When your driveline starts making noise or your PTO won’t engage smoothly, you might have a worn coupling on your hands. This 13-spline involute coupling connects critical driveline components and keeps power flowing where it needs to go. Whether it’s linking your engine to the transmission or connecting PTO components, this little part plays a big role in keeping your tractor running strong.
What You’re Getting
- Precision involute splines that distribute torque evenly across all 13 contact points
- Compact 3-inch length fits tight spaces in modern tractor designs
- Heat-treated construction resists wear and handles shock loads without stripping
- Exact dimensional specifications ensure proper fit with mating components
- Quality metallurgy that stands up to the vibration and stress of field work
Built for Real Farm Work
This coupling works in various tractor driveline applications where smooth power transfer is critical. You’ll find these connecting PTO shafts, transmission components, and hydraulic pump drives in utility tractors, row-crop machines, and compact equipment. The involute spline design is engineered for agricultural equipment that needs to handle everything from light loader work to heavy tillage operations.
Made to Last
Farm equipment couplings take a beating from constant load changes, temperature swings, and the dirt and moisture that come with outdoor work. This coupling uses quality steel construction and precision machining to maintain proper alignment and smooth operation even after thousands of hours in the field.
Good to Know
Before installing, check the mating splines for wear or damage – worn components will quickly destroy a new coupling. Clean all spline surfaces thoroughly and verify proper alignment to prevent premature failure. The 13 splines need to engage fully for maximum strength, so don’t force anything that doesn’t slide together smoothly.








