Dorman 902-754 Engine Coolant Thermostat Housing

Engine Coolant Thermostat Housing

Dorman 902-754 is a replacement engine coolant thermostat housing built for specified Chevrolet and GMC cooling system applications. It is made from metal with a natural finish and a 45-degree housing neck angle to match the original layout on supported vehicles.

Compatible With Chevrolet Silverado, Express, Suburban, Tahoe, C/K Series, and GMC Savana, Yukon, C/K Series applications, this thermostat housing is designed to match stock fit and durability while handling repeated temperature swings in the cooling system.

Key Features

• Metal construction for strength and heat resistance
• Natural finish
• 1.25 in. outlet port diameter
• Gasket included for installation
• 2 mounting holes with 0.375 in. diameter
• 45-degree housing neck angle
• No bleeder valve
• Thermostat not included

Detailed Description

This Dorman thermostat housing, part number 902-754, is engineered as a direct replacement for the original engine coolant thermostat housing on select GM trucks, vans, and SUVs. The metal housing is built to handle extreme temperature changes in the cooling system, helping maintain a secure seal at the thermostat mounting point. This part cross-references Gates CO34774 and Motorad 5169KT for the same application.

Use 902-754 when servicing cooling system leaks or replacing a damaged thermostat housing on vehicles such as the Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, Chevrolet Express 1500, GMC Savana 2500, and GMC Yukon. The fitment also includes Chevrolet Tahoe, Suburban, C/K 1500 and 2500 models, plus related GMC C/K and Savana applications.

What It Helps Address

• Coolant seepage at the thermostat housing
• Cracked or corroded original housing
• Warped sealing surfaces
• Improper thermostat housing alignment
• Cooling system service on GM V8 applications

Installation Notes

Verify engine and fitment details before installation. Transfer or install the thermostat separately, since it is not included. Use the included gasket and confirm the outlet port, mounting hole spacing, and 45-degree neck orientation match the original part before tightening fasteners.

Quality Assurance

Dorman designs this replacement housing to match the fit and durability of the stock thermostat housing and to withstand repeated temperature changes for extended service life.