OMC Cobra Gearcase Mounting Bolt Set 330139 331999 0331999 Upper Lower Stringer Dipsticks and Tubes just look at the actual

just look at the actual part or check your drive number

very clean inside

1989 & 1990 Models OMC Part Numbers (from diagram):

but I want to say it was a 1988 based on the 2-piece oil block that came off of it

OMC Cobra Gearcase Mounting Bolt Set 330139 331999 0331999 Upper Lower Stringer Dipsticks and Tubes just look at the actualItem Details Omc Cobra Sterndrive Overall good condition You will receive a simpler set of 4 of these may have different colors of paint. Please ask if you have any other questions on compatibility Part Numbers Included OMC: 330139 0330139 331999 0331999 Compatibility This will work for all engine configurations from that time period Just a short list below 2. 5L 120hp 4cyl 3. 0L 140hp 4cyl 4. 3L V6 5. 0L V8 305 5. 7L V8 350 5. 8L V8 7. 4L Purchase