Mahle SS45940 Engine Valve Stem Oil Seal Set - Intake or Intake and Exhaust

Mahle Valve Stem Oil Seal Kit SS45940

Mahle SS45940 is a valve stem oil seal kit built for engine sealing service on a wide range of Audi, Volkswagen, Porsche, and Mercedes-Benz applications. It uses a metal with molded rubber construction to help maintain a tight seal at the valve stem where oil control is critical.

Mahle gaskets and sealing components are used by OEMs and technicians worldwide, and this Valve Stem Oil Seal Kit follows that same OE-style approach to fit and sealing performance. If you are servicing an Audi RS3, Audi R8, or Volkswagen 2.0T/VR6 application, SS45940 is a direct-fit sealing solution for intake and exhaust valve stem service where listed.

Key Features

• Mahle Valve Stem Oil Seal Kit, part number SS45940
• Metal with molded rubber valve stem seal material
• Upper inside diameter: 6 mm
• Inside diameter: 0.236 in
• Outside diameter: 0.48 in
• Overall height: 9.7 mm
• Engine sealing component for intake and exhaust valve stem applications where specified
• Cross-references FEL-PRO SS 71074 and SS 71074-2 for the same application

Detailed Description

SS45940 is engineered as an engine valve stem oil seal set for precise oil control at the valve guide area. The metal-reinforced body with molded rubber sealing surface is selected for stable fitment and consistent sealing under heat and oil exposure. Dimensions are listed at 0.236 inch inside diameter, 0.48 inch outside diameter, and 0.382 inch thickness, with a 9.7 mm overall height.

Compatible vehicle coverage includes 2022-2025 Audi RS3 intake, 2017-2020 Audi RS3 intake, 2020-2023 Audi R8 intake and exhaust, 2018 Audi R8 intake and exhaust, and multiple Volkswagen and Audi platforms such as Jetta, Golf, Passat, A4, A6, TT, Touareg, and Porsche Cayenne. This Mahle SS45940 valve stem oil seal kit is also listed for Mercedes-Benz E300 intake applications in select model years.

What It Helps Address

• Oil leakage past the valve stem seal area
• Blue exhaust smoke caused by worn valve stem seals
• Oil consumption related to valve guide sealing wear
• Loss of sealing integrity during cylinder head service
• Valve train oil control issues on listed Audi, Volkswagen, Porsche, and Mercedes-Benz engines

Installation Notes and Tips

Verify engine code, cylinder head configuration, and intake/exhaust position before ordering. Fitment varies by model year and chassis breakpoints on some applications, including select Audi A8 Quattro and Mercedes-Benz E300 listings. Clean the valve guide area thoroughly and inspect the valve stems and guides for wear before installing new seals. Use proper valve spring service tools and follow factory service procedures for the specific engine.

Quality Assurance

Mahle sealing products are supplied to OEM and professional repair standards, with a focus on accurate dimensions and dependable engine sealing performance. Part number SS45940 is built to match the listed OE-style applications and interchange references for confirmed vehicle coverage.