OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives
Updated May 3 2026
P/N 12050
9.9 and 15 hp Johnson outboard models Replaces 394711, Sierra 18-3327, Mallory 9-48201
4 stroke8 hp. 19959.9 – 15 hp.1995 – present
2 stroke9.9 – 15 hp.1974 – 1996
P/N 87605
9.5 hp. Suffix 1958 – 196710 hp. 1958 – 1967 seal kit
P/N 87602OEM 3963502 stroke9.9 – 15 hp. 1974 – present4 stroke9.9 – 15 hp. 1974 – present
P/N 87618
9.5 hp. M Suffix 1967 – 1973
P/N 89770
Impeller replacement
For kit P/N 120504 stroke8 hp. 19959.9 – 15 hp.1995 – present
P/N 39380
replaces 394546
2 Cylinder, 2 stroke
9.9 hp – 15 hp
1974 – 1992
P/N 39353
replaces 436358
2 Cylinder 4 stroke
1993 up
P/N 24410, 24420, 24430
Outboard replacement pistons for Johnson and Evinrude
5006670, 5006662
2 Cylinder crossflow 2 stroke
1981 – 1992
P/N 24500, 24520
437776, 437777
1995 – 2002
Your shopping cart is currently empty.