Radiator coolant bottom hose. Porsche 928 87-95  ›  92810623909

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

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