Description

When your trusty Allis Chalmers starts burning oil, losing compression, or making noises it shouldn’t, you know it’s time for a rebuild. That 201 cubic inch gas engine has been the heart of countless farm operations, but after decades of hard work, even the toughest engines need attention. This complete overhaul kit gives you everything to bring your orange workhorse back to factory specs.

What You’re Getting

Complete rebuild in one box—sleeves, pistons, rings, gaskets, valves, springs, guides, and keys
Standard 4-inch bore with 4-1/8 inch overbore option for worn cylinders
Fresh intake and exhaust valves with matching springs and guides for proper sealing
Quality gasket set that handles the heat cycles and vibration these engines see
Tru-Power components built to OEM specifications for reliable performance

Built for Real Farm Work

This kit fits the legendary Allis Chalmers W Series lineup—the W, W25, WC, WD, and WF tractors that defined mid-century farming. Whether you’re running a WC for cultivation work, a WD for heavy field operations, or a WF for row crops, these were the tractors that helped feed America through some tough times.

Made to Last

These aren’t bargain-basement parts. The Tru-Power brand means you’re getting components that’ll handle another generation of farm work. The sleeves are precision-machined for proper clearances, the pistons are built to take the heat, and the valve train components are engineered to keep your engine breathing properly for years to come.

Installation Notes

This is a complete teardown job that’ll require machine shop work for boring and honing if you’re going with the oversize pistons. Most folks take the block to their local shop for the machine work, then handle the assembly themselves. Having the cylinder head checked for cracks and surfaced while you’re at it is always smart money spent.