Radiator Top / Bottom Hoses

Water coolant top hose - return



Fits:
Porsche 958 Cayenne S / GTS 4.8ltr V8 - 2010 to 2017
Porsche 958 Cayenne turbo / turbo S - 2010 to 2017

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Diagram ref no 13

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95810640100

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Water coolant top hose, supply.
This genuine Porsche water coolant top hose is designed to maintain correct hose routing, fitment, and material performance in the engine cooling system of high-performance Porsche Cayenne V8 models.

Fits:
Porsche 958 Cayenne S / GTS 4.8ltr V8 - 2010 to 2017
Porsche 958 Cayenne turbo / turbo S - 2010 to 2017

Diagram ref no 11

This hose serves as the top supply line in the cooling system, carrying engine coolant from the engine to the radiator (or between key cooling components) under pressure. It ensures reliable coolant flow and temperature management so the engine stays within its optimal operating range.

Fitment / Position on Car
•  Installed on: Engine cooling system, as the upper supply hose
•  Location: Between the engine’s outlet and the radiator inlet / supply path in the cooling circuit
•  Role: Helps carry hot coolant out of the engine toward the radiator’s heat exchange core

Coolant hoses are exposed to heat, pressure, and vibration every time the engine runs. Over time, these stresses can cause hoses to crack, soften, or leak - potentially leading to overheating and engine damage. Installing a genuine Porsche OE hose like the 95810640200 ensures correct material and fit quality, preserving engine cooling performance and system reliability exactly as Porsche intended.

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95810640200

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Water Coolant Top Hose Supply.

Maintain reliable engine cooling performance with the Water Coolant Top Hose Supply. This OE MATCH upper supply hose is designed to deliver coolant to key cooling system components, ensuring proper circulation and effective temperature regulation.

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

Diagram Ref No 11 

What This Product Does:

• Supplies coolant to critical cooling system components
• Maintains proper coolant circulation
• Supports heat transfer and temperature regulation
• Helps prevent overheating by ensuring steady coolant flow
• Contributes to overall cooling system efficiency

Symptoms Of Wear Or Failure:

• Coolant leaks in the engine bay or under the vehicle
  
• Low coolant warning light
• Frequent coolant top-offs
• Engine overheating or rising temperature gauge
  
• Sweet coolant smell from the engine compartment
  
• Steam from under the hood in severe cases
  
• Cracks, splits, or dry rot on the hose surface
  
• Bulging or swelling due to internal weakening
  
• Soft, spongy, or brittle hose texture
• Coolant residue or dampness around hose clamps or fittings
  
  

Why Replacement Matters:

• Replacing a worn top coolant supply hose is important because it ensures coolant is delivered properly throughout the engine cooling system. Over time, heat and pressure can weaken the hose, leading to cracks, leaks, or sudden failure.
• If the hose fails, coolant loss can reduce circulation and cause the engine to overheat, potentially leading to serious and costly engine damage. Even small leaks can lower coolant levels and reduce cooling efficiency.
• Installing a new hose helps prevent leaks, restores reliable coolant flow, and protects the engine by maintaining proper cooling system performance.

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95810640200

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Water coolant top hose, return.



Fits:
Porsche 958 Cayenne 3.0L 2011-18
Porsche 958 Cayenne 3.0L Hybrid >>2014

Click 'Zoom in' for large parts diagram.
Diagram ref no 17

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95810640120

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Water coolant top hose, return.



Fits:
Porsche 958 Cayenne 3.0L 2011-18
Porsche 958 Cayenne 3.0L Hybrid >>2014

Click 'Zoom in' for large parts diagram.
Diagram ref no 17

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95810640120

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Water coolant top hose (complete).



Fits:
Porsche 958 Cayenne 3.6L  2011-18

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Diagram ref no 10

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95810640111

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Water coolant top hose (complete).



Fits:
Porsche 958 Cayenne 3.6ltr - 2011 to 2018

Click 'Zoom in' for large parts diagram.
Diagram ref no 10

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95810640111

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Water hose, supply.
This 95810640220 OE return coolant hose is designed for the Porsche Cayenne 958 Hybrid equipped with the 3.0 L V6 hybrid powertrain produced before 2014 (model years 2011–2014). It forms part of the main cooling system, specifically routing coolant in the lower/return portion of the circuit associated with the radiator.

Fits:
Porsche 958 Cayenne 3.0L Hybrid >> 2014

Diagram ref no 12

This genuine Porsche hose functions as a return line within the engine’s cooling system, carrying coolant back toward the radiator after it has circulated through the engine and absorbed heat. As part of the closed coolant circuit, it helps regulate engine temperature by ensuring efficient coolant flow - aiding heat exchange and preventing overheating under normal and high-load driving conditions. Its factory-matched design resists heat, pressure, and vibration typical of SUV cooling systems.

Fitment / Position on Car
•  Installed on: Engine cooling return pathway
• Location: Connects radiator system return lines toward the main radiator inlet / network
•  System interface: Works alongside upper/lower hoses, thermostat housings, coolant pipes and radiator fittings to ensure continuous coolant flow throughout the circuit.

Coolant hoses operate under constant stress from heat, pressure, and engine bay vibration. Over time, hoses can deteriorate, resulting in cracks, swelling, leaks, or failure - all of which can lead to coolant loss and overheating. Choosing a genuine Porsche OE hose ensures the correct material, fit, and durability that matches factory specifications, preserving cooling system integrity and helping prevent costly engine damage.

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95810640220

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Water Hose, Supply. 

Ensure reliable cooling system performance with the Water Hose, Supply. This OE MATCH supply hose is designed to deliver coolant to key engine cooling components, supporting consistent circulation and effective heat management.

Fits:

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

Diagram Ref No 12

What This Product Does:

• Supplies coolant to cooling system components
• Maintains continuous coolant circulation
• Supports proper heat transfer and engine temperature control
• Helps prevent overheating by ensuring consistent coolant delivery
• Contributes to overall cooling system efficiency

Symptoms Of Wear Or Failure:

• Coolant leaks in the engine bay or under the vehicle
  
• Low coolant warning light
• Frequent coolant top-offs
• Engine overheating or rising temperature gauge
  
• Sweet coolant smell from the engine compartment
  
• Steam from under the hood in severe cases
  
• Cracks, splits, or dry rot on the hose surface
  
• Bulging or swelling due to internal weakening
  
• Soft, spongy, or brittle hose texture
• Coolant residue or dampness around hose clamps or fittings
  
  

Why Replacement Matters:

• Replacing a worn water supply hose is essential to maintaining proper coolant delivery within the engine cooling system. Over time, heat, pressure, and coolant exposure can cause the hose to weaken, crack, or leak.
• If the hose fails, coolant flow to critical components may be reduced or lost, leading to overheating and potential engine damage. Even small leaks can lower coolant levels and reduce cooling efficiency.
• Installing a new hose helps restore reliable coolant circulation, prevent leaks, and protect the engine from costly overheating-related repairs.

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95810640220

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Water hose, supply.
This flexible coolant return hose is a genuine Porsche part designed for precision fitment, long-lasting durability, and reliable service in the engine cooling circuit of hybrid-equipped Cayenne models. This radiator coolant return hose is specified for use on the Porsche 958 Cayenne Hybrid, especially models equipped with the 3.0 L V6 hybrid powertrain produced approximately 2015 to 2018, where it forms part of the main radiator coolant system.

Fits:
Porsche 958 Cayenne 3.0L Hybrid  2015 - 2018

Diagram ref no 12

This coolant return hose plays a vital role in the engine’s liquid cooling system by routing coolant back toward the radiator after it has circulated through components such as the engine block and auxiliary coolers. Proper routing and leak-resistant sealing ensure that the cooling system maintains correct flow and pressure, helping the engine operate within optimal temperature limits and reducing the risk of overheating under typical driving conditions and higher loads.

Fitment / Position on Car
•  Installed on: Engine cooling return pathway
• Location: Connects radiator system return lines toward the main radiator inlet / network
•  System interface: Works alongside upper/lower hoses, thermostat housings, coolant pipes and radiator fittings to ensure continuous coolant flow throughout the circuit.

Coolant hoses operate under continuous thermal stress, pressure fluctuations, and vibration. Over time, hoses can soften, crack, or start leaking, leading to coolant loss and potential engine overheating. Using a genuine Porsche OE return hose ensures the correct hose design, material formulation, and connections - preserving cooling system integrity and performance. This helps maintain consistent engine temps, protects internal components from thermal stress, and supports overall engine durability.

Related reference numbers
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95810640221

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Water hose, supply.

The Water Hose, Supply is a genuine Porsche cooling system hose designed to supply coolant through the engine cooling circuit. This hose carries coolant from one cooling system component to another, ensuring consistent circulation and maintaining safe engine operating temperatures.

Fits:

• Porsche 958 Cayenne S V6 3.0L Hybrid (380Hp) 2015-18

Diagram Ref No 12

What This Product Does:

• Delivering coolant through the cooling system supply circuit
• Maintaining stable coolant flow and system pressure
• Supporting engine temperature regulation
• Helping prevent overheating under load
• Ensuring efficient cooling system performance

Symptoms Of Wear Or Failure:

• Coolant leaks or puddles beneath the vehicle
• Cracked, split, swollen, or brittle hose material
• Coolant smell from the engine bay
• Low coolant warning light
• Rising engine temperature or overheating
• Steam from the engine bay
• Coolant residue or staining around hose connections

Why Replacement Matters:

• Prevent sudden coolant loss and breakdowns
• Maintain proper coolant flow and pressure
• Protect the engine from overheating and costly repairs
• Restore reliable cooling system operation
• Reduce the risk of further damage to connected cooling components

Related reference numbers
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95810640221

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Water radiator hose complete.



Fits:
Porsche 958 Cayenne 3.0L (petrol) >>2012
Porsche 958 Cayenne 3.0L HYBRID >>2012

Click 'Zoom in' for large parts diagram.
Diagram ref no 7

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95810631021

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