Motorad 379-180 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for GM Cooling Systems

Motorad 379-180 is an integrated housing thermostat assembly built for vehicles that use a thermostat and housing in one service unit. It features a 180 degree F opening temperature, OEM-style seals, and an offset design with an air relief valve for proper coolant flow and air management.

Compatible With select Cadillac, Chevrolet, GMC, Hummer, Pontiac, and Isuzu applications, including Chevrolet Silverado 1500, GMC Sierra 2500 HD, and Cadillac Escalade models that require an integrated thermostat housing assembly.

Key Features

• 180 degree F thermostat opening temperature
• Integrated housing thermostat assembly with housing, thermostat, and seal application coverage in fitment notes
• Aluminum, steel, and copper construction
• Copper case and wax compound for responsive coolant temperature control
• O-ring gasket/seal included; rubber seal material
• Offset design with air relief valve
• 3-bolt housing design with 1 outlet port
• OE-style seals and OEM specification manufacturing process

Product Details

This Motorad Integrated Housing Thermostat line is built to OE supplier standards using OEM quality materials and manufacturing processes. The 379-180 is engineered for demanding automotive cooling systems and uses a copper case with wax compound to react quickly to coolant temperature changes. The housing design, seal style, and outlet dimensions support direct replacement service on listed GM and related platforms. This part cross-references Dorman OE Solutions 902-2700 and Four Seasons 37980 for the same application.

Common Cooling System Issues It Can Address

• Engine running too cool or too warm due to thermostat wear
• Coolant leaks at the thermostat housing or seal surface
• Delayed coolant temperature regulation after startup
• Air trapped in the cooling system after service
• Cracked or corroded integrated thermostat housing replacement needs

Installation Notes and Tips

Verify the original water pump and thermostat housing configuration before ordering, since fitment notes specify applications that use an integrated thermostat and housing. Confirm the 180 degree F temperature rating, bypass dimensions, outlet diameter, and 3-bolt mounting pattern against the removed part. Replace the sealing surface carefully and follow the vehicle service procedure for coolant refill and air bleeding.

Quality Assurance

Motorad manufactures this thermostat housing assembly with OEM quality materials and safety standards as an OE supplier. The integrated housing design, copper wax element, and OEM-style sealing approach are intended to meet the requirements of listed Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, and other supported applications.