Over 30 yr background in marine parts and repairs.
All are fresh water
Parts from over 15 boats:
Mercruiser- 3.0, 5.0, 5.7, 7.4
OMC- 3.0,5,0,5.7,7.5
Yamaha- 3.0
More: steering, shifters, hardware, exhaust, fuel tanks, trim pumps, gimbal housing, trim cylinders, windshields etc.