Facet 7.8271 Engine Coolant Thermostat

Facet 7.8271 Engine Coolant Thermostat

Facet 7.8271 is an engine coolant thermostat for select Mercedes-Benz diesel applications with an 80 Degrees C opening temperature. It is built for direct replacement use in cooling system service on E300, S350, 300D, 300SD, 350SD, 350SDL, 300SDL, and 300TD models.

Key Features

• Engine coolant thermostat for temperature control in the cooling system
• 80 Degrees C thermostat rating
• Facet part number 7.8271
• Fits select Mercedes-Benz diesel models from 1986 through 1999
• Direct-fit service part for thermostat and housing applications

Fitment Details

• Fits 1998-1999 Mercedes-Benz E300, N/A, 80 Degrees C
• Fits 1994-1995 Mercedes-Benz S350, N/A, 80 Degrees C
• Fits 1990-1993 Mercedes-Benz 300D, N/A, 80 Degrees C
• Fits 1987 Mercedes-Benz 300D, N/A, 80 Degrees C
• Fits 1992-1993 Mercedes-Benz 300SD, N/A, 80 Degrees C
• Fits 1991 Mercedes-Benz 350SD, N/A, 80 Degrees C
• Fits 1990-1991 Mercedes-Benz 350SDL, N/A, 80 Degrees C
• Fits 1986-1987 Mercedes-Benz 300SDL, N/A, 80 Degrees C
• Fits 1987 Mercedes-Benz 300TD, N/A, 80 Degrees C

What It Is Used For

• Replacing a thermostat that is stuck open or stuck closed
• Restoring proper coolant flow regulation in Mercedes-Benz diesel engines
• Addressing slow warm-up or unstable operating temperature
• Correcting overheating caused by thermostat malfunction
• Servicing the cooling system during thermostat housing maintenance

Installation Notes and Tips

Verify the thermostat opening temperature before installation and confirm the application against the vehicle year, model, and cooling system configuration. Inspect the thermostat housing, gasket surfaces, and coolant condition during service, and bleed the cooling system after installation according to factory procedure. Facet 7.8271 should be matched to the listed Mercedes-Benz E300, S350, and diesel model applications only.

Quality Assurance

Facet cooling system components are selected for service replacement in automotive temperature-control applications. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.