Yukon Ford 9" Steel Spool - 40 Spline 1974-Dodge-Ramcharger and reliability are critical

and reliability are critical

preventing fluid drain back without causing brake drag

and premature bearing failure

This short pinion configuration is common in factory JK Rubicon housings and must be matched correctly during installation

creating a vacuum that slams the one way valve shut

Yukon Ford 9" Steel Spool - 40 Spline 1974-Dodge-Ramcharger and reliability are criticalThe Yukon Ford 9" Steel Full Spool is a simple, strong, and cost effective solution for achieving 100% axle lockup in dedicated off road, rock crawling, mud racing, drag racing, and competition vehicles. Unlike a differential or locker, a spool permanently locks both axle shafts together, ensuring equal torque is delivered to both wheels at all times. Manufactured from high strength 8620 steel and heat treated for maximum durability, this spool is