When you’re pulling the engine apart for a rebuild, finding worn cylinders that need to be bored oversize is just part of the process. Whether it’s ring groove wear from years of hard work or cylinder scoring that needs attention, this .50mm oversized piston and ring set gets you back to proper compression and oil control. You’ll get the matched piston and rings you need to finish the job right the first time.
What You’re Getting
- Complete piston and ring set designed specifically for .50mm oversized cylinder bore
- Precision-fitted rings that provide proper compression and oil control
- Quality construction that matches OEM specifications for reliable long-term service
- Direct replacement for worn or damaged standard pistons in Kubota engines
Built for Real Farm Work
This oversized piston set is engineered for Kubota engines that power compact tractors, utility tractors, and skid steers used in agriculture and construction. When your engine’s been running hard for thousands of hours, cylinder wear is normal—and boring cylinders oversize is often the most cost-effective way to get back to like-new performance.
Made to Last
These pistons are built to handle the demands of diesel engine operation, with materials and tolerances that ensure proper heat transfer and long service life. The rings are designed to seat properly in your freshly bored cylinders and provide the compression you need for reliable starting and full power output.
Good to Know
When you’re doing an oversize rebuild, make sure your machine shop checks cylinder taper and out-of-round before boring. This piston requires cylinders bored to exactly .50mm oversize—not .020″ which is close but not the same. Take your time with ring installation and follow proper ring gap procedures for best results.








