Axle & Differential Parts Willys M38A1

Why the Front and Rear Axles in the Willys M38A1 Deserve Special Attention.

The Willys M38A1 runs a Dana 25 up front and the heavy-duty Dana 44 in the rear – two axles that have earned their reputation for rugged military engineering over decades. Even so, this proven combination of steering knuckles, wheel bearings, axle shafts, and differentials isn't immune to time: seals and gaskets harden and start leaking, wheel bearings lose their precision fit from moisture, U-joints on the propeller shaft develop play, and steering knuckle pins along with locking hubs suffer from corrosion and mechanical stress during off-road use. The ring and pinion in the differential show tooth-flank wear after many years of service, while differential cover gaskets are a frequent cause of slow oil seepage. Anyone running their M38A1 off-road should inspect both axles regularly for wear and leaks to protect the entire drivetrain.

• Dana 25 Front Axle: Axle shafts, wheel hubs, wheel bearing kits, steering knuckle housings and seals, plus locking hub sets for the complete Dana 25 front axle.
• Dana 44 Rear Axle: U-joints, propeller shaft slip yokes, ring & pinion sets, and differential cover gaskets for the complete Dana 44 rear axle.

American Axle Expertise for Front and Rear.

Wheel bearings, steering knuckle seals, and differential cover gaskets from Crown Automotive cover both axles reliably – American engineering, made in the USA. U-joints, pinion bearing kits, and propeller shaft nuts come from axle specialist Dana Spicer, while wheel hubs and steering knuckle housings are supplied by Omix.

Your Partner for the Front and Rear Axle in the M38A1.

Whether you need an axle shaft, a U-joint, or a full differential overhaul, we're happy to advise you on steering knuckle adjustment, checking the gear pattern after replacing the ring and pinion, and compatibility questions between the Dana 25 and Dana 27. Your order ships from our warehouse as fast as possible.