Fel-Pro 35706 Engine Coolant Thermostat Seal

Fel-Pro 35706 Engine Coolant Thermostat Seal

Fel-Pro 35706 is an engine coolant thermostat seal built for direct sealing performance in select Ford and Mercury applications. It uses application-specific materials to help maintain a reliable coolant seal where the thermostat housing meets the engine.

Key Features

• Engine coolant thermostat seal for sealing the thermostat housing interface
• Inside diameter: 1.900 in. (48.2 mm)
• Thickness: 0.215 in. (5.4 mm)
• Premium grade construction
• Zero mounting holes for a simple seal-only design
• Fits 1996-2000 Ford Mustang, 1996-1997 Ford Thunderbird, and 1996-1997 Mercury Cougar

Detailed Description

Fel-Pro 35706 is engineered for vehicles that need a precise thermostat seal to maintain cooling system integrity. Fel-Pro gaskets are known for application-specific sealing materials, and this seal follows that approach with dimensions sized for the intended thermostat housing fit. It is a practical choice for Ford Mustang, Ford Thunderbird, and Mercury Cougar cooling system service when the original seal needs replacement. This part cross-references 112961 for the same application.

What It Helps Address

• Coolant seepage at the thermostat housing
• Sealing issues after thermostat service
• Loss of coolant from a worn or flattened seal
• Improper sealing caused by age, heat cycling, or compression set
• Cooling system maintenance on Ford Mustang, Ford Thunderbird, and Mercury Cougar models

Installation Notes and Tips

Inspect the thermostat housing and mating surfaces before installation. Remove old gasket material, clean the sealing faces thoroughly, and verify the seal sits flat and centered during assembly. Confirm the application by year and engine configuration before service, especially on 1996 Ford Mustang, 1996 Ford Thunderbird, and 1996 Mercury Cougar models with notch configuration, as well as 1997-2000 Ford Mustang and 1997 Ford Thunderbird and Mercury Cougar applications.

Quality Assurance

Fel-Pro focuses on vehicle-specific sealing solutions for professional repair use, with materials selected to support dependable sealing performance in cooling system applications.