AMC 20 Rear Axle Parts for Jeep CJ7
Axle Shafts, Ring & Pinion and Differential Components for Powerful Drive (1976–1986).
Why the AMC 20 Rear Axle in the Jeep CJ7 Needs Attention Over Time.
The AMC 20 rear axle is the robust factory rear axle fitted to every Jeep CJ7 and constantly absorbs full driving torque, braking loads and, off-road, considerable twisting forces. Axle shafts fatigue from continuous torque loading and can break under overload, while seals at both the inner and outer ends harden and let axle oil escape, attacking wheel bearings and brakes. The ring and pinion wear down through constant gear mesh and develop backlash, whine and heat buildup if the oil level is low or the shims are set incorrectly. The differential carrier itself and the Trac-Lok clutch plates wear from frequent traction changes off-road, while the pinion yoke and U-joints suffer from the drive shaft's vibration loads. Anyone driving their CJ7 off-road, running larger tires, or carrying heavy loads regularly should check the rear axle for play, leaks and unusual running noise.
- Axle Shafts & Seals: The rear axle shaft right for narrow track axles and the matching inner seal keep the axle sealed and wear-resistant.
- Wheel Hubs, Bearings & Studs: The axle hub and wheel bearing kit ensures smooth running, complemented by matching wheel studs for secure wheel mounting.
- Ring & Pinion in Multiple Ratios: From the 3.54 ring and pinion set to the 4.10 set for tire or terrain adaptation – further ratios are available in the product list.
- Differential Carrier, Trac-Lok & Rebuild Kits: The Trac-Lock differential carrier along with the complete bearing master kit for a full differential rebuild.
- Pinion Yoke, U-Joint & Pinion Seals: The pinion yoke and pinion oil seal keep power flowing cleanly from the drive shaft to the axle.
- Differential Cover, Gaskets & Shims: The differential cover gasket and the differential shim set for precise differential setup.
American Axle Engineering from Proven Manufacturers.
Axle shafts, wheel hubs, ring & pinion sets and Trac-Lok differential components for the AMC 20 rear axle come mostly from Crown Automotive – a hallmark of American engineering – complemented by pinion yokes, pinion seals and differential bearing kits from Dana Spicer. Wheel studs are supplied by Dorman, and one 4.88-ratio ring and pinion set comes from Omix – both likewise standing for American-made quality.
Your Partner for the AMC 20 Rear Axle in the CJ7.
Whether you need a single wear part or a complete differential rebuild, we're happy to advise on gear ratio selection, shim sizing and the correct installation order, including compatibility questions for narrow or wide track axles and Trac-Lok equipment. Most items ship from stock within 1-2 business days.