Description
When your trusty John Deere starts burning oil, losing power, or hard starting on cold mornings, it’s telling you the 6-404T engine needs attention. After years of long days in the field, those cylinder walls get worn and compression drops off. This complete overhaul kit brings your diesel back to like-new performance without the cost of a new engine.
What You’re Getting
- Complete rebuild package—sleeves, pistons, rings, pins, bearings, gaskets, valves, and springs all in one box
- Keystone top compression rings that seal tight and hold up to diesel combustion pressures
- Standard rod and main bearings plus connecting rod bolts for a complete bottom-end refresh
- Full valve train components including intake and exhaust valves, springs, guides, and retainers
- All gaskets and seals needed to button everything up leak-free
Built for Real Farm Work
This kit fits the 404 cubic inch, 6-cylinder diesel engines found in John Deere 4230 and 4040 series tractors—machines that have handled everything from plowing and planting to hay operations and heavy tillage work. These tractors were built when horsepower meant business, and with this rebuild, you’ll get that original power back.
Made to Last
Tru-Power has been making engine rebuild components for farm tractors for years, and they understand what it takes to hold up under real-world conditions. These aren’t bargain parts—they’re designed to handle the heat, pressure, and continuous operation that farm work demands.
Installation Notes
This is a complete overhaul kit, so plan on pulling the engine or doing major disassembly. You’ll want to check your connecting rod bolt length and order the correct ones separately—either TP-R74194 for 2.125 inch or TP-R80033 for 2.325 inch lengths. Take your time with the assembly and follow torque specs—a good rebuild should give you another 20 years of reliable service.
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