4WD Drive Shaft Coupling for Ford New Holland 40 Series and TS Series Tractors

Description

When your 4WD starts slipping or making grinding noises up front, it’s often a worn drive shaft coupling that’s the problem. Nothing’s more frustrating than getting stuck in a muddy field when you need that front-wheel power most. This 15-spline coupling connects critical driveline components, keeping power flowing smoothly from your transmission to the front axle so you can count on reliable 4WD engagement.

What You’re Getting

• 15 splines precision-cut to handle high torque loads without slipping or wearing prematurely
• Heavy-duty construction that stands up to the shock loads of field work and steep grades
• Direct replacement design—no modifications needed, just swap out the old one
• Quality metallurgy that resists the stripping that leaves you stuck without front drive
• Exact dimensional specifications for proper fit with your existing drive components

Built for Real Farm Work

Your Ford New Holland 40 series and TS series tractors are workhorses built for serious farming—from pulling heavy implements through tough clay to climbing steep fields with loaded grain carts. Whether you’re running a 5640 utility tractor or an 8340 row-crop machine, this coupling handles the torque demands of real agricultural work where traction makes the difference between getting the job done and calling it quits.

Made to Last

This coupling uses the same heat-treated steel construction as the original equipment, giving you the hardness to resist wear while maintaining the toughness to handle shock loads without cracking. The 15 splines distribute torque loads across multiple contact points for maximum strength, and the precision machining ensures full engagement without the play that causes rapid failure.

Installation Notes

Installation requires accessing the 4WD driveline, so budget a couple hours if you’re doing it yourself. Support those drive shafts properly—they’re heavier than they look. While you’ve got it apart, inspect the mating splines for wear and clean everything thoroughly before assembly. Partial spline engagement will destroy a new coupling quickly, so make sure everything meshes fully and smoothly.