Dorman 902-911 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for Volkswagen

Dorman 902-911 is a replacement engine coolant thermostat housing built to match the fit and durability of the original housing on specified vehicles. It is made for Volkswagen Golf, Jetta, and R32 applications and is engineered to handle repeated temperature swings in the cooling system.

• Plastic housing with a black finish
• Outlet port diameter: 1.25 in.
• Perpendicular-to-base neck angle
• Gasket or seal included
• O-ring included
• Three mounting holes with 0.313 in. diameter
• No thermostat included
• No bleeder valve and no bolts included

Fitment and Application Details

Compatible with 1999-2005 Volkswagen Golf, 1999-2002 Volkswagen Jetta, and 2003 Volkswagen R32 cooling system applications. This Dorman 902-911 thermostat housing is a direct replacement water outlet for vehicles that need a serviceable housing with the correct outlet size and mounting layout. It cross-references Beck/Arnley 147-0050 and Gates CO34816 for the same application.

What This Part Helps Address

• Coolant leaks at a cracked or warped thermostat housing
• Overheating caused by a damaged water outlet connection
• Coolant loss from worn sealing surfaces or failed O-ring sealing
• Cooling system service on Volkswagen Golf, Jetta, or R32 models
• Replacement of a brittle plastic housing exposed to heat cycling

Installation Notes and Tips

Verify the outlet port diameter, mounting hole layout, and housing neck angle before installation. Transfer the thermostat only if your service procedure requires it, since this housing does not include a thermostat. Replace the seal surfaces as needed and confirm the cooling system is properly filled and bled after installation.

Quality Assurance

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