Description
Nothing kills an engine rebuild faster than cheap piston rings that won’t seal or wear out after one season. When you’re looking at cylinder hone marks and pulling pistons out of your John Deere, you want rings that’ll hold compression and keep oil where it belongs. This TISCO ring set gives you the proper seal for reliable power and oil control in your 239 or 276 CID diesel engine.
What You’re Getting
- Complete three-ring set for one cylinder with proper keystone compression ring design
- 4.19″ bore diameter sized exactly for your John Deere diesel specifications
- Three different ring profiles: 1/8″ keystone top ring, 3/32″ second ring, and 9/64″ oil control ring
- TISCO quality construction that matches OEM specifications for fit and durability
- Precision gap settings that provide proper compression without binding
Built for Real Farm Work
These rings fit the workhorse engines that power many John Deere tractors from the era when these machines were built to last decades. The 239 CID naturally aspirated diesel, 239 CID turbocharged and aftercooled version, and 276 CID diesel all use this same ring configuration. Whether you’re running a row-crop tractor for corn and beans or a utility model for hay and cattle work, these engines need rings that can handle the constant load changes and long operating hours that come with farm life.
Made to Last
The keystone-shaped top compression ring is designed to self-clean as it works, preventing carbon buildup that causes ring sticking. The materials are heat-treated to resist wear while maintaining the spring tension needed for proper sealing. These rings are built to handle the thermal cycling and combustion pressures that diesel engines dish out day after day.
Installation Notes
Make sure your cylinders are properly honed to the right finish before installation—rings need the correct surface to seat properly. Check your ring end gaps according to John Deere specifications, and don’t forget to stagger the gaps when you install them. Take your time with the oil control rings since they’re the easiest to damage during installation.
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