Basic In-Frame Engine Overhaul Kit for Allis Chalmers D-Series Tractors

Description

When your Allis Chalmers D-series starts burning oil, losing compression, or just doesn’t have the power it used to, it’s time for more than a tune-up. An engine overhaul brings back that reliable performance you’ve been missing, and this basic in-frame kit gives you the core parts to get your tractor back to earning its keep without pulling the whole engine.

What You’re Getting

• Complete set of sleeves, pistons, rings, and pins for a thorough rebuild
• Valve-grind gasket set plus oil pan gasket to seal everything up tight
• Available for both 138 CID and 149 CID 4-cylinder gas engines
• Standard bore and overbore options to handle worn cylinder walls
• Tru-Power quality parts that match original specifications

Built for Real Farm Work

This kit fits the D10, D12, D14, and D15 series tractors—the workhorses that handled everything from cultivating to belt work on farms across the country. These tractors were built when things were made to last, and with the right parts, they’ll keep running for decades more. Whether you’re using yours for field work, powering a sawmill, or just keeping it running for the next generation, this kit gets you back in business.

Made to Last

Tru-Power has been rebuilding engines since farmers started fixing their own equipment. The pistons are properly sized, the rings seat correctly, and the sleeves are machined to handle the heat cycles and constant vibration that come with tractor work. This isn’t just about getting it running—it’s about getting it running right.

Good to Know

This is an in-frame kit, which means you can do the work with the engine still mounted in the tractor. You’ll need to order engine bearings separately since bearing clearances vary depending on your engine’s condition. The overbore option gives you flexibility if your cylinders need more cleanup than expected.