Description
When your John Deere's 404 cubic inch powerplant starts losing compression, burning oil, or showing signs of wear after years of hard work, you don't necessarily need a complete engine rebuild. This basic in-frame overhaul kit lets you tackle the essentials—sleeves, pistons, rings, and gaskets—to get that turbo diesel breathing strong again without pulling the entire engine.
What You're Getting
- Complete cylinder sleeve set with seals for proper bore restoration
- Matched pistons with 3-ring design and keystone top compression rings
- Wrist pins and retainers plus new connecting rod bolts for reliable assembly
- Valve-grind gasket set and oil pan gasket to seal everything up tight
- Quality Tru-Power components designed for your 404 CID turbocharged engine
Built for Real Farm Work
This kit fits the workhorses of many operations—the 7020 Series with their reliable hydraulics and solid frames, plus the popular 4430 and 4630 Series tractors that handle everything from tillage to harvest. These are tractors that often run thousands of hours doing heavy work, and this kit gives them a second life when cylinder wear starts affecting performance.
Made to Last
The keystone top compression rings handle the heat and pressure of turbo operation better than standard rings. The matched piston and sleeve sets ensure proper clearances for good oil control and power. These components are built to handle the demands of a hardworking 404 engine that might see anything from heavy tillage to long days with a grain cart.
Good to Know
This is a basic in-frame kit, so you'll keep your existing crankshaft, rods, and head. Make sure to have the cylinders checked for straightness and the head inspected while you're in there. The connecting rod bolts included should be torqued to specification—don't reuse the old ones. If you're doing the work yourself, a good machine shop can help with cylinder measurements and checking tolerances.