Guide tube for the clutch release bearing.

To fit:
911 1987-1989 Carrera 5 Speed G50 00/01/02
911 (964) C2, C4, Turbo 1989-1994
911 (993) C2, C2S, C4, C4S, Turbo 1994-1998
911 (996) Turbo 2001-2005
911 (996) GT3 Road Version 2000-2005
911 (997) Turbo 2007-2013
911 (997) Turbo GT2 2008-2009
911 (997) GT2RS 2011
911 (997) GT3, GT3RS 2007-2011