Dorman 902-956 Engine Coolant Thermostat Housing - Water Pump

Engine Coolant Thermostat Housing for Volkswagen

Dorman 902-956 is a replacement engine coolant thermostat housing built to match the fit and durability of the original housing on specified Volkswagen applications. It is made from black plastic and includes the gasket/seal and O-ring needed for a proper cooling system seal.

Compatible With Volkswagen Cabrio, Golf, Jetta, Passat, and Derby water pump thermostat housing applications across select 1993-2008 model years, this Dorman thermostat housing is designed for direct replacement service where the factory housing has cracked, warped, or begun leaking. The 90-degree housing neck from base supports the original cooling system layout.

Key Features

• Replacement engine coolant thermostat housing for select Volkswagen cooling systems
• Black plastic construction for OE-style fit and function
• Gasket/seal included for sealing at the mounting surface
• O-ring included for the water outlet connection
• 90-degree housing neck from base
• Two mounting holes with 0.4 diameter openings
• No thermostat included
• No bleeder valve and no bolts included

Detailed Description

Dorman 902-956 is engineered as a direct-fit coolant thermostat housing for Volkswagen Cabrio, Golf, Jetta, Passat, and Derby models listed in the fitment data. It is a practical replacement for a damaged or leaking thermostat housing in the water pump area, helping restore proper coolant routing and sealing in the engine cooling system. This part cross-references URO 037121121A for the same application.

Common Repair Issues

• Coolant leaks at the thermostat housing
• Cracked or warped plastic housing
• Failed sealing surface at the water outlet
• Cooling system service on Volkswagen Cabrio, Golf, Jetta, Passat, or Derby
• Replacement of a worn water pump-side thermostat housing

Installation Notes and Tips

• Verify engine code and fitment before installation, especially on Volkswagen Golf, Jetta, and Passat applications.
• Inspect the mating surface and coolant hoses for wear before reassembly.
• Use the included gasket/seal and O-ring to help achieve a proper seal.
• Transfer any required components from the original cooling system setup, since bolts are not included.
• Refill and bleed the cooling system according to the vehicle service procedure after installation.

Quality Assurance

Dorman designs this replacement thermostat housing to match the fit and durability of the stock part on specified vehicles and to withstand extreme temperature changes for extended service life.