Facet 7.8403 Engine Coolant Thermostat

Engine Coolant Thermostat for Mazda, Ford, Mitsubishi, and Acura

Facet 7.8403 is an engine coolant thermostat for a wide range of import applications, including Mazda Protege, Mazda 626, Mazda Millenia, Mazda MPV, Ford Probe, Mazda MX-6, Mazda MX-3, Mitsubishi Expo LRV, and Acura Legend models. It is specified with a 169°F opening temperature for direct-fit cooling system service.

Key Features

• Engine coolant thermostat with a 169°F opening temperature
• Fits 1999-2003 Mazda Protege and 2002-2003 Mazda Protege5
• Fits 1993-2002 Mazda 626 and 1995-2002 Mazda Millenia
• Fits 1996-1998 Mazda MPV, 1993-1997 Ford Probe, and 1993-1997 Mazda MX-6
• Fits 1992-1995 Mazda MX-3, 1992-1993 Mitsubishi Expo LRV, and 1986-1990 Acura Legend
• Facet 7.8403 for cooling system temperature regulation

Detailed Description

The Facet 7.8403 thermostat helps regulate coolant flow so the engine reaches and maintains its operating temperature. This matters for vehicles such as the Mazda Protege, Mazda 626, and Ford Probe, where stable coolant control supports consistent warm-up and temperature management in everyday driving. Facet 7.8403 is a practical replacement choice when servicing the thermostat and housing area on listed applications.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Engine running too cool or taking too long to warm up
• Temperature fluctuation during stop-and-go driving
• Cooling system service on a Mazda 626, Mazda Millenia, or Mazda MX-6
• Thermostat replacement on a Ford Probe or Acura Legend
• Cooling control concerns on Mitsubishi Expo LRV applications

Installation Notes and Tips

Install Facet 7.8403 only on the listed vehicle applications and verify the 169°F opening temperature before installation. Inspect the thermostat housing, gasket sealing surfaces, and coolant condition during service, and refill the cooling system according to the vehicle manufacturer’s procedure after installation.

Quality Assurance

Facet manufactures replacement cooling system components for import and domestic applications. Part number 7.8403 is built for the listed fitments and cooling-temperature specification.