Valve Stem Seal - 6mm Stem Valves

This 6mm valve stem oil seal controls the amount of engine oil passing down the valve guides, preventing oil from entering the combustion chamber while still providing essential lubrication to the valve stem. Worn or hardened seals commonly cause blue smoke on start-up, increased oil consumption, and fouled spark plugs. Replacing valve stem seals is a key step during cylinder head rebuilds or top-end repairs.

Manufactured to current OE specification, this seal supersedes older part numbers, ensuring you receive the latest design for improved durability and long service life. Supplied individually—please select the correct quantity for your engine.

Quantity Required (per engine)

• 4-cylinder: 16 seals

• 5-cylinder: 20 seals

• 6-cylinder: 24 seals

Technical Details

• Type: Valve stem oil seal

• Stem size: 6mm

• Quantity: Sold individually

• Notes: Latest superseding specification (replaces older numbers incl. 99610511552)

Fitting Notes

• Best replaced during head overhaul or valve service

• Inspect valve guides for wear before fitting new seals

• Use correct installation tool to avoid seal damage

Vehicle & Engine Fitment Summary

Volkswagen

• Golf Mk4 / Bora (1998–2004)

  • 1.4/1.6 16V: AHW, AKQ, APE, AXP, ATN, AUS, AZD

  • 1.6: AUV

  • 1.8: AGN, AGU, AUM

  • 2.3: AQN

  • 2.8 VR6: AQP, AUE

• T5 (2003–2015)

  • 3.2 VR6: BDL, BKK, CFLA

  • 2.0 TSI: CJKB

• T6 (2016–2020)

  • 2.0 Petrol & Diesel

• Polo

  • 1.4 16V: AFH

  • 1.6 16V: AJV

Porsche

• Boxster (986): 1997–2004

• Boxster (987): 2005–2012

• Cayman (987C): 2006–2012

• 911 (996): 1998–2005

• 911 (997): 2005–2012