Featuring all the parts needed to effectively rebuild an outboard powerhead in one convenient package, our powerhead rebuild kits offer a combination of cast WSM Pistons complete with Japanese rings, pins, and clips, the highest quality gaskets available, and the necessary crank bearings, rod bearings, and rod bolts. These kits are available with Standard-Size Pistons or .010/.015/.020/.030/.040 Oversize Pistons, so please specify when placing an order.
This rebuild kit is designed for use with Mercury/Mariner 40/45/50 HP 4-Cylinder Powerheads with a 2.565" Bore Size; this kit will fit 1970-1985 50 HP, 1986-1989 45 HP, and 1990-1997 40 HP Models. The kit includes the following:
Four Pistons [Complete with rings, pins, and clips]
One Gasket Kit [including 1 Head Gasket, 1 Head Gasket (Late), 1 Base Gasket, 1 Adaptor Plate Gasket, 2 Carb Gaskets, 2 Transfer Port Gaskets, 1 Water Tube Gasket, 2 Exhaust Gaskets, 3 O-Rings, and 3 Seals]
Main Bearings [One Upper, One Center, and One Lower]
Rod Bearings [Four Upper and Four Lower]
Eight Rod Bolts
SHIPPING: Additional shipping fees to Alaska, Hawaii, US Territories, or International Shipping will be calculated after checkout. You will receive an email and a PayPal money request for the additional shipping charges at the email address provided. (Some items are excluded from international shipping)
If you have any questions, please contact us through e-mail at customerservice@marinepartswarehouse.com. Please provide your engine model number to help confirm compatibility.
