Four Seasons 86098 Engine Coolant Thermostat Housing

Mercedes-Benz Thermostat Housing Assembly

Four Seasons 86098 is an integrated engine coolant thermostat housing built for Mercedes-Benz cooling system service. It combines the thermostat housing and thermostat in one aluminum assembly, with the gasket or seal included for a cleaner replacement on select V8 applications.

• Aluminum thermostat housing for engine coolant service
• Integrated thermostat housing style with thermostat included
• Gasket or seal included
• Meets or exceeds OEM requirements
• Inlet port diameter: 1.65 in.
• Bolt hole center to bolt hole center: 2.737 in.
• Overall height: 3.54 in.
• Flange thickness: 0.317 in.

Product Details

This Four Seasons thermostat housing is engineered as an integrated thermostat housing for Mercedes-Benz cooling systems. The aluminum construction supports heat resistance and dimensional stability, while the included thermostat and seal simplify replacement of the coolant outlet assembly. Four Seasons 86098 is a direct-fit style service part for vehicles such as the Mercedes-Benz S500, SL500, and E420, and it is also listed for additional CL-Class, S-Class, and E-Class applications.

This part cross-references Gates 33933 for the same application. It also cross-references Stant 14598 for the same application.

Common Repair Uses

• Coolant leaks at the thermostat housing
• Sticking thermostat causing temperature fluctuation
• Cracked or warped housing surfaces
• Overheating from restricted coolant flow
• Service replacement for worn engine coolant components

Installation Notes

Verify the inlet port diameter, bolt spacing, and overall housing dimensions before installation. Clean the mating surfaces thoroughly and inspect the cooling system for contamination or old gasket material before reassembly. This thermostat housing is listed for Mercedes-Benz applications including 1992-1993 400E, 1992-1993 500E, 1994-1999 S500, and 1994-1998 SL500, with notes indicating thermostat inclusion in the engine coolant thermostat/water outlet assembly kit.

• Fits 1998-1999 Mercedes-Benz CL500, N/A
• Fits 1994-1999 Mercedes-Benz S420, N/A
• Fits 1999 Mercedes-Benz S430, N/A
• Fits 1994-1999 Mercedes-Benz S500, N/A
• Fits 1994-1998 Mercedes-Benz SL500, N/A
• Fits 1997 Mercedes-Benz E420, N/A
• Fits 1994-1995 Mercedes-Benz E420, N/A
• Fits 1994 Mercedes-Benz E500, N/A
• Fits 1992-1993 Mercedes-Benz 400E, N/A
• Fits 1993 Mercedes-Benz 400SEL, N/A
• Fits 1992-1993 Mercedes-Benz 500E, N/A
• Fits 1993 Mercedes-Benz 500SEC, N/A
• Fits 1992-1993 Mercedes-Benz 500SEL, N/A
• Fits 1992-1993 Mercedes-Benz 500SL, N/A
• Fits 1992 Mercedes-Benz 400SE, N/A

Quality Assurance

Four Seasons 86098 is listed as meeting or exceeding OEM requirements and is part of the Four Seasons Thermostat Housing line for engine coolant components. Use the confirmed fitment details and dimensions to match the correct Mercedes-Benz application before service.