Description
When your tractor starts running rough or you’re hearing that telltale valve tap during warm-up, it’s time to look at your valve train. A worn valve system means poor combustion, lost power, and eventually serious engine damage. This TISCO valve overhaul kit gives you everything you need to get your 404 CID engine breathing properly again and running like the workhorse it was meant to be.
What You’re Getting
- Complete intake and exhaust valves that seal tight for proper compression
- Fresh valve springs that maintain the right pressure for reliable operation
- Valve caps and keys included so you don’t need to hunt down small parts
- Everything engineered to handle the demands of a big 6-cylinder diesel
- TISCO quality that meets or exceeds original specifications
Built for Real Farm Work
This kit fits the 404 cubic inch diesel engines found in larger John Deere tractors—the kind of machines you rely on for heavy field work, loader operations, and long days running implements. Whether you’re pulling chisel plows through tough ground or running a big rotary cutter, this engine was built to handle serious loads, and this valve kit keeps it running strong.
Made to Last
TISCO builds these valve components to handle the heat, pressure, and constant cycling that comes with diesel engine operation. The valves are made from quality steel that resists warping and burning, while the springs maintain their tension through thousands of cycles. You’re getting parts that’ll hold up to the demands of farm work.
Good to Know
This is a valve-only overhaul kit, so you’ll want to have your machine shop check valve guides and seats during installation. While you’ve got the head apart, it’s a perfect time to inspect valve guides for wear and make sure everything’s within spec. Your engine will thank you for the attention to detail.
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