Fel-Pro 35831 Engine Coolant Pipe O-Ring - Outlet

Fel-Pro Engine Coolant Pipe O-Ring 35831

Fel-Pro 35831 is a premium engine coolant pipe O-ring built for repair jobs where sealing surfaces are not perfect. It is made with proprietary sealing materials to help deliver a dependable coolant seal in demanding real-world service.

Key Features

• Premium-grade engine coolant pipe O-ring for cooling system sealing
• Engineered for imperfect sealing surfaces found in repair applications
• Proprietary Fel-Pro materials for consistent sealing performance
• Direct-fit sealing solution for select Audi and Volkswagen applications
• Part number 35831 for easy identification and ordering

Detailed Description

Fel-Pro 35831 is an engine coolant pipe O-ring designed for outlet-side cooling system service on select Audi A8 Quattro, A6 Quattro, S6, S7, S8, RS7, R8, Q7, A4, A4 Quattro, Allroad Quattro, and Volkswagen Touareg, Passat, and Phaeton applications. This seal is intended for technicians and DIY repairs that require a precise coolant pipe seal where the original surface may show wear, minor imperfections, or age-related distortion. Fel-Pro 35831 is also cross-referenced to Genuine N90912501 and MAHLE C32280 for the same application.

What It Helps Fix

• Coolant seepage at the outlet pipe connection
• Leakage caused by aged or flattened O-ring material
• Sealing issues from minor surface imperfections
• Cooling system service on high-mileage Audi and Volkswagen engines
• Repeat leaks after prior coolant pipe repair

Installation Notes and Tips

Confirm the outlet position and match the vehicle application before installation. Clean the sealing groove and mating surfaces thoroughly, then inspect the coolant pipe for damage, corrosion, or distortion that could affect the seal. Use proper coolant system service procedures and verify the repair after refill and pressure testing.

Quality Assurance

Fel-Pro designs sealing products for the repair environment, with materials selected to handle the realities of used engine components and less-than-perfect sealing surfaces. Part number 35831 is a premium sealing component for dependable coolant system service.