Description
When your John Deere’s 6-cylinder turbocharged diesel starts burning oil, knocking, or losing power, it’s time for a complete rebuild. This isn’t the kind of job you put off—every day you wait, the damage gets worse and the repair gets more expensive. This Tisco major overhaul kit gives you everything you need to bring that 466 cubic inch powerplant back to life.
What You’re Getting
- Complete sleeve and piston assembly with 3-ring design including keystone top compression rings for better sealing
- Standard rod and main bearings, connecting rod bolts, pins, retainers, and bushings—all the rotating assembly parts
- Full gasket set and crankshaft seals to keep everything sealed up tight
- 4.56 inch standard bore sleeves with seals for a factory-fresh cylinder bore
- Quality Tru-Power components that meet OEM specifications
Built for Real Farm Work
This kit rebuilds the heart of some of John Deere’s most dependable tractors—from the versatile 4250 and 4440 row-crop machines to the powerful 4640 and 4650 models that handle the heavy pulling. It also fits the 6620 and 7720 combines that harvest thousands of acres every season. These are the engines that built American agriculture, and they’re worth rebuilding right.
Made to Last
Tru-Power builds their overhaul components to handle the heat, pressure, and constant stress of turbocharged diesel operation. The keystone compression rings provide superior sealing under boost, while the standard bearings are manufactured to original clearances. You’re getting the same quality that went into the engine when it rolled off the factory floor.
Good to Know
This is a major overhaul kit, which means you’ll need to pull the engine and completely disassemble it. Make sure your machine shop checks the crankshaft and cylinder block for wear—sometimes additional machining is needed. Having the injectors professionally cleaned and tested while the engine’s apart is always good insurance for a successful rebuild.
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