Type 25 Water Hose - Bleeder Valve To Thermostat Housing - 1983-85 - 1900cc Waterboxer

This replacement rubber coolant hose is fitted between the bleed valve and the water pump on early 1900cc petrol Waterboxer engines used in VW Type 25 / T3 buses from 1983 to 1985. It is a critical part of the cooling system bleed circuit, allowing trapped air to escape and ensuring correct coolant circulation during warm-up and servicing.

On early 1.9 Waterboxer engines, this hose links the bleed valve directly to the water pump. Its condition is vital—if the hose hardens, cracks, or swells with age, it can lead to coolant leaks, difficulty bleeding the system, and unstable engine temperatures. Replacing it with a correctly formed hose is essential for reliable cooling performance.

Manufactured from high-quality NBR fabric-reinforced rubber, this hose is moulded to the exact original shape and specification, providing a perfect fit, correct routing, and long service life even in the high-heat environment around the water pump.

What this hose does and how it works

Coolant and trapped air flow from the bleed valve through this hose back to the water pump, allowing the cooling system to purge air effectively. This ensures proper coolant circulation, accurate temperature regulation, and protection against overheating—especially after coolant changes or engine work.

Fitment

• Vehicle: Type 25 / T3

• Years: 1982–1985

• Engine: 1900cc petrol Waterboxer (early engines)

• Application: Bleed valve to water pump

Engine code compatibility

• DF: 1.9 (08/1982 – 07/1985)

• DG: 1.9 (09/1982 – 07/1985)

• DH: 1.9 (01/1983 – 06/1985)

• EY: 1.9 (10/1984 – 07/1985)

• GW: 1.9 (11/1983 – 07/1984)

Quality

• NBR fabric-reinforced rubber

• OE-correct moulded profile

• Designed for long service life and reliable sealing

Fitting notes

• Inspect the bleed valve and water pump outlets for corrosion

• Replace hose clips if worn or corroded

• Refill with the correct coolant and bleed the cooling system thoroughly after installation

An essential early Waterboxer cooling hose that helps ensure easy bleeding, stable temperatures, and dependable engine operation.