Description

When your John Deere diesel starts running rough, losing power, or burning oil, worn exhaust valves are often the culprit. These valves open and close thousands of times every minute, taking a beating from extreme heat and combustion pressure. A fresh set of exhaust valves can restore compression, improve fuel economy, and get your engine running like it should.

What You’re Getting

Precision-machined valve with 1.575″ head diameter for optimal flow
44-degree seat angle ensures tight seal against valve seat
0.372″ stem diameter with 1G stem type for reliable operation
Heat-resistant materials handle extreme exhaust temperatures
Direct replacement for John Deere engines—no modifications needed

Built for Real Farm Work

This exhaust valve fits a wide range of John Deere diesel engines from compact 3-cylinder units to larger 6-cylinder powerplants. The 152, 164, and 179 CID 3-cylinder engines power smaller utility tractors, while the 202, 219, 239, and 276 CID 4-cylinder engines run in mid-size row crop and utility models. The larger 329, 359, and 414 CID 6-cylinder engines are found in bigger tractors handling heavy field work and transport duties.

Made to Last

These valves are built to handle the punishment of diesel combustion, with materials chosen specifically for exhaust valve duty. The valve face and seat area resist burning and pitting, while the stem is sized for smooth operation in your engine’s valve guides. Quality construction means these valves will go the distance between overhauls.

Good to Know

Exhaust valve replacement requires removing the cylinder head, so this is typically part of a larger engine rebuild or top-end overhaul. When installing new valves, always check valve guide wear and seat condition—worn guides or damaged seats will shorten valve life significantly. It’s also a good time to replace valve springs and seals for a complete refresh.