Fel-Pro 35991 Engine Coolant Thermostat Seal

Reliable Engine Coolant Thermostat Seal for Ford and Lincoln Vehicles

The Fel-Pro 35991 engine coolant thermostat seal is designed to provide a precise and durable seal for your vehicle's thermostat housing. Crafted from premium rubber, this seal ensures optimal performance and longevity in various Ford and Lincoln models, including the F-150, Explorer, Mustang, and Navigator.

• Premium grade rubber material for enhanced durability
• Inside diameter of 55 mm and outside diameter of 58.5 mm for accurate fitment
• Thickness of 3.5 mm to maintain a secure seal under engine operating conditions
• Compatible with a wide range of Ford and Lincoln models such as Bronco, Edge, Escape, and Continental
• Part number 35991 ensures correct replacement and easy identification

Durable Rubber Construction and Precise Dimensions

This engine coolant thermostat seal is manufactured from high-quality rubber, providing resistance to heat and coolant exposure. The 55 mm inside diameter and 58.5 mm outside diameter are engineered to fit tightly within the thermostat housing, preventing leaks and maintaining proper engine temperature regulation. With a thickness of 3.5 mm, the seal offers a reliable barrier against coolant seepage, helping to protect your engine’s cooling system.

Compatible Ford and Lincoln Models

The Fel-Pro 35991 thermostat seal is compatible with numerous Ford and Lincoln vehicles, including the Ford F-150, Explorer, Ranger, Transit series, and Lincoln Navigator, MKX, and MKZ. This compatibility ensures that the seal meets the specific requirements of these models, providing a dependable replacement part for your engine cooling system.

Common Applications and Issues Addressed

• Prevents coolant leaks around the thermostat housing
• Maintains proper engine temperature by ensuring a tight seal
• Reduces risk of engine overheating due to coolant loss
• Replaces worn or damaged seals to restore cooling system integrity
• Helps avoid costly engine repairs related to coolant system failures

Installation Notes and Tips

When installing the Fel-Pro 35991 engine coolant thermostat seal, ensure the thermostat housing surface is clean and free of old gasket material or debris. Proper alignment of the seal is critical to prevent leaks. Use appropriate tools to avoid damaging the rubber seal during installation. Refer to your vehicle’s service manual for torque specifications and installation procedures specific to your Ford or Lincoln model.

Quality Assurance and Warranty

Fel-Pro is known for manufacturing reliable sealing products that meet OEM specifications. The 35991 engine coolant thermostat seal undergoes rigorous quality control to ensure consistent performance. While specific warranty details are not provided, Fel-Pro products typically come with a limited warranty against defects in material and workmanship, offering confidence in your purchase.