Fel-Pro 35963 Engine Coolant Thermostat O-Ring

Fel-Pro 35963 Engine Coolant Thermostat O-Ring

Fel-Pro 35963 is a premium engine coolant thermostat O-ring built for sealing performance in cooling system service. It uses application-specific materials to help deliver vehicle-level sealing that professionals trust on Mini Cooper, Cooper Countryman, and Cooper Paceman applications.

Key Features

• Premium-grade thermostat O-ring for cooling system sealing
• Application-specific material selection for a precise seal
• Supports 100% vehicle sealing when used in the correct application
• Direct-fit replacement for select Mini cooling system repairs
• Fel-Pro part number 35963 for easy identification

Detailed Description

Fel-Pro 35963 is an engine coolant thermostat O-ring designed for sealing the thermostat housing in select Mini vehicles. As a premium sealing component, it is made to match the demands of cooling system service where a stable seal is critical to maintaining proper coolant control. This part is commonly searched as a thermostat O-ring for 2007-2015 Mini Cooper, 2011-2016 Mini Cooper Countryman, and 2013-2016 Mini Cooper Paceman applications, including 1st Design listings where noted. This part cross-references BMW 11537548657 for the same application.

Vehicle Fitment

• Fits 2011-2016 Mini Cooper Countryman, N/A
• Fits 2013-2016 Mini Cooper Countryman, N/A, 1st Design
• Fits 2013-2016 Mini Cooper Paceman, N/A
• Fits 2013-2016 Mini Cooper Paceman, N/A, 1st Design
• Fits 2007-2015 Mini Cooper, N/A
• Fits 2013-2015 Mini Cooper, N/A, 1st Design

Common Repair Uses

• Replacing a leaking thermostat housing seal
• Restoring coolant system sealing after thermostat service
• Addressing coolant seepage around the thermostat area
• Correcting sealing issues during Mini Cooper cooling repairs
• Supporting maintenance on Mini Cooper Countryman and Paceman cooling systems

Installation Notes and Tips

Clean the sealing surfaces thoroughly before installation and inspect the thermostat housing for wear, distortion, or residue that could affect the seal. Verify the vehicle’s design variant before ordering, since this part lists standard and 1st Design fitments for select Mini models. Use the exact application match for the best sealing result.

Quality Assurance

Fel-Pro sealing products are built around application-specific materials and vehicle-focused sealing requirements. That engineering approach supports consistent fit and sealing performance in cooling system service.