Motorad 860-221 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for OE Cooling Control

Motorad 860-221 is an engine coolant thermostat housing assembly built for vehicles that use an integrated thermostat and housing design. It features a 221 Deg. F opening temperature, aluminum, stainless steel, and copper construction, plus a rubber seal for a secure coolant connection.

Fits 2017-2024 Cadillac XT5, N/A; Fits 2020-2022 Cadillac XT6, N/A; Fits 2019-2022 Chevrolet Blazer, N/A; Fits 2017-2024 GMC Acadia, N/A; Fits 2018-2020 Buick Regal Sportback, N/A; Fits 2017-2019 Buick LaCrosse, N/A.

Key Features

• Integrated housing thermostat assembly for direct replacement service
• 221 Deg. F opening temperature for OE-specified cooling control
• Bleeder hole and jiggle pin included to help purge trapped air
• Rubber gasket/seal included for the housing interface
• Two bolt holes and one outlet port
• Silver finish with aluminum, stainless steel, and copper materials
• Offset design and OEM-style seals where applicable

Product Details

This Motorad Integrated Housing Thermostat line is built to OE specifications and processes, using OEM-quality materials and safety standards from an OE supplier. The copper case and wax compound are engineered for quick response to coolant temperature changes, while the integrated housing design helps simplify replacement on modern cooling systems. Motorad 860-221 is a direct-fit thermostat housing assembly for Cadillac XT5, Cadillac XT6, Chevrolet Blazer, GMC Acadia, Buick Regal Sportback, and Buick LaCrosse applications listed above.

This part cross-references Dorman - HELP 15872 and Brembo P86021 for the same application.

Common Cooling System Issues It Can Address

• Engine running too cool or too hot due to thermostat control problems
• Coolant leaks at the thermostat housing or seal interface
• Air trapped in the cooling system after service
• Delayed coolant temperature regulation during warm-up
• Housing wear or corrosion on integrated thermostat assemblies

Installation Notes

Verify the 221 Deg. F temperature specification and outlet diameter before installation. Inspect the mating surfaces, replace any damaged coolant lines or seals as needed, and follow the vehicle service procedure for bleeding air from the system. The assembly includes a gasket/seal; bolts and mounting hardware are not included.

Quality Assurance

Manufactured to OEM specifications with OE-supplier materials and processes, this thermostat housing assembly is built for demanding automotive cooling systems. The integrated design, air relief features, and OEM-style sealing details support consistent fitment and coolant temperature control on the listed Cadillac, Chevrolet, GMC, and Buick applications.