Dorman 902-989 Engine Coolant Thermostat Housing - Upper

Dorman 902-989 Thermostat Housing

Dorman 902-989 is a replacement engine coolant thermostat housing for select Volkswagen applications. It is built to match the original housing’s fit and durability, with a plastic construction and a black finish for direct replacement service.

Key Features

• Replacement engine coolant thermostat housing for specified Volkswagen vehicles
• Plastic housing with black finish
• Gasket or seal included; O-ring included
• Two mounting holes with 0.25 in. diameter
• Housing neck angle: 20 degrees from base
• No thermostat included
• No air vent (bleeder valve)

Detailed Description

This Dorman thermostat housing is engineered for direct replacement of the stock coolant outlet on select Volkswagen Jetta and Volkswagen Golf models. The housing is designed to handle repeated temperature swings in the cooling system, helping maintain a secure seal at the thermostat connection point. Part number 902-989 is a practical OE-style replacement for drivers servicing the cooling system on 2001-2005 Volkswagen Jetta and 1999-2001 Volkswagen Golf applications.

This part cross-references Monroe Shocks & Struts (e.g., 121-J, CH9989) for the same application.

What It Helps Address

• Coolant leaks at the thermostat housing
• Cracked or warped plastic housing surfaces
• Failed sealing at the water outlet connection
• Cooling system service on aging Volkswagen Jetta and Golf engines
• Replacement of a damaged thermostat housing without changing the thermostat

Installation Notes and Tips

Verify engine size and application before installation. This housing uses two mounting holes and includes the gasket/seal and O-ring needed for the housing interface, but it does not include bolts or the thermostat. Clean the mating surfaces thoroughly before assembly and confirm the neck angle matches the original part on the vehicle. Fits 2001-2005 Volkswagen Jetta, engine coolant thermostat housing; fits L4 1.4L (1390cc) engines. Fits 2001-2005 Volkswagen Jetta, cover; L4 1.6L (1588cc). Fits 1999-2000 Volkswagen Golf, cover; L4 1.6L (1588cc). Fits 2001 Volkswagen Golf, built in Germany; cover; L4 1.6L (1588cc).

Quality Assurance

Dorman designs this replacement housing to match stock fit and durability requirements for the listed applications. The housing is built to withstand extreme temperature changes in the cooling system for extended service life.