Description

When your 4030 series John Deere starts blowing blue smoke, running rough, or losing power under load, it’s telling you the heart of your tractor needs attention. High-hour engines eventually wear out cylinders, rings, and bearings—that’s just farming reality. This complete engine overhaul kit gives you everything you need to bring your workhorse back to factory spec and keep it earning its keep for years to come.

What You’re Getting

Complete sleeve and seal set that restores proper cylinder bore dimensions
New pistons with 3-ring design and keystone top compression ring for maximum sealing
Fresh pins, retainers, and bushings for smooth piston operation
Standard rod and main bearings to eliminate that bottom-end knock
Complete gasket set including head gasket and crankshaft seals to stop all leaks

Built for Real Farm Work

This kit is specifically designed for 6-cylinder, 329 cubic inch diesel engines found in John Deere 4030 series tractors. These are the reliable workhorses that handle everything from loader work to heavy field operations, pulling implements through tough conditions day after day.

Made to Last

Tru-Power components are built to meet OEM specifications and handle the stress of diesel operation. The 4.02 inch standard bore sleeves restore proper compression, while the keystone top compression rings provide superior sealing under the high pressures these engines generate.

Installation Notes

This is a basic overhaul kit, so you’ll need to check rod bolt length and add either TP-R74194 (2.125 inch) or TP-R80033 (2.325 inch) rod bolts based on your specific engine. Plan on machine shop services for boring cylinders to fit the sleeves and checking clearances on bearings.