Mahle SS45940A Engine Valve Stem Oil Seal Set - Intake and Exhaust

Valve Stem Oil Seal Kit for OE-Style Engine Sealing

Restore valve stem sealing performance with the Mahle SS45940A valve stem oil seal kit. Built for precise engine sealing, this kit helps control oil at the valve guides and supports clean combustion in a wide range of Audi, Volkswagen, BMW, Mercedes-Benz, Porsche, Suzuki, Isuzu, Daewoo, and Land Rover applications.

Mahle valve stem oil seal products are known for OE-focused sealing quality, and the SS45940A follows that approach with a metal-and-molded-rubber construction sized for accurate fitment. If you are servicing an Audi A4 Quattro, Volkswagen GTI, or BMW 540i, this part number is a direct match for many intake and intake/exhaust applications.

Key Features

• Mahle Valve Stem Oil Seal Kit, part number SS45940A
• Metal with molded rubber construction for durable sealing performance
• Upper inside diameter: 6 mm
• Inside diameter: 0.236 in; outside diameter: 0.48 in
• Height/thickness: 0.382 in; stem overall height: 9.7 mm
• Engine sealing component for intake and intake/exhaust positions
• Cross-reference: FEL-PRO SS 71163-1 for the same application

Detailed Description

The Mahle SS45940A is an engine valve stem oil seal set engineered for precise sealing at the valve stem. Its metal with molded rubber design helps maintain a consistent seal where the valve stem passes through the guide, using dimensions that align with the specified OE-style applications. This makes it a strong service part for engines that need accurate oil control in the valve train area.

Compatible With many Audi and Volkswagen platforms, including Audi Q7, A4 Quattro, A6 Quattro, A8 Quattro, Q5, S4, SQ5, and Volkswagen Golf R, GTI, Jetta, Tiguan, and Passat. It also cross-references OE and aftermarket numbers such as Audi 036 109 675 A and Volkswagen 036 109 675 A, helping simplify parts matching during engine repair.

What It Helps Address

• Oil consumption caused by worn valve stem seals
• Blue smoke on startup or after extended idling
• Oil fouling on spark plugs and combustion chambers
• Loss of sealing at the valve guide area
• Engine service needs during cylinder head repair or rebuild work

Installation Notes and Tips

Verify valve stem diameter, seal height, and application position before installation. This kit is used in intake and intake/exhaust locations depending on the vehicle and engine code, so confirm the exact fitment for your Audi A3, Audi A5 Quattro, Volkswagen Golf, or Mercedes-Benz C350 application before assembly. Clean the valve guide area thoroughly and inspect the valve stems for wear or scoring before installing new seals.

Quality Assurance

Mahle supplies sealing products trusted by OEMs and technicians worldwide, and the SS45940A reflects that OE-oriented engineering approach for engine sealing service.