Motorad 473-185 Engine Coolant Thermostat Housing Assembly

OE-Style Thermostat Housing Assembly

The Motorad 473-185 engine coolant thermostat housing assembly is built for precise coolant temperature control in OE-specified applications. It combines a copper thermostat case, wax compound response, and OEM-style sealing surfaces to support stable cooling performance in demanding systems.

Compatible With 1997-2003 Jaguar XJ8, 1997-2002 Jaguar XK8, 1998-2003 Jaguar Vanden Plas, 2000-2002 Jaguar S-Type, 2000-2002 Lincoln LS, and 2002 Ford Thunderbird applications that call for a 185°F thermostat housing assembly.

Key Features

• Motorad 473-185 thermostat housing assembly for OE-specified cooling system service
• 185°F temperature rating for factory-style coolant regulation
• Plastic, steel, and copper construction for housing strength and thermal response
• Copper case and wax compound for quick reaction to coolant temperature changes
• Offset design with air relief valve where applicable
• Includes gasket/seal with rubber O-ring sealing style
• One outlet port, 1.68 in outlet diameter, and 1.38 in bypass diameter

Product Details

This thermostat housing assembly is manufactured to OEM specifications and processes by an OE supplier using materials selected for cooling-system durability. The Motorad Kit line focuses on direct-fit thermostat and housing service parts, and the 473-185 follows that approach with an integrated housing, thermostat, and seal arrangement for listed Jaguar, Lincoln, and Ford applications. This part cross-references Dorman OE Solutions 902-1215 for the same application.

Common Cooling Issues It May Address

• Engine running too cool or too warm due to thermostat control problems
• Coolant leaks at the housing or seal interface
• Temperature fluctuation from worn thermostat components
• Air trapped in the cooling system after service
• Fitment problems from using a non-OE-style housing

Installation Notes

Verify the OE-specified 185°F temperature requirement before installation. Inspect the mating surfaces, bypass passage, and outlet connection for corrosion or residue, and replace the seal if the sealing surface is damaged. No mounting hardware or installation tool is listed for this part, so reuse or source the required fasteners as needed for the vehicle application.

Quality Assurance

Motorad manufactures this thermostat housing assembly with OEM-quality materials and safety standards through an OE supplier process. The design is intended to meet factory-style fit and thermal response expectations for the listed vehicles, including Jaguar XJ8, Jaguar XK8, Jaguar Vanden Plas, Jaguar S-Type, Lincoln LS, and Ford Thunderbird applications.