Dorman 902-951 Engine Coolant Thermostat Housing - Lower or Outer

Engine Coolant Thermostat Housing for VW Cooling Systems

Dorman 902-951 is a replacement engine coolant thermostat housing for specified Volkswagen applications. It is built to match the original housing’s fit and durability, with a plastic construction and a black finish for direct cooling system service.

Key Features

• Plastic thermostat housing with black finish
• Gasket or seal included for installation
• Three mounting holes with 0.313 in. diameter
• 90-degree housing neck angle from the base
• No bleeder valve, no thermostat, and no bolts included
• Engineered to handle repeated temperature swings in the cooling system

Detailed Description

This Dorman engine coolant thermostat housing is made for Volkswagen EuroVan, Golf, Jetta, Passat, and Corrado cooling system service where the lower thermostat housing or water outlet needs replacement. The housing is designed to match the stock part’s fit and function, helping restore a secure coolant connection at the thermostat location. Part number 902-951 is a direct-fit replacement for specified VW models, including applications where the original lower housing has cracked, warped, or leaked.

This part cross-references Four Seasons 85159 for the same application.

What It Helps Fix

• Coolant leaks at the thermostat housing
• Cracked or heat-damaged plastic housing
• Warped sealing surface causing seepage
• Failed lower water outlet on VW cooling systems
• Loss of proper coolant routing at the thermostat location

Installation Notes and Fitment

• Fits 1999-2000 Volkswagen EuroVan, lower
• Fits 1997 Volkswagen EuroVan, lower
• Fits 1999 Volkswagen Golf, lower, built in Mexico; cover
• Fits 1995-1998 Volkswagen Golf, lower
• Fits 1999 Volkswagen Jetta, lower, built in Mexico; cover
• Fits 1994-1998 Volkswagen Jetta, lower
• Fits 1993-1997 Volkswagen Passat, lower
• Fits 1992-1995 Volkswagen Corrado, outer

Verify the mounting style, position, and engine coolant routing before installation. The housing uses three mounting points and includes a gasket or seal, but does not include bolts, O-rings, or a thermostat. Confirm the 90-degree neck orientation matches the original part before assembly.

Quality Assurance

Dorman designs this replacement thermostat housing to match the fit and durability of the original equipment housing on specified Volkswagen vehicles. The material selection is intended to withstand repeated temperature changes in the cooling system for dependable service.