Description

When your 404 cubic inch diesel engine starts burning oil or losing compression, worn piston rings are usually the culprit. These three rings per cylinder work together to seal combustion pressure, control oil consumption, and keep your engine running strong season after season. This complete set gets you everything you need for one cylinder, with the exact ring configuration your engine was designed around.

What You’re Getting

4-1/4 inch bore rings precision-manufactured for proper cylinder seal
Keystone compression ring (1/8 inch) provides superior sealing under high pressure
Secondary compression ring (3/32 inch) controls blowby and oil migration
Oil control ring (3/16 inch) regulates lubrication and prevents oil burning
Quality construction designed to handle the heat and pressure of diesel operation

Built for Real Farm Work

This ring set is engineered for 404 CID 6-cylinder diesel engines found in various farm tractors and industrial equipment. These engines typically power mid-range to heavy-duty tractors used for field work, loader operations, and implement pulling. Whether you’re running cultivation equipment, hay machinery, or grain handling gear, this engine configuration has been a reliable workhorse for decades.

Made to Last

These rings are built to handle the demanding conditions of diesel operation – high compression ratios, heavy loads, and extended operating hours. The materials and coatings are selected to resist wear from combustion byproducts and maintain proper sealing even as engine hours accumulate.

Installation Notes

This is engine-out work that requires proper ring installation tools and careful attention to ring orientation. The keystone ring has a specific top and bottom, and proper end gap clearance is critical for long life. Check your cylinder bore condition and consider having the cylinders honed if there’s any glazing or wear patterns.