Fel-Pro 35748 Engine Coolant Thermostat Seal

Fel-Pro 35748 Engine Coolant Thermostat Seal

Fel-Pro 35748 is an engine coolant thermostat seal built for the 2000-2006 Nissan Sentra. It uses application-specific sealing materials to support a precise fit and dependable coolant sealing at the thermostat housing.

Key Features

• Engine coolant thermostat seal for thermostat housing service
• Inside diameter: 1.725 in. (43.8 mm)
• Thickness: 0.207 in. (5.2 mm)
• Premium grade construction
• Zero mounting holes for a simple seal-only design
• Fits 2000-2006 Nissan Sentra, N/A

Product Details

Fel-Pro 35748 is engineered as a sealing solution for coolant system service where the thermostat seal must maintain a consistent barrier against leaks. The seal dimensions, including the 1.725-inch inside diameter and 0.207-inch thickness, are specified to match the application and support proper thermostat housing sealing on the Nissan Sentra. Fel-Pro’s application-specific material approach is intended to deliver the sealing performance technicians expect from a premium gasket and sealing system brand. This part cross-references MAHLE C31808 for the same application.

Common Issues This Seal Can Address

• Coolant seepage at the thermostat housing
• Visible coolant residue around the sealing surface
• Loss of sealing integrity after thermostat service
• Improper seal fit from worn or damaged original material

Installation Notes and Tips

Inspect the thermostat housing and mating surfaces before installation. Remove old gasket material, corrosion, and coolant residue so the new seal can seat evenly. Verify the seal dimensions against the housing and thermostat assembly before reassembly. For best results, follow the vehicle service procedure for the 2000-2006 Nissan Sentra and confirm the cooling system is properly refilled and bled after service.

Quality Assurance

Fel-Pro gaskets are built around vehicle-specific sealing applications and materials selected for professional repair use. Fel-Pro 35748 is part of the brand’s sealing system lineup for coolant and engine service on the Nissan Sentra.