T4,T5 Thermostat Housing - VR6 (AMV,BKK)

This replacement thermostat housing is designed for Volkswagen VR6 petrol engines, specifically the 2.8 VR6 AMV fitted to late T4 Transporters and the 3.2 VR6 BKK engines used in early T5 Transporters. Supplied complete with a sealing gasket, this housing is a direct replacement for the original unit and restores correct coolant flow and temperature regulation.

What this part does

The thermostat housing contains the engine thermostat and acts as a central junction for coolant flow within the cooling system. It controls when coolant is allowed to circulate through the radiator, ensuring the engine warms up quickly from cold and then maintains a stable operating temperature. Cracked or warped housings can cause coolant leaks, overheating, or inaccurate temperature readings.

How it works

When the engine is cold, the thermostat remains closed, allowing coolant to circulate only within the engine for faster warm-up. As operating temperature is reached, the thermostat opens, directing coolant through the radiator to dissipate heat. This housing features two thermal switch connectors, allowing accurate monitoring and control of engine temperature systems such as cooling fans and dashboard temperature signals.

Key features

• Designed for VR6 2.8 and 3.2 petrol engines

• Two thermal switch connectors for correct sensor fitment

• Supplied with new sealing gasket

• Direct-fit replacement for original housing

• Helps prevent coolant leaks and overheating issues

Vehicle compatibility

• Volkswagen T4 Transporter

  • 2.8 VR6 petrol engines

  • Engine code: AMV

  • Model years: 1999–2003

• Volkswagen T5 Transporter

  • 3.2 VR6 petrol engines

  • Engine code: BKK

  • Model years: 2003–2007

Fitting notes

• Always fit the new seal provided

• Inspect the thermostat and temperature sensors during installation

• Coolant system should be refilled with the correct specification coolant and properly bled after fitting

This thermostat housing is an essential replacement component for maintaining correct engine temperature control and long-term reliability in VR6-powered Transporters.