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Radiator Top / Bottom Hoses
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Fits:
Porsche 958 Cayenne 3.0L Diesel >>2011
Click 'Zoom in' for large parts diagram.
Diagram ref no 33
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810652100
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
This genuine Porsche radiator coolant hose serves as a return line in the cooling system, carrying coolant back toward the radiator after it has circulated through the engine and absorbed heat. By ensuring proper coolant routing and flow, the hose supports efficient heat dissipation, helps maintain stable engine temperatures, and reduces the risk of overheating, especially under load or in prolonged driving conditions.
Fits:
Porsche 958 Cayenne 3.0L Diesel 2012 - 2018
* PR:D43, D1V, D50, D51, DV7
Diagram ref no 21
The Porsche Genuine OE Radiator Coolant Return Hose 95810640250 is an essential cooling system component for the Porsche Cayenne 958 3.0 L Diesel (2012–2018). It ensures coolant is reliably returned to the radiator after heat exchange in the engine, helping maintain proper operating temperature and prevent overheating. As a factory-specified Porsche part, it offers correct dimensions, quality materials, and dependable performance matched to the original design.
Fitment / Position on Car
• Installed on: Engine cooling circuit return pathway
• Location: Between engine coolant outlets and the radiator inlet
• System interface: Works in conjunction with upper and lower radiator hoses, thermostat connections, and coolant pipes to complete the cooling loop
Coolant hoses and return lines operate under constant heat, pressure and vibration. Over time, aging hoses can become brittle, crack, swell, or leak, leading to coolant loss and potential engine overheating. Installing a genuine Porsche OE coolant return hose ensures the correct material formulation and engineered fit, helping preserve cooling system integrity and long-term engine reliability - exactly as Porsche originally intended.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810640250
The product you are viewing cross references to these numbers
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
This Porsche Genuine OE upper radiator coolant hose carries engine coolant between the radiator and engine at the top of the cooling circuit. It ensures reliable coolant flow from the engine into the radiator where heat is dissipated, helping maintain stable operating temperatures and preventing overheating.
Fits:
Porsche 958 Cayenne 3.0L Diesel 2012 - 2018
* PR:D43, D1V, D50
Diagram ref no 19
The Porsche Genuine OE Upper Radiator Coolant Hose 95810640140 is a vital cooling-system component for the Porsche Cayenne 3.0 L Diesel (958), ensuring proper flow of coolant into the radiator. Its Porsche-specified design, fit, and materials help preserve engine thermal stability, support reliable performance, and maintain correct factory coolant routing.
Fitment / Position on Car
• Installed on: Upper section of the engine cooling system
• Location: Between the top radiator outlet and corresponding engine coolant inlet
• System interface: Works with radiator, thermostat housing, coolant pipes, and clamps to complete the cooling loop
Coolant hoses are exposed to high heat, pressure, and vibration over time, which can cause swelling, cracking, or leaks. A failed upper radiator hose can lead to coolant loss and engine overheating, risking serious engine damage. Using a fresh hose ensures the correct material formulation, dimensions, and durability - delivering long-lasting performance and peace of mind.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95810640140
The product you are viewing cross references to these numbers
Radiator Top & Bottom Hoses – Reliable Cooling for Porsche Performance
Radiator top and bottom hoses are vital components of your Porsche’s cooling system, responsible for transporting coolant between the radiator and the engine. The top hose carries hot coolant from the engine to the radiator for cooling, while the bottom hose returns the cooled fluid back to the engine, maintaining optimal operating temperatures for performance, efficiency, and reliability.
At Design911, we offer a full range of genuine and manufacturer-quality radiator top and bottom hoses for Porsche models including 911, Boxster, Cayman, Cayenne, Macan, and Panamera. Each hose is precision-engineered for perfect fitment, high pressure tolerance, and exceptional heat resistance — ensuring reliable cooling under the most demanding driving conditions.
What Do Radiator Top and Bottom Hoses Do?
Coolant hoses are the lifelines of your Porsche’s cooling
system, and the radiator hoses perform the following key functions:
- Carry
coolant between the radiator and the engine.
- Regulate
engine temperature for consistent performance.
- Maintain
coolant pressure throughout the cooling circuit.
- Prevent overheating by ensuring efficient heat transfer.
Both the top and bottom hoses are designed to withstand high heat, vibration, and coolant pressure, providing dependable performance in every driving scenario.
Why Do Radiator Hoses Fail?
Over time, radiator hoses deteriorate due to heat, pressure,
and exposure to coolant. Common causes of hose failure include:
- Rubber
cracking or hardening from continuous heat cycles.
- Swelling
or soft spots due to coolant chemical breakdown.
- Leaks
at hose ends or clamps from pressure loss.
- Abrasion
damage caused by engine vibration or contact.
- Age-related material fatigue, especially in older vehicles.
Symptoms of hose failure include coolant leaks, visible cracks or bulges, fluctuating engine temperature, or a noticeable coolant smell in the engine bay.
Why Replace Faulty Radiator Hoses?
A leaking or weakened radiator hose can lead to overheating, coolant loss, and potential engine damage. Replacing these hoses as part of routine maintenance ensures consistent cooling performance and reliability.
Benefits of replacement include:
- Restored coolant flow and temperature stability.
- Prevention of leaks and overheating.
- Improved cooling system pressure and performance.
- Manufacturer-quality materials for long-term durability.
All radiator hoses in this range are made using reinforced, high-grade rubber and polymer compounds, designed to meet or exceed factory specifications for heat resistance, flexibility, and longevity.
