Description
When your vintage Allis starts to lose power or you hear that telltale ticking sound from the engine, worn exhaust valves are often the culprit. These valves take a beating—constantly opening and closing thousands of times while dealing with red-hot exhaust gases. When they start to wear or lose their seal, you’ll notice it in performance and fuel economy real quick.
Key Features
- Direct replacement for the original exhaust valves in your 125, 138, and 149 cubic inch 4-cylinder gas engines
- Heat-treated construction that stands up to the extreme temperatures and constant cycling
- Precision-machined valve face creates the tight seal you need for proper compression
- Quality aftermarket part that won’t break the bank during a rebuild
Built for Real Farm Work
These valves fit the D10 Series, D12 Series, D14 Series, and D15 Series Allis Chalmers tractors—machines that were the backbone of many farms in their day. Whether you’re restoring a classic D14 or keeping your dependable D15 running for hay season, these are the same specs as what came from the factory.
Made to Last
Engine valves live in a tough environment, and these are built to handle it. The valve head material resists heat damage and carbon buildup, while the stem is machined to precise tolerances for smooth operation in the valve guide. Quality construction means fewer headaches down the road.
Installation Notes
This is a four-valve-per-cylinder engine, so you’ll want to order a full set if you’re doing a rebuild. While you’ve got the head off, it’s a perfect time to check your valve guides and seats—sometimes a good valve job is all these old engines need to run like new again.
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