When your International Harvester tractor starts running rough, losing power under load, or developing that telltale exhaust knock, worn valves are often the culprit. These exhaust valves handle the demanding job of sealing combustion chambers on 6-cylinder engines while dealing with extreme heat and pressure cycles day after day. This TISCO replacement gets your engine breathing properly again, restoring that smooth power delivery you depend on.
What You’re Getting
- Direct replacement for factory specifications – no modifications needed
- Heat-treated construction that handles the punishment of diesel combustion
- Built for 6-cylinder turbocharged engines commonly found in larger IH tractors
- Quality materials that maintain proper seal under high compression and temperature
- Six valves included – the complete set your engine needs for a thorough valve job
Built for Real Farm Work
This valve fits the workhorses of many farm operations including 1460, 1466, 1480, 1486, 1566, 1586, 3388, 4166, 4186, 5088, and 6388 series tractors. These are the machines pulling your biggest implements, handling heavy tillage work, and running your combines during harvest season. Whether you’re deep-ripping fields, pulling wide cultivators, or powering through tough harvesting conditions, these engines need valves that can handle serious workloads.
Made to Last
Farm engines work harder than most folks realize, and exhaust valves take the worst of it. These TISCO valves are built with quality steel that resists burning and warping, even under the extreme temperatures of turbocharged diesel operation. The precision machining ensures proper fit in your valve guides, while the hardened surfaces stand up to thousands of combustion cycles.
Good to Know
Valve replacement is a job for someone comfortable with engine work, but if you’re tackling it yourself, you’ll also need valve springs, guides, and valve keys for a complete rebuild. Take your time with valve lash adjustment – proper clearances are critical for performance and longevity. A valve job is also a good time to check your valve guides and seats for wear.
