Description
When your tractor starts running rough or losing power, the intake valves are often the culprit. These hardworking parts open and close thousands of times per hour, letting fresh air into your cylinders for clean combustion. After years of heat, carbon buildup, and constant cycling, they can warp, wear, or lose their seal—leading to poor performance and wasted fuel.
What You’re Getting
- Precision-machined valve that meets original equipment specifications
- Heat-treated construction handles the thermal stress of diesel operation
- Proper valve geometry ensures optimal airflow for complete combustion
- Direct replacement—no modifications needed for installation
Built for Real Farm Work
This intake valve fits a range of John Deere tractors including the 40 series (2040, 2140, 3040, 3140, 3640, 4040) and 50 series (2250, 2450, 2650, 2850, 3050, 3350, 4050) models. Whether you’re running your 2650 for general farm work, using your 3040 for field operations, or operating a 2450 for daily chores, this valve keeps your engine running cleanly and efficiently under varying loads like pulling implements or running PTO equipment.
Made to Last
These valves are designed for John Deere’s 4239T and 6359T diesel engines found in 300 Series applications. The valve face and seat are precision-ground to create a perfect seal that prevents compression loss and maintains proper cylinder pressure for years of reliable service.
Good to Know
Valve replacement requires removing the cylinder head, so it’s a good time to check valve guides and seats for wear. Consider replacing exhaust valves at the same time since they’ve seen the same service hours. Always use proper valve spring compressor tools and follow torque specifications when reassembling the head.
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