Note some older OMC stern drive parts with high profile upper drive shafts have short spline
area of 1 inch and newer water pump shafts 1 1/4 inch spline will not fit in it.
Below is a low profile OMC stern drive unit marine engine years 1972
thru 1986 Click on picture for aftermarket OMC parts and tech support
omc upper gear case
is a high profile OMC stern drive unit marine engine years 1967 thru 1974. Some later year outdrive units have true coarse
steering in them. Most OMC stern drives in this time frame were fitted with right hand worm gears.
High profile V8 outdrive 21-16 gear set
T.C.Electronics/Marine order desk number (416) 751-7326
* 21 Canadian road unit 17* Toronto Ontario * Canada * M1R-5G2