Type 25 Water Hose - Water Pump To Double T-Piece - 1980-85 - 1900cc Waterboxer

This replacement rubber coolant hose is designed for VW Type 25 buses fitted with 1900cc petrol Waterboxer engines produced from 1983 to 1985. The hose is located between the expansion tank junction (lower valve area) and the water pump, forming an essential part of the early Waterboxer cooling and pressure-control circuit.

On early 1.9 Waterboxer engines, this hose carries coolant between the expansion tank junction and the water pump, helping regulate coolant flow and system pressure while ensuring air can be properly managed within the cooling system. Because it operates close to the water pump and carries constant coolant flow, the original hose is prone to hardening, cracking, or swelling with age—often resulting in leaks or poor cooling system performance.

This replacement hose is manufactured from high-quality NBR fabric-reinforced rubber and moulded to the exact original shape and specification, ensuring a perfect fit, correct routing, and long service life.

What this hose does and how it works

Coolant from the expansion tank junction flows through this hose into the water pump, where it is circulated throughout the engine and radiator. A sound hose here is vital for:

• Maintaining correct coolant circulation

• Supporting stable system pressure

• Preventing leaks near the water pump

• Ensuring reliable engine temperature control

Fitment

• Vehicle: VW Type 25

• Years: 1983 – 1985

• Engine: 1900cc petrol Waterboxer

• Location: Expansion tank junction (lower valve) to water pump

Engine code compatibility
(Fits from chassis number F24D089113>>)

• DF: 1.9 (03/83 – 07/85)

• DG: 1.9 (03/83 – 07/85)

• DH: 1.9 (03/83 – 06/85)

• EY: 1.9 (03/83 – 07/85)

• GW: 1.9 (03/83 – 06/85)

Quality

• NBR fabric-reinforced rubber

• OE-correct moulded profile

• Resistant to heat, pressure, and coolant exposure

• Designed for long service life in early Waterboxer applications

Fitting notes

• Inspect the expansion tank junction / lower valve for cracks or brittleness

• Check the water pump outlet for corrosion before fitting

• Always replace hose clips if worn or corroded

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

A vital early-model cooling hose that helps keep your 1.9 Waterboxer Type 25 cooling system sealed, properly pressurised, and operating reliably.