Stant 27103 Engine Coolant Thermostat Gasket

Thermostat Gasket for OE-Style Cooling Service

The Stant 27103 thermostat gasket is an engine coolant thermostat gasket built to conform to OE specification for a precise seal at the thermostat housing. It is engineered for long-lasting operation in cooling system service on a wide range of domestic, import, and classic applications.

Compatible With applications such as 1994-2003 Dodge Ram 2500 and Ram 3500, plus select Ford, Chevrolet, GMC, Jaguar, Nissan, Toyota, Honda, Acura, Isuzu, Mazda, Buick, Cadillac, and Pontiac models.

• OE-spec thermostat gasket for engine coolant service
• Stant thermostat gasket line for direct replacement applications
• Part number 27103 for catalog and fitment lookup
• Fits a broad range of vehicles from 1949-2003
• Replaces OEM part number 25103 on listed applications

Detailed Fitment and Application

Stant 27103 is a thermostat gasket used to seal the thermostat housing and help maintain proper coolant containment at the engine cooling interface. This part is listed for many applications, including 1983-1993 Ford F-250, 1983-1994 Ford E-350 Econoline, 1986-1995 Chevrolet G20, 1986-1995 GMC G3500, 1992-1997 Isuzu Trooper, and 1994-2003 Dodge Ram 3500. It also covers select Jaguar XJ6, XJS, and XJ12 models, along with older Buick and Cadillac vehicles.

This part cross-references OEM part number 25103 for the same application.

What This Part Helps Address

• Coolant seepage at the thermostat housing
• Loss of sealing integrity after thermostat service
• Maintenance replacement during cooling system repair
• Fitment needs for OE-style gasket replacement on listed vehicles
• Service on vehicles requiring a 3 1/4" x 3 1/2" thermostat gasket

Installation Notes and Tips

Clean the thermostat housing and mating surfaces before installation. Verify the gasket shape and dimensions against the removed part and confirm vehicle fitment by year, make, and model before assembly. Use the gasket only on the applications listed for Stant 27103, including the specified Dodge Ram 2500, Ford F-350, and Chevrolet Metro fitments.

Quality Assurance

Stant states that this thermostat gasket conforms to OE specification and is engineered for long-lasting operation. The Stant thermostat gasket line is built for direct replacement use in cooling system service.