Motorad 1078-212 Engine Coolant Thermostat Housing Assembly

Integrated Housing Thermostat for OE Fitment

The Motorad 1078-212 integrated housing thermostat is built for vehicles that require a thermostat, housing, and seal in one OE-style assembly. It uses OEM-quality materials and a 212°F opening temperature to support stable coolant flow in demanding cooling systems.

Compatible with Mercedes-Benz Metris and INFINITI Q50/Q60 applications listed below, this Motorad 1078-212 thermostat housing assembly is a direct replacement for the original coolant control unit.

Key Features

• Integrated housing thermostat assembly with thermostat, housing, and seal
• 212°F start-to-open temperature for OE-specified cooling control
• Black housing with plastic, stainless steel, and copper construction
• Rubber seal included for a proper sealing surface
• Two-bolt mounting design with four outlet ports
• Manufactured to OEM specifications and processes
• Copper case and wax compound for quick response to coolant temperature changes

Product Details

The Motorad Integrated Housing Thermostat line is designed for applications that use a combined thermostat and housing assembly rather than a separate thermostat service part. The 1078-212 follows OE specifications for fit and temperature control, helping maintain consistent engine coolant regulation in vehicles such as the Mercedes-Benz Metris, INFINITI Q50, and INFINITI Q60. This part number, 1078-212, is built with a copper case and wax element to react promptly as coolant temperature rises and falls.

This part cross-references CSF 10782 for the same application.

Vehicle Fitment

• Fits 2021-2023 Mercedes-Benz Metris, N/A; includes thermostat, housing, and seal; Integrated Housing Thermostat
• Fits 2016-2020 Mercedes-Benz Metris, N/A; temperature 212F; includes thermostat, housing, and seal; OE specified temperature; Integrated Housing Thermostat
• Fits 2016-2019 INFINITI Q50, N/A; temperature 212F; includes thermostat, housing, and seal; OE specified temperature; Integrated Housing Thermostat
• Fits 2017-2018 INFINITI Q60, N/A; temperature 212F; includes thermostat, housing, and seal; OE specified temperature; Integrated Housing Thermostat

Common Replacement Uses

• Restores proper coolant temperature regulation
• Addresses thermostat housing leaks at the seal surface
• Replaces a cracked or worn integrated housing assembly
• Corrects overheating caused by a thermostat that no longer opens at the specified temperature
• Helps resolve coolant circulation issues tied to thermostat sticking

Installation Notes

Verify the outlet port layout, bolt-hole count, and 212°F temperature specification before installation. Replace the sealing surface carefully and inspect the mating surfaces for debris, corrosion, or old gasket material. Use the correct coolant and follow the vehicle service procedure for bleeding air from the cooling system after installation.

Quality Assurance

Motorad manufactures this integrated housing thermostat with OEM-quality materials and OE-supplier standards. The 1078-212 is produced to OEM specifications and processes for consistent fit and temperature control in the listed Mercedes-Benz and INFINITI applications.