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reservoir Genuine Porsche part 92810625603
• This part is brand new and unused.
• Please verify that it is 100% suitable for your specific vehicle before purchase to ensure compatibility.
Before purchasing thoroughly check part to confirm compatibility.
- We are unable to provide fitting details for this product at this time. Please contact us for further information.
Fits:
Porsche 944 1982-85
Porsche 928 1978-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 7.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810625703
The product you are viewing cross references to these numbers
- Porsche 944 2.5L 8V 1982-87
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
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12 Month Warranty
Worldwide Delivery
Fits:
Porsche 928 S4 / GT 1987-95
Click picture for large parts diagram.
Diagram Ref No 2.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810625902
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
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12 Month Warranty
Worldwide Delivery
Fits:
Porsche 928 1987-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 26.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810622700
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
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12 Month Warranty
Worldwide Delivery
Radiator Coolant Top Hose
The OE Match Radiator Coolant Top Hose is a replacement
upper radiator hose for Porsche 928 models manufactured between 1985 and 1995.
Fits:
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Diagram ref no 19
Designed to maintain coolant circulation between the engine and radiator, this hose helps regulate engine temperature and prevent overheating.
Over time, original coolant hoses can become brittle, swollen or cracked due to constant exposure to heat, pressure and coolant.
Replacing a deteriorated hose helps maintain cooling system reliability and reduces the risk of coolant leaks or engine overheating.
What Does It Do?
The upper radiator hose carries hot coolant from the engine towards the radiator, where heat is removed before the coolant circulates back through the cooling system.
It plays an essential role in maintaining the correct engine operating temperature.
Why Does It Fail?
Common causes of failure include:
- Age-related rubber deterioration
- Cracking caused by repeated heat cycles
- Swelling or softening from coolant contamination
- Excessive cooling system pressure
- Damage around hose connections
- General wear after prolonged use
When Should It Be Replaced?
Replace the hose if you notice:
- Visible cracks or splits
- Coolant leaks around the hose or connections
- Swollen, soft or hardened rubber
- Coolant loss or overheating
- Damage discovered during cooling system maintenance
Inspect the hose regularly, particularly on older Porsche 928 models.
Installation Notes
Allow the engine to cool completely before removing the original hose. Inspect the hose connections and clips, replacing damaged clamps where necessary.
Refill the cooling system with the correct coolant mixture, bleed according to Porsche workshop instructions and check for leaks.
Porsche 928 Radiator Hoses & Cooling System Parts
The Porsche 928 cooling system relies on correctly functioning radiator hoses to circulate coolant and maintain stable engine temperatures.
OE Match radiator coolant top hose 92810623808 provides a replacement for compatible Porsche 928 models from 1985 to 1995, helping prevent coolant leaks and maintain reliable engine cooling.
Design911 supplies Porsche 928 radiator hoses, coolant pipes, thermostats, water pumps and associated cooling system components.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810623808
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 928 1985-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810623808
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 928 1987-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 15
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810623909
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Shop Securely
12 Month Warranty
Worldwide Delivery
Radiator Coolant Bottom Hose
The OE Match Radiator Coolant Bottom Hose is a replacement
lower radiator hose designed for Porsche 928 models manufactured between 1987
and 1995.
Fits:
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Diagram Ref No 15
This hose forms an essential part of the engine cooling system, carrying cooled coolant from the radiator towards the engine to help maintain the correct operating temperature.
Over time, original radiator hoses can become brittle, swollen or cracked due to constant exposure to heat, pressure and coolant.
Replacing a deteriorated bottom radiator hose helps prevent coolant leaks, overheating and potential engine damage.
What Does It Do?
The lower radiator hose carries coolant from the radiator back towards the engine, allowing it to circulate through the cooling system.
It helps maintain consistent coolant flow and stable engine temperatures during normal driving and demanding operating conditions.
Why Does It Fail?
Common causes of failure include:
- Age-related rubber deterioration
- Cracking from repeated heating and cooling
- Swelling or softening caused by coolant contamination
- Excessive cooling system pressure
- Damage around hose connections
- General wear after prolonged use
When Should It Be Replaced?
Replace the hose if you notice:
- Visible cracks, splits or bulges
- Coolant leaks around the hose connections
- Soft, swollen or hardened rubber
- Unexplained coolant loss
- Engine overheating
- Deterioration discovered during cooling system servicing
Installation Notes
Allow the engine to cool completely before removing the original hose. Inspect the radiator connections and hose clamps, replacing worn components where necessary.
Refill the cooling system with the correct coolant mixture, bleed according to Porsche workshop instructions and check for leaks.
Porsche 928 Radiator Hoses & Cooling System Parts
The Porsche 928 cooling system relies on correctly functioning radiator hoses to maintain efficient coolant circulation and prevent overheating.
OE Match radiator coolant bottom hose 92810623909 provides a replacement for compatible Porsche 928 models from 1987 to 1995, helping restore cooling system reliability.
Design911 supplies Porsche 928 upper and lower radiator hoses, coolant pipes, thermostats, water pumps and associated cooling system components.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810623909
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 944 1982-85
Porsche 928 1978-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 7.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810625703
The product you are viewing cross references to these numbers
- Porsche 944 2.5L 8V 1982-87
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Shop Securely
12 Month Warranty
Worldwide Delivery
Replacement hose for the upper radiator hose used in Porsche 928 models. It connects the radiator to the temperature regulator (thermostat/expander) housing, which is part of the engine cooling system. It ensures proper coolant flow between the radiator and engine, supporting precise temperature control.
Fits:
Porsche 928 1978 - 1984
Diagram ref no 19
• Location: Upper radiator hose — radiator to thermostat / water-regulator housing
• Use Case: Replacement during maintenance, cooling system overhaul, or when hose shows leak, age or wear
Manufactured to the original dimensions, inside diameter, and hose shape, this replacement hose ensures a proper fit and reliable seal without the need for modification. Made of high-quality, heat-resistant rubber, it withstands engine temperatures, pressure cycles, and coolant exposure, ensuring reliable, long-lasting performance.
This hose is especially useful when the original hose becomes brittle, cracked, swollen, or leaking, which are common problems in older cooling systems. Installing a new hose helps prevent coolant leaks, overheating, and potential engine damage.
Hoses degrade over time due to heat, coolant chemicals, age, and repeated expansion / contraction. A failing radiator hose can lead to:
• Coolant leaks under bonnet or beneath car
• Engine overheating or overheating under heavy load
• Loss of coolant pressure or coolant circulation
• Risk of engine damage due to poor cooling
Replacing it with a correctly spec’d hose helps maintain coolant circulation, prevents leaks, and safeguards the engine’s cooling system reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810623806
The product you are viewing cross references to these numbers
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Shop Securely
12 Month Warranty
Worldwide Delivery
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed