Description
When you hear that telltale knock from the engine bay or notice blue smoke trailing behind your 4030 during field work, it’s time to face facts—your 6-cylinder diesel needs more than an oil change. This basic engine overhaul kit gives you everything needed to bring that 329 cubic inch powerhouse back to life, minus the bearings so you can check clearances and order exactly what you need.
What You’re Getting
- Complete sleeve and seal set that restores proper bore dimensions and compression
- New pistons with rings designed for standard compression engines (marked with “B”)
- Fresh gasket set that seals everything up tight from top to bottom
- Pin bushings, retainers, and crankshaft seals for a thorough rebuild
- Quality Tru-Power components that meet OEM specifications
Built for Real Farm Work
This kit fits the 4.02-inch standard bore engines in John Deere 4030 and 2840 series tractors—workhorses that have logged thousands of hours pulling planters, combines, and heavy implements. These are the tractors that built many farming operations, handling everything from row crop work to heavy tillage when reliability mattered most.
Made to Last
Tru-Power has been rebuilding farm engines for decades, and this kit shows their experience. The sleeves are properly sized and the pistons are built to handle the heat and pressure of diesel combustion. You’re getting parts that’ll stand up to long days and heavy loads just like the original components did.
Good to Know
Remember to check your connecting rod length and order the correct rod bolts separately—either TP-R74194 for 2.125-inch rods or TP-R80033 for 2.325-inch rods. Since this is a basic kit without bearings, you’ll want to have your crank and rods checked at a machine shop to determine what bearing sizes you need. Plan on a full week for the rebuild if you’re doing it yourself, and don’t forget to break in the engine properly with light loads for the first few hours.
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