Delco Top Mount PMGR High Torque used on Reverse Rotation Mercruiser & Others 9-Tooth 

Delco Top Mount CLOCKWISE ROTATION PMGR High Torque STARTER used on Reverse Rotation Engines; Mercruiser, OMC, Crusader & Others 9-Tooth
For Inboard Engines only
Mercury Marine# 50-808011A05 50-808011A4
Arco# 30459
Sierra#18-5603
Delco# 9000888
Mercruiser Engines:
Model 350 Mag MPI (Gen +) GM 5.7L - 350ci - 8cyl 1998-2004
Model 350 Mag MPI Horizon GM 5.7L - 350ci - 8cyl 1999-2006
Model 350 Mag MPI MIE (Gen +) GM 5.7L - 350ci - 8cyl 1998-1999
Model 454 Mag MPI Horizon (Gen VI) GM 7.4L - 454ci - 8cyl 1998-2004
Model 5.7L EFI (Gen +) MIE GM 5.7L - 350ci - 8cyl 1997-2005
Model 5.7L MIE GM 5.7L - 350ci - 8cyl 1997-2006
Model 500 Bulldog GM 8.9L - 540ci - 8cyl 1997-2001
Model 8.1S HO GM 8.1L - 496ci - 8cyl 2001-2008
Model 8.1S Horizon GM 8.1L - 496ci - 8cyl 2001-2008
Model 8.2L MIE MPI (LH) (Gen VI) GM 8.2L - 502ci - 8cyl 2000-2007
Model 800SCI 2002-2009
Model 900SC GM 9.0L - 542ci - 8cyl 1999-2002
Model 454 Mag MPI Horizon GM 7.4L - 454ci - 8cyl 2001-2008
Model 5.7L EFI (Gen +) GM 5.7L - 350ci - 8cyl 1998-2004
Model MX 6.2L MPI GM 6.2L - 377ci - 8cyl 2001-2008
Model MX 6.2L MPI Horizon GM 6.2L - 377ci - 8cyl 2001-2008
Volvo Penta Engines:
5.7GiL 8cyl, 350ci, 5.7L Gas 2000-2007
5.7GSiL 8cyl, 350ci, 5.7L Gas 2000-2002
5.7GXiL 8cyl, 350ci, 5.7L Gas 2000-2007
8.1GiL 8cyl, 496ci, 8.1L Gas 2000-2007
8.1GSiL 8cyl, 496ci, 8.1L Gas 2000-2002
8.1GXiL 8cyl, 496ci, 8.1L Gas 2000-2007