Description

When you start hearing that telltale tapping noise from the engine or notice reduced power on hills, it might be time to check those exhaust valves. A worn exhaust valve on your International Harvester’s 4-cylinder gas engine can’t seal properly, causing compression loss and poor performance when you need that tractor to perform. These replacement valves restore proper sealing so your engine runs smooth and strong again.

What You’re Getting

Precise fit valve designed for International Harvester’s 123 CID 4-cylinder gas engines
Factory-spec 4-57/64 inch valve length ensures proper timing and operation
Quality construction that handles the heat and stress of exhaust gas flow
Direct replacement for worn factory valves – no modifications needed

Built for Real Farm Work

These valves fit International Harvester 100 series, 200 Series, Super A-1 Series (prior to S/N 310300), Super AV-1 Series (prior to S/N 310300), and Super C Series tractors. Whether you’re cultivating, planting, or running a brush hog, these are the same utility tractors that built farms across America and are still working today.

Made to Last

Exhaust valves take a beating from hot gases and constant opening and closing. This TISCO replacement is built to handle the demands of farm work, with quality materials that resist warping and wear. You’ll get the reliability you need to keep your tractor running through the busy season.

Good to Know

Remember that most engines use 4 exhaust valves total, so order accordingly for a complete valve job. While you’ve got the head apart, it’s a good time to check valve guides and springs too. A valve grinding and proper seat cutting will help these new valves seal like they should.