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 225/250 HP 3.0L Carbureted/EFI Powerheads from 1994-2003; this kit fits powerheads with Double Roller Center Mains.

Six Pistons [Complete with rings, pins, and clips]

One Gasket Kit [including 2 Head Outer O-Rings, 6 Head Inner O-Rings, 1 Exhaust Plate Gasket, 6 Carburetor Gaskets, 3 Adaptor Plate Gaskets, 2 Thermostat Gaskets, 1 Reed Block Gasket, 1 Lower Crank O-Ring, 1 Lower Cap O-Ring, 1 Upper Crank O-Ring, 1 Fuel Pump Gasket, 2 Relief Valve Gaskets, 1 Upper Crank Oil Seal, and 2 Lower Crank Oil Seals]

Main Bearings [One Upper, Two Center, and One Lower]

Rod Bearings [Six Upper and Six Lower]

Twelve Rod Bolts

This item is eligible for Free Shipping to locations in the Lower 48. Increased fees will apply for Alaska, Hawaii, other US Territories, and International Shipping. 

If you have any questions or you wish to place an order, please send us an eBay message. Our shop is open from 9AM-4PM CST Monday-Friday. We will respond to your eBay messages as soon as we can during business hours.. To ensure that the proper product is ordered, it will be helpful to have your motor's model number available.