Axles, Differentials & Drivetrain Parts for Jeep CJ3B

Why Choosing the Correct Axle Matters for the Willys CJ3B.

The Willys CJ3B was fitted with different front axles between 1953 and 1964, while the rear axle stayed nearly unchanged throughout production. Early models ran the open Dana 25 front axle, while later model years received the sturdier, closed-knuckle Dana 27 – a difference that matters a great deal when sourcing parts, since axle shafts, ring-and-pinion sets, and ball joints aren't interchangeable between the two axle types. The Dana 44 rear axle, by contrast, remained in use throughout the entire production run and reliably transfers power to both rear wheels. Anyone restoring or maintaining their CJ3B should identify the axle fitted to their vehicle by axle tag or design before ordering parts, to ensure a proper fit.

For the early, open-knuckle CJ3B model years, the Dana 25 Front Axle category offers axle shafts, pinion bearings, and seal kits. If your vehicle was later fitted with the sturdier, closed-knuckle front axle, you'll find the matching parts in the Dana 27 Front Axle category – from U-joints to wheel bearings. For the rear axle, which stayed the same across all CJ3B model years, the Dana 44 Rear Axle category has ring-and-pinion sets, U-joints, slip yokes, and gaskets. If you're unsure which front axle is fitted, we're happy to help identify it from photos or the axle tag.

Trusted American Brand Quality Across All Three Axle Types.

Parts for all three axle types come mainly from Dana Spicer, the name behind the axle design itself, along with Crown Automotive and Omix – three American manufacturers with decades of experience in Jeep and Willys parts.

Your Partner for Axle Selection on the Willys CJ3B.

Whether you're not yet sure which axle is fitted to your CJ3B or already know exactly which parts you need, we're happy to help with identification, gear ratio questions, and choosing the right components for your axle. Your order ships from our warehouse as fast as possible.