MerCruiser 850458 845668T 811549 Oil Pan Assembly 454 502 7.4L 8.2L V8 BBC 91-00 18hp The easy way to tell

The easy way to tell between a mechanical shift & hyrdo-mechanical shift drive is that the hydro-mechanical ones do not have the visible anode square chunk next to the six little holes on each side toward the rear of the lower unit

0L 140hp 181cid (1982-some 1992) Should likely be similar to 987784 & 3850799 for the other 1992-1994 models

Exhuast Outlet Skeg 308333

Left-Hand Rotation

but would have the wrong stickers

MerCruiser 850458 845668T 811549 Oil Pan Assembly 454 502 7.4L 8.2L V8 BBC 91-00 18hp The easy way to tellPart Number(s) Included 850458 Oil Pan Assembly (1996 1997) Replaced 811549 (1991 1996) Superseded to 845668T (1998 2000ish) General Application Compatibility Found on quite a few MerCruiser GM V8 BBC Models 454 7. 4L 502 8. 2L model 1996 1997 but also 1991 2000's as those other part numbers If you are unsure of compatibility, please contact us or check with a parts diagram for your engine. Other Details Freshwater Used Parts Removed from a MerCruiser