Description

When your old diesel is starting to smoke a bit on startup or you’ve noticed oil consumption creeping up, it’s time to think about piston rings. After thousands of hours of moving dirt, pulling planters, and running PTOs, even the best engines lose compression as rings wear down. This piston ring set brings that 329 cubic inch diesel back to spec with the proper sealing that restores power and stops the oil burning.

What You’re Getting

Complete ring set for one cylinder with keystone compression ring for superior sealing
Precision 4.02-inch bore sizing that matches your engine specifications exactly
Three rings per cylinder: 1/8-inch keystone top ring, 3/32-inch second ring, and .197-inch oil control ring
Quality construction designed to handle the heat and pressure of diesel operation

Built for Hard-Working Diesels

This ring set fits the 329 CID 6-cylinder diesel engines found in various tractors up to serial number 277549. These engines powered workhorses that handled everything from heavy tillage to PTO-driven equipment. Whether your tractor is pulling a 5-bottom plow through tough ground or running a big baler all day, this diesel needs proper compression to deliver the torque you depend on.

Made to Last

Diesel engines run hot and work hard, so these rings are built to handle the punishment. The keystone design on the top compression ring provides better sealing and longer life than standard rectangular rings. The materials and tolerances are engineered specifically for the demanding environment inside a diesel cylinder where temperatures and pressures run high.

Installation Notes

Ring installation requires proper tools and technique—this isn’t a job for shortcuts. Make sure your cylinder walls are in good shape before installing new rings, as worn bores will eat up new rings quickly. Gap the rings according to specifications, and use a ring compressor for installation to avoid breaking them. While you’re in there, it’s smart to check your rod bearings and main bearings too.