Description
When you’re dealing with blow-by, oil burning, or that telltale blue smoke out the exhaust, your pistons and rings are telling you it’s rebuild time. Years of faithful service where heat cycles and constant loads have taken their toll eventually wear down even the toughest diesel engines. This complete piston and ring kit gives you everything needed to bring that 4-390 engine back to factory compression and performance.
What You’re Getting
- Complete set of pistons, pins, and pin retainers for all four cylinders
- Full ring sets including compression rings and oil control rings for proper sealing
- Standard bore size maintains original engine specifications
- Everything packaged together so you don’t need multiple part numbers or trips to the parts counter
- Quality construction designed to handle the demands of diesel engine operation
Built for Real Farm Work
The 4-390 is a proven four-cylinder naturally-aspirated diesel that’s powered countless hours of farm work. Four-cylinder diesel tractors are the workhorses on many farms – compact enough for orchard work and powerful enough for serious field duties. Whether it’s running a PTO-driven implement, pulling cultivation equipment, or handling loader work, this engine delivers the reliable power farmers count on.
Made to Last
Multi-layer steel construction with specialized coatings handle the extreme pressures and temperatures in diesel engines. The pistons are built to withstand the compression ratios and combustion pressures that diesel engines generate, while the ring sets provide the proper seal between piston and cylinder wall for years of dependable service.
Good to Know
This is a complete engine-out rebuild project that requires proper machine shop work including bore inspection and honing. Make sure you’ve found why the original failed, have the block checked for cracks and wear at a machine shop, and follow proper procedures for piston installation and ring gap settings. Take your time during assembly – proper preparation and installation are what make the difference between a rebuild that lasts and one that comes back apart.
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