Dorman 902-2037 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing for GM Cooling Systems

Dorman 902-2037 is a replacement engine coolant thermostat housing built to match the fit and durability of the original housing on specified vehicles. It uses a metal housing body with a natural finish, a gasket included, and an integrated air vent (bleeder valve) to support proper cooling system service on applications such as Chevrolet Cavalier, Corsica, Celebrity, and Pontiac Sunbird.

Key Features

• Metal thermostat housing for cooling system service
• Natural finish with 180-degree housing neck angle
• Outlet port diameter: 1.25 in.
• Gasket or seal included; thermostat not included
• Two mounting holes with 0.313 in. mounting hole diameter
• Air vent (bleeder valve) included for coolant bleeding
• Package contents: thermostat housing with gasket

Detailed Description

This Dorman thermostat housing, part number 902-2037, is made for vehicles that use a metal coolant outlet housing in the engine cooling system. The housing is engineered to match stock fitment and withstand repeated temperature swings, helping maintain a secure seal at the thermostat connection. It cross-references AMS Automotive 6236 and Four Seasons 84996 for the same application. Compatible vehicle coverage includes 1987-1994 Chevrolet Cavalier, 1991-1994 Pontiac Sunbird, 1987-1993 Chevrolet Corsica, 1987-1991 Pontiac 6000, 1987-1990 Chevrolet Celebrity, 1987-1989 Buick Century, 1987-1989 Oldsmobile Cutlass Ciera, 1987-1989 Oldsmobile Cutlass Cruiser, 1987-1988 Cadillac Cimarron, and 1987 Oldsmobile Firenza.

What It Helps Fix

• Coolant leaks at the thermostat housing
• Cracked or warped original housing surfaces
• Air trapped in the cooling system during service
• Improper sealing at the thermostat outlet
• Cooling system maintenance on aging GM vehicles

Installation Notes and Tips

Verify the outlet port diameter, mounting hole spacing, and housing neck angle before installation. This thermostat housing does not include a thermostat, so transfer or replace the thermostat as needed during service. Use the included gasket and bleed the cooling system through the air vent after installation to reduce trapped air. Confirm fitment for your specific Chevrolet Cavalier, Pontiac Sunbird, or other listed application before assembly.

Quality Assurance

Dorman designs this replacement housing to match original fit and durability requirements for the listed applications and to handle extreme temperature changes in normal cooling system operation.