Description

When you’re rebuilding a worn-out diesel engine, having the right oversize pistons can mean the difference between a quick fix and a proper long-term repair. If your Ford’s 256 cubic inch diesel is burning oil, down on power, or making that telltale knocking sound, this .020″ oversize piston helps you get back the compression and performance you need without a complete engine replacement.

What You’re Getting

Precision-machined .020″ oversize diameter fits properly machined cylinder bores
Heavy-duty construction built to handle the demands of diesel combustion pressures
Quality TISCO manufacturing ensures reliable performance and proper fit
Direct replacement design works with your existing connecting rods and pins

Built for Real Farm Work

This piston is designed for Ford’s 4-cylinder diesel engines with 256 cubic inch displacement and 4.4 inch bore size. These are the workhorses found in Ford 5000, 5600, 6600, and 7600 series tractors that handle everything from hay operations to heavy fieldwork across American farms. Whether you’re running a mid-size operation or managing a larger spread, these engines are built to deliver reliable power day after day.

Made to Last

Diesel engines put tremendous stress on pistons with higher compression ratios and combustion pressures than gas engines. This oversize piston is engineered to handle those demands while providing the tight tolerances needed to restore proper compression and oil control. The .020″ oversize allows your machinist to clean up cylinder wear while maintaining the engine’s original performance specifications.

Good to Know

Using oversize pistons requires having your cylinders bored and honed to the proper dimension – this isn’t a job for the average farm shop. Make sure your machine shop understands diesel engine tolerances and has experience with Ford tractor engines. You’ll also want to check your connecting rods and crankshaft while you’ve got the engine apart, as these components often need attention during a rebuild.