Basic Engine Overhaul Kit for International Harvester M Series, MV, O6, OS6, and W6 Series Tractors

Description

When you’ve got an old International Harvester tractor that’s been a reliable workhorse for decades, the last thing you want is to see it sidelined with worn-out cylinders, rings, or gaskets. If your M series, MV, O6, OS6, or W6 is showing signs of low compression, excessive oil consumption, or blowby, this basic engine overhaul kit gives you everything you need to bring that trusty 248-cubic-inch gas engine back to life without the expense of a complete rebuild.

What You’re Getting

• Complete cylinder sleeves and sleeve seals to restore proper bore size and compression
• High-compression stepped-head pistons with rings, pins, and retainers for reliable power
• Pin bushings to eliminate wrist pin wear and noise
• Complete gasket set plus crankshaft seals to stop all those annoying leaks
• Includes 4-inch overbore sleeves if your block needs extra cleanup

Built for Real Farm Work

This kit is designed specifically for the 4-cylinder, 248 CID gas engines found in International Harvester’s M series utility tractors, MV industrial models, and the O6, OS6, and W6 series machines. These are the tractors that built American agriculture—tough, simple, and built to last. Whether you’re using yours for hay work, cultivation, or just keeping the place maintained, this overhaul kit helps restore the power and reliability these machines were known for.

Made to Last

Tru-Power builds this kit to match original factory specifications while using modern materials and manufacturing techniques. The stepped-head pistons provide better compression than worn originals, and the sleeve seals are designed to handle the thermal cycling and vibration that come with farm use.

Good to Know

This is a basic kit, so you’ll need to source main and rod bearings separately based on your crankshaft’s condition. The kit includes both standard 3-7/8 inch bore and 4-inch overbore sleeves, giving you options depending on your block’s condition. This is major engine work that requires proper tools and experience, but for someone comfortable with engine rebuilding, it’s a straightforward way to give your old IH another lifetime of service.