Fel-Pro 35857 Engine Coolant Thermostat Seal

Fel-Pro 35857 Engine Coolant Thermostat Seal

Fel-Pro 35857 is a premium engine coolant thermostat seal built for applications that demand accurate sealing at the thermostat housing. It is made with application-specific materials to support a dependable seal on Chrysler, Dodge, Jeep, and Ram vehicles across a wide range of V6 and V8 cooling system applications.

Key Features

• Premium-grade thermostat seal for cooling system service
• Application-specific sealing material for a precise fit
• Supports 100% vehicle sealing when installed on the correct application
• Compatible with many Chrysler 300, Dodge Charger, and Ram 1500 applications
• Part number 35857 for easy identification and ordering

Detailed Description

Fel-Pro 35857 is an engine coolant thermostat seal designed to restore the sealing surface between the thermostat and housing in supported vehicles. Fel-Pro focuses on vehicle-specific sealing solutions, and this premium seal follows that approach with materials selected for cooling system service. It is a practical choice for maintenance on Chrysler 300, Dodge Challenger, Dodge Durango, Jeep Grand Cherokee, Ram 2500, and related platforms where thermostat sealing integrity matters. This part cross-references MAHLE C31788 for the same application.

What It Helps Address

• Coolant seepage at the thermostat housing
• Loss of sealing after thermostat service
• Cooling system leaks traced to a worn thermostat seal
• Improper sealing from aged or flattened gasket material
• Repeat repairs caused by a poor-quality replacement seal

Installation Notes and Tips

Verify the thermostat housing and mating surfaces are clean, flat, and free of old gasket material before installation. Confirm the part number against the vehicle application, since Fel-Pro 35857 is used across multiple Chrysler, Dodge, Jeep, and Ram models from 2003-2021. For best results, install the seal during thermostat service and follow the vehicle manufacturer’s cooling system procedures.

Quality Assurance

Fel-Pro is known for application-specific sealing products used in professional repair environments. The 35857 thermostat seal is a premium-grade sealing component built to support reliable cooling system service on the listed applications.