This WSM powerhead rebuild kit is for Mercury and Mariner 50 and 60 HP 3-cylinder low-dome crossflow outboards from 1984-1990. It uses the 2.875-inch bore family and includes the major internal components required for a powerhead overhaul.
Fitment
- Mercury/Mariner 50 HP 3-cylinder low-dome crossflow: 1984-1990
- Mercury/Mariner 60 HP 3-cylinder low-dome crossflow: 1984-1990
Technical Specifications
- WSM standard-size kit: 100-15-10
- 3-cylinder low-dome crossflow powerhead
- 2.875-inch standard bore
- The broader 100-15 kit family also has older 70 HP applications; this listing is scoped to the 50/60 HP 1984-1990 application shown in the store
Piston Size Options
- Standard
- .010 oversize
- .015 oversize
- .020 oversize
- .030 oversize
- .040 oversize
Measure the finished cylinder bore before selecting piston size.
Complete Kit Includes
- 3 WSM piston kits with rings, wrist pins, and clips
- Complete gasket kit: 1 head gasket, 1 adapter-plate gasket, 1 base gasket, 1 water-housing tube seal, 1 transfer-port gasket, carburetor gaskets, 2 exhaust gaskets, 1 baffle-plate gasket, 1 exhaust-tube gasket, upper and lower end-cap O-rings, crankcase gaskets, end-cap seals, and 1 transfer-passage-cover gasket
- 2 upper/lower main-bearing components and 2 center main bearings
- 3 upper and 3 lower connecting-rod bearings
- 6 connecting-rod bolts
Fitment Note
Outboard applications can vary by horsepower, year, bore size, rod-guidance style, and model or serial range. Compare the fitment and technical details above with your engine before ordering.
Questions About This Product?
Have questions about this product? Email us at customerservice@marinepartswarehouse.com and include your motor information with your question.
