14 Inch Flywheel Assembly with Ring Gear for International Harvester 1066 1086 1466 1486 1586 Series

Description

When your clutch starts slipping or chattering, or you’re hearing that telltale grinding from the starter, it’s often the flywheel that needs attention. The big 1066 and 1466 workhorses and their siblings in the International Harvester lineup work hard every day, and eventually that flywheel surface gets worn, cracked, or damaged. This complete 14-inch flywheel assembly comes with the ring gear already installed, saving you time and giving you everything needed for a proper repair.

What You’re Getting

• Complete 14-inch diameter flywheel assembly ready to install—no need to transfer your old ring gear
• Precision-machined friction surface that gives your clutch a fresh, true mounting point
• Factory-style ring gear with proper tooth count for reliable starter engagement
• Heavy-duty construction built to handle the torque these big tractors put out
• Direct replacement that bolts right up to your crankshaft—no modifications needed

Built for Real Farm Work

This flywheel fits the powerhouse International Harvester tractors that defined farming in the ’70s and ’80s—models 1066, 1086, 1466, 1486, 1586, plus the 4166, 3688, and 6388. These were the tractors pulling big plows, running heavy discs, and powering through the toughest field conditions. Whether you’re using yours for tillage, harvest, or heavy PTO work, this flywheel is engineered to transfer that engine power smoothly to your transmission.

Made to Last

Farm flywheels take incredible stress from engine vibration, clutch engagement cycles, and the constant heat generated by hard work. This TISCO replacement is manufactured to match the original specifications, with proper balance and heat treatment that stands up to years of operation. The integrated ring gear eliminates the weak point where pressed-on gears can work loose over time.

Installation Notes

You’ll need to split the tractor to access the flywheel, so plan for a full day’s work and proper lifting equipment. Before installation, check your crankshaft bolts for wear and replace if needed—this is your chance to do things right. Torque the flywheel bolts to specification and in the proper sequence to avoid vibration issues down the road.