light
• Air in the cooling system after bleeding
• Fluctuating engine temperature
• Overheating due to trapped air pockets

• Maintain proper coolant circulation
• Prevent air pockets and overheating
• Ensure stable system pressure
• Avoid coolant loss and breakdowns
• Protect the engine from costly heat damage

The Coolant Breather Line, Rear is a OE MATCH cooling system component designed to allow controlled ventilation within the rear section of the engine’s coolant circuit. This breather line helps release trapped air from the cooling system, ensuring smooth and consistent coolant circulation.
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

• Allowing trapped air to escape from the coolant circuit
• Preventing air pockets within the cooling system
• Supporting consistent coolant flow
• Maintaining correct system pressure balance
• Helping ensure stable engine operating temperature

• Coolant leaks near the rear of the engine
• Visible cracks, brittleness, or splits in the line
• Coolant smell from the engine bay
• Low coolant warning light
• Air in the cooling system after bleeding
• Fluctuating engine temperature
• Overheating due to trapped air pockets

• Maintain proper coolant circulation
• Prevent air pockets and overheating
• Ensure stable system pressure
• Avoid coolant loss and breakdowns
• Protect the engine from costly heat damage

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

Fits:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Its primary functions include:

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

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

Typical symptoms:

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

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

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

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-14

• Carries coolant through the engine cooling system
• Regulates coolant flow to the heater core
• Controls cabin heating output
• Maintains stable engine operating temperature
• Supports efficient HVAC and cooling system performance

• Coolant leaks near the hose or valve assembly
  
• Low coolant warning light
• Frequent coolant top-offs
• Engine overheating if coolant flow is restricted
  
• Sweet coolant smell from the engine bay
  
• Steam from under the hood in severe cases
  
• Weak, inconsistent, or no cabin heat
• Heater stuck on hot or cold due to valve malfunction
  
• Cracked, brittle, or swollen hose material
• Coolant residue around the valve or hose connections
  
  

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2010-14

• Carries coolant through the engine cooling system
• Regulates coolant flow to the heater core
• Controls cabin heating output
• Maintains stable engine operating temperature
• Supports efficient HVAC and cooling system performance

• Coolant leaks near the hose or valve assembly
  
• Low coolant warning light
• Frequent coolant top-offs
• Engine overheating if coolant flow is restricted
  
• Sweet coolant smell from the engine bay
  
• Steam from under the hood in severe cases
  
• Weak, inconsistent, or no cabin heat
• Heater stuck on hot or cold due to valve malfunction
  
• Cracked, brittle, or swollen hose material
• Coolant residue around the valve or hose connections
  
  

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

• Carries coolant between cooling system components
• Uses a vacuum valve to control coolant routing or flow
  
• Helps maintain stable engine operating temperature
• Improves cooling system efficiency based on engine conditions
• Supports proper heat management and prevents overheating

• Coolant leaks near the hose or valve assembly
  
• Low coolant warning light
• Frequent coolant top-offs
• Engine overheating or rising temperature gauge
  
• Coolant residue or dampness around valve connections
  
• Sweet coolant smell from the engine bay
  
• Cracked, swollen, or brittle hose material
• Valve not opening/closing properly, affecting coolant circulation
  
• Erratic engine temperature changes
• Poor heating or cooling system performance
• Vacuum-related fault codes / check engine light (in some cases)
  
  

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

• Carries coolant between cooling system components
• Uses a vacuum valve to control coolant routing or flow
  
• Helps maintain stable engine operating temperature
• Improves cooling system efficiency based on engine conditions
• Supports proper heat management and prevents overheating

• Coolant leaks near the hose or valve assembly
  
• Low coolant warning light
• Frequent coolant top-offs
• Engine overheating or rising temperature gauge
  
• Coolant residue or dampness around valve connections
  
• Sweet coolant smell from the engine bay
  
• Cracked, swollen, or brittle hose material
• Valve not opening/closing properly, affecting coolant circulation
  
• Erratic engine temperature changes
• Poor heating or cooling system performance
• Vacuum-related fault codes / check engine light (in some cases)
  
  

The Coolant Hose With Valve is a genuine Porsche cooling system component designed to control and direct coolant flow through the engine cooling circuit. This assembly includes an integrated valve, allowing regulated coolant circulation depending on engine temperature and system demand.
Fits:

• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17

• Carrying coolant between cooling system components
• Regulating coolant flow using the integrated valve
• Supporting correct engine warm-up and temperature control
• Maintaining stable cooling system pressure
• Helping prevent overheating under load

• Coolant leaks around the hose or valve housing
• Cracks, swelling, or splitting in the hose material
• Sticking or faulty valve operation
• Engine overheating or fluctuating temperature readings
• Low coolant warning light or repeated coolant loss
• Coolant smell in the engine bay
• Poor cabin heater performance (in some cases)
• Visible coolant residue around connections

• Restore correct coolant flow and pressure
• Prevent overheating and temperature instability
• Reduce risk of sudden coolant loss and breakdown
• Protect engine components from heat damage
• Maintain reliable cooling system performance

The Coolant Hose With Valve is a OE MATCH cooling system component designed to control and direct coolant flow through the engine cooling circuit. This assembly includes an integrated valve, allowing regulated coolant circulation depending on engine temperature and system demand.
Fits:

• Porsche 958 Cayenne V6 3.6L Petrol (300Hp) 2010-17

• Carrying coolant between cooling system components
• Regulating coolant flow using the integrated valve
• Supporting correct engine warm-up and temperature control
• Maintaining stable cooling system pressure
• Helping prevent overheating under load

• Coolant leaks around the hose or valve housing
• Cracks, swelling, or splitting in the hose material
• Sticking or faulty valve operation
• Engine overheating or fluctuating temperature readings
• Low coolant warning light or repeated coolant loss
• Coolant smell in the engine bay
• Poor cabin heater performance (in some cases)
• Visible coolant residue around connections

• Restore correct coolant flow and pressure
• Prevent overheating and temperature instability
• Reduce risk of sudden coolant loss and breakdown
• Protect engine components from heat damage
• Maintain reliable cooling system performance

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

Fits:

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Its main functions include:

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

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

Typical symptoms:

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

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

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

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

• 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 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  

• Feeds engine coolant between cooling system components such as the engine, radiator, and expansion/overflow tank.
• Helps maintain proper coolant circulation, which is essential for controlling engine temperature.
  
• Supports overheating prevention by ensuring coolant flows efficiently through the system.
  
• Provides a flexible connection that absorbs engine movement and thermal expansion without stressing rigid pipes.
  
  

• Prevents coolant leaks that can cause low coolant levels and loss of pressure.
  
• Helps avoid engine overheating, which can lead to severe and expensive engine damage.
  
• Restores proper coolant circulation, ensuring the cooling system performs efficiently under all conditions.
  
• Maintains reliable heater performance, since cabin heating depends on correct coolant flow.
  
• Protects other cooling components, as leaks can introduce air into the system and increase strain on hoses, seals, and the water pump.