Motorad 379-187 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for OE Cooling Control

Motorad 379-187 is an engine coolant thermostat housing assembly built for OE-style cooling system service. It combines the thermostat, housing, and seal in one integrated design for vehicles that require a 187 degree F opening temperature and a 1.54 in outlet diameter.

Compatible With Chevrolet Silverado, Tahoe, Corvette, GMC Sierra, Yukon, Cadillac Escalade, and related applications that use an integrated thermostat housing, this Motorad Integrated Housing Thermostat is built to match OEM specifications and processes.

Key Features

• Part number 379-187 with 187 Deg. F start-to-open temperature
• Integrated housing design with thermostat and rubber seal included
• 3 bolt holes and 1 outlet port for OE-style mounting
• Silver housing finish with aluminum, stainless steel, and copper construction
• Offset design and air relief valve included where applicable
• Manufactured by an OE supplier using OEM quality materials

Product Details

The Motorad Integrated Housing Thermostat line is built for direct-fit cooling system service where the thermostat and housing are serviced together. This design helps maintain stable coolant flow control in demanding applications and uses a copper case with wax compound for quick response to coolant temperature changes. The 379-187 is a practical OE replacement for vehicles such as the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, and Chevrolet Corvette that call for a 187F integrated thermostat housing assembly.

This part cross-references Dorman OE Solutions 902-700 and Stant 14298 for the same application.

Common Cooling System Issues Addressed

• Engine running too cool or too warm due to thermostat wear
• Coolant leaks at the thermostat housing or seal surface
• Delayed coolant temperature response during warm-up
• Service needs on integrated thermostat and housing assemblies
• Fitment replacement for OE-specified 187F cooling control

Installation Notes

Verify the original housing style, outlet diameter, bolt-hole count, and temperature rating before installation. This assembly uses 3 bolt holes and includes a rubber seal; bolts and mounting hardware are not included. Clean the mating surfaces thoroughly and follow the vehicle service procedure for coolant refill and air bleeding after installation.

Quality Assurance

Motorad manufactures this thermostat housing assembly to OEM specifications and processes with OE-supplier quality materials and safety standards. The copper case and wax compound are selected for responsive temperature control in automotive cooling systems.