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 .015/.030/.040 Oversize Pistons, so please specify when placing an order.
This rebuild kit is designed for use with Mercury/Mariner 135/150/175 HP DFI 2.5L Optimax Powerheads that use a 600-Series Connecting Rod and feature O-Ringed Heads.
Six Pistons [Complete with rings, pins, and clips]
One Gasket Kit [including 1 Drive Housing Gasket, 1 Base Gasket, 1 Drive Plate Gasket, 1 Reed Block Gasket, 1 Plate Gasket, 1 Divider Plate Gasket, 1 Upper End Cap O-Ring, 1 Lower End Cap O-Ring, 6 Head Inner O-Rings, 2 Head Outer O-Rings, 1 Throttle Body O-Ring, 1 Fuel Pump Gasket, 2 Relief Valve Gaskets, 2 Case Half Gaskets, 1 Thermostat Gasket, 1 Divider Hose Seal, and 3 End Cap Oil Seals]
Main Bearings [One Upper, Two Center, and One Lower]
Rod Bearings [Six Upper and Six Lower]
Twelve 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.
