Motorad 931-203 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for OE Cooling Control

The Motorad 931-203 integrated housing thermostat is built for precise coolant temperature control in demanding engine cooling systems. It combines the thermostat and housing in one OE-style assembly for select Chevrolet Colorado, GMC Canyon, and other applications listed below.

Motorad’s Integrated Housing Thermostat line focuses on direct-fit cooling service parts that follow OEM specifications and processes. This 931-203 assembly uses a copper case and wax compound for quick reaction to coolant temperature changes, along with an offset design, air relief valve, and OEM-style seals where applicable.

Key Features

• Part number: 931-203
• Integrated engine coolant thermostat housing assembly
• 203°F opening temperature / start-to-open temperature
• Aluminum, stainless steel, and copper construction
• Rubber gasket/seal included
• 2 bolt holes and 1 outlet port
• 1.19 in outlet diameter
• Silver finish
• OE supplier manufacturing with OEM-quality materials

Detailed Description

This Motorad thermostat housing assembly is engineered for vehicles that require a 203°F thermostat setting and an integrated housing design. It is a direct replacement style part for cooling system service on applications such as 2015-2021 Chevrolet Colorado, 2015-2021 GMC Canyon, 2022 Chevrolet Colorado, and 2022 GMC Canyon. It also cross-references Dayco 86127 for the same application.

Use the Motorad 931-203 when servicing an OE-specified cooling system that needs stable temperature regulation, a sealed housing interface, and a thermostat assembly built to OEM dimensions. The integrated design helps simplify replacement on the Chevrolet Colorado and GMC Canyon cooling system, while also serving additional listed applications including Buick LaCrosse, Cadillac ATS, Chevrolet S10, and Chevrolet Malibu.

What This Part Helps Address

• Engine running too cool or too hot due to thermostat wear
• Coolant leaks at the thermostat housing seal surface
• Temperature control issues in a 203°F OE-spec cooling system
• Service replacement for a cracked or aging thermostat housing
• Cooling system maintenance on Chevrolet Colorado and GMC Canyon applications

Installation Notes and Tips

Confirm the OE temperature specification before installation, since this assembly is set to open at 203°F. Inspect the mating surfaces, replace contaminated coolant as needed, and verify the rubber seal seats evenly during installation. This part does not include bolts or mounting hardware, so reuse or source the correct fasteners for the vehicle.

Quality Assurance

Motorad manufactures this integrated housing thermostat with OEM-quality materials and OE-supplier standards. The design follows OEM specifications and processes to support consistent fit and temperature response in demanding automotive cooling systems.