Powerhead Rebuild Kit – Mercury / Mariner 40-50hp 4 Cyl

Description

Powerhead Rebuild Kit

We offer two kit options for this application.
A “Short Kit” which includes: Piston Kits (piston, Riken Rings, wrist pin & Clips), Complete Powerhead Gasket Kit with Crank Seals and Rod bolts.
A “Complete Kit” which includes everything in the short kit, plus contains all powerhead bearings!

The pistons in this kit are available in STD, .010″, .015″ .020″, 030″ & .040″ oversize. To order your kit, select your desired options, then click “add to cart”. If your cylinders require different size pistons, you will need to give us a call to place the order

Standard Bore size: 2.565″

Fits

Mercury / Mariner

20hp 1972-1979
40hp 1990-1997
50hp 1970-1985

Replaces: 9229A7, 5172A6, 72486A32