Description
When your 4TA-390 engine starts burning oil, losing compression, or just isn’t pulling like it used to, worn pistons and rings are often the culprit. When your diesel tractor is losing compression, burning oil, or just not running with the power it used to, worn piston rings are often the culprit. This complete kit has everything you need to restore your engine’s heart—pistons, rings, pins, and retainers all in one package, ready to bring that 4-cylinder turbo diesel back to life.
What You’re Getting
- Complete set for all four cylinders—no need to hunt down individual parts
- Precision-machined pistons designed for the high demands of turbocharged operation
- Quality rings that maintain proper compression under turbo boost conditions
- Pins and retainers included so you have everything for a complete rebuild
- Direct replacement parts—no modifications or adapters needed
Built for Turbocharged Power
This ring set is designed for diesel tractor engines that power the equipment you depend on every day. The 4TA-390 turbocharged and aftercooled diesel is a workhorse engine found in mid-size to larger tractors that handle everything from heavy tillage to loader work. Whether you’re running tillage tools, hay equipment, or loader attachments, proper compression is what gives your tractor the pulling power to handle tough jobs without strain.
Made to Last
TISCO builds their piston rings to handle the harsh conditions inside diesel engines – high compression ratios, constant heat cycling, and the contaminants that come with farm work. These rings are manufactured to maintain proper tension and sealing through thousands of operating hours. The pistons are engineered to withstand the added stress that comes with turbocharging, where combustion pressures run higher than naturally aspirated engines.
Installation Notes
This is a complete engine teardown job that requires machine shop work for proper honing and cleaning. Make sure your cylinder bores are within spec before assembly—worn cylinders will eat new rings quickly. Take your time with ring installation and use proper ring compressors to avoid damage. Check piston-to-bore clearances carefully since turbocharged engines run tighter tolerances than naturally aspirated ones.
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