Facet 7.8442 Engine Coolant Thermostat

Facet 7.8442 Engine Coolant Thermostat

Facet 7.8442 is an engine coolant thermostat with a nominal opening temperature of 87C. It is built for direct-fit cooling system service on a wide range of Mercedes-Benz models and the Chrysler Crossfire, helping maintain proper coolant flow and operating temperature.

Use this thermostat when servicing Mercedes-Benz G500, SL500, E500, ML500, and related applications that call for Facet 7.8442 or the listed OE cross-references.

Key Features

• Nominal temperature rating: 87C
• Engine coolant thermostat for cooling system temperature control
• Direct replacement application for select Mercedes-Benz and Chrysler vehicles
• Cross-references Mercedes-Benz A1122000015 and A1122030275
• Cross-references Chrysler 5098918AA and K05098918AA

Detailed Description

This Facet thermostat is specified for vehicles that require an 87C coolant regulation point. In Mercedes-Benz applications such as the G500, SL500, E500, ML500, CLK500, S500, and E320, the thermostat helps regulate coolant circulation so the engine reaches and maintains its intended operating range. It also applies to the 2004-2008 Chrysler Crossfire. The Facet 7.8442 part number is a useful reference when matching the correct cooling system component for these vehicles.

Compatible vehicle coverage includes 1997-2020 Mercedes-Benz models and 2004-2008 Chrysler Crossfire applications listed in the fitment data. For buyers searching by OE number, Facet 7.8442 matches Mercedes-Benz A1122000015 and A1122030275, along with Chrysler 5098918AA and K05098918AA.

What It Is Used For

• Replacing a thermostat that is stuck open or stuck closed
• Restoring normal engine warm-up time
• Addressing unstable coolant temperature readings
• Correcting overheating caused by poor coolant flow control
• Servicing cooling systems on Mercedes-Benz and Chrysler Crossfire applications

Installation Notes and Tips

Verify the OE number and engine application before installation. Inspect the thermostat housing, gasket sealing surfaces, coolant condition, and adjacent hoses during service. After installation, refill and bleed the cooling system according to the vehicle manufacturer procedure to remove trapped air and confirm stable operating temperature.

Quality Assurance

Facet cooling components are cataloged for application-specific replacement use. This thermostat is identified by part number 7.8442 and the OE cross-reference numbers listed above for accurate parts matching.