Crankshaft oil seal for the rear of the engine (gearbox end).

To fit:
911 3.0-3.2 1978-1989
911 (930) Turbo 1978-1989
911 (964) C2/C4//RS/Turbo 3.3-3.6 1989-1994
911 (993) C2/C4/Turbo 3.6 1994-1998
911 (996) Turbo/GT2 3.6 2001-2005
911 (996) GT3 1999-2001
911 (997) Turbo/GT2 2007-2011
924S 2.5 1986-1988
944 2.5, 2.7, 3.0 1982-1991
968 3.0 1992-1995
928 4.5, 4.7, 5.0, 5.4 1978- 1995
959 2.85 1987-1988