This camshaft adjuster seal restores proper oil pressure to the hydraulic timing chain tensioner used in late Porsche Boxster and 996/997 engines. By preventing leaks at the adjuster housing, it helps maintain the precise chain tension needed for accurate valve timing and long-term engine reliability.

To fit:

911 (996) 3.6 2002-2005

911 (997) 3.6, 3.8 2005-2008

Boxster (986) 2.7, 3.2 2003-2004

Boxster (987) 2.7, 3.2, 3.4 2005-2008

Cayman (987C) 2.7, 3.4 2006-2008