Description

When your Ford tractor’s compression is dropping and she’s starting to blow a little oil smoke, it’s time to face the music – your engine needs pistons. Always check bore wear and taper before ordering – excessive wear requires boring to oversize. This .020″ oversize piston is exactly what you need when your cylinders have been bored out to bring them back to proper specs, giving your engine a fresh start for years of reliable service.

What You’re Getting

Precision-machined .020″ oversize piston sized for 4.2″ bore cylinders
TISCO quality construction that meets or exceeds OEM specifications
Direct replacement design that fits properly with correct ring grooves and compression ratio
Oversize design compensates for cylinder boring, restoring proper piston-to-wall clearance

Built for Real Farm Work

This piston fits Ford New Holland tractors with 4.2″ bore engines that have been machined oversize during rebuild. Whether your tractor hauls grain, runs a loader, or pulls implements through tough ground, a properly rebuilt engine with quality pistons delivers the power and reliability you depend on. For 800, 801, 900, 901, 4000 Tractors (1963-1964). These workhorses need quality parts to keep delivering dependable power season after season.

Made to Last

Engine rebuilds are expensive, so you want pistons that’ll go the distance. This TISCO piston is manufactured to handle the heat, pressure, and constant movement that comes with diesel engine operation. The alloy construction and precision ring grooves ensure proper sealing and long service life, so your rebuild investment pays off for years.

Installation Notes

Replace connecting rod bearings during rebuild. Have cylinder head checked for flatness and valve work. Installing oversize pistons requires proper machine work – your cylinders need to be bored and honed to the correct oversize dimension. Most engine rebuilders will handle this as part of a complete overhaul, ensuring everything fits together properly for maximum engine life.