Upper drive belt deflection roller.

To fit:
Boxster (986) 2.5-2.71997-2004 Manual and Tiptronic
Boxster (986) S 3.4 1997-2005 Manual and Tiptronic
Boxster (987) 2.7 2005-2008 Tiptronic transmission only
Boxster (987) S 3.4 2005-2008 Tiptronic transmission only
Cayman (987C) 2.7 2006-2008 Tiptronic transmission only
911 (996) C2/C4/C4S 3.4-3.6 2002-2005 Tiptronic transmission only
911 (997) 3.6 2005-2008 Tiptronic

This part number supersedes older part numbers:

- 99610211853, 99610211855