This WSM powerhead rebuild kit is for the later Mercury and Mariner 3-cylinder 50-60 HP family. The standard kit uses a 2.992-inch bore and covers the regular 50, 55, and 60 HP applications plus the 60 HP BigFoot range listed below.
Fitment
- Mercury/Mariner 50 HP 3-cylinder, 2.992-inch bore: 1998-2007
- Mercury/Mariner 55 HP 3-cylinder, 2.992-inch bore: 1998-2007
- Mercury/Mariner 60 HP 3-cylinder, 2.992-inch bore: 1998-2007
- Mercury 60 HP BigFoot 3-cylinder: 1997-2004
Technical Specifications
- WSM standard-size kit: 100-06-10
- 3-cylinder powerhead
- 2.992-inch standard bore
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 base gasket, 3 carburetor gaskets, 1 reed-block gasket, 1 manifold gasket, 1 lower end-cap O-ring, 3 thermostat gaskets, upper/lower end-cap oil-seal components, 1 upper seal, and 1 lower seal
- 1 upper main bearing, 2 center main bearings, and 1 lower main bearing
- 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.
