Fel-Pro 35838 Engine Coolant Thermostat Housing O-Ring

Fel-Pro 35838 Thermostat Housing O-Ring

Fel-Pro 35838 is a premium engine coolant thermostat housing O-ring built for a precise seal in Volkswagen and Audi cooling system applications. It uses application-specific sealing materials to support reliable coolant containment where the thermostat housing meets the engine.

Key Features

• Premium-grade thermostat housing O-ring for cooling system sealing
• Application-specific material selection for vehicle-specific fit and sealing performance
• 50 mm inside diameter for the listed applications
• Compatible with Volkswagen Beetle, Golf, Jetta, Passat, Tiguan, Eos, and GTI applications
• Compatible with Audi A3, A4, A4 Quattro, A5, A5 Quattro, Q5, and TT applications
• Fel-Pro part number 35838 for easy identification and ordering

Detailed Description

Fel-Pro 35838 is an engine coolant thermostat housing O-ring used to seal the thermostat housing connection in select Volkswagen and Audi vehicles. The premium construction and application-specific sealing material are intended to maintain a dependable coolant seal in 50 mm inside diameter applications. This part cross-references 06B121119B and C32610 for the same application.

Compatible With 2006-2014 Volkswagen Jetta, 2010-2014 Volkswagen Golf, 2013-2014 Volkswagen Beetle, and other listed Volkswagen and Audi models that use the same 50 mm inside diameter thermostat housing seal. Fel-Pro 35838 is a direct-fit sealing component for service work on the cooling system.

What It Helps Address

• Coolant seepage at the thermostat housing seal
• Loss of sealing integrity during thermostat housing service
• Coolant odor or visible residue around the housing joint
• Maintenance replacement of a worn or flattened O-ring
• Leak concerns after cooling system repair on VW and Audi engines

Installation Notes and Tips

Verify the housing diameter and application before installation. Clean the sealing surfaces thoroughly, inspect the thermostat housing for damage, and replace the O-ring during cooling system service to help restore a proper seal. Confirm the part matches the vehicle’s 50 mm inside diameter requirement before assembly.

Quality Assurance

Fel-Pro gaskets are engineered with vehicle-specific sealing materials and are trusted by professionals for sealing performance and durability in engine service applications.