ARB Differentials & Axles

ARB differentials on this page are Air Locker locking differentials. Nearly every listing is an Air Locker unit identified by an RD part code, and a few are listed by axle name and spline count.

Air Lockers are matched to the axle, not just to the truck. The housing, the ring gear size, the spline count and the gear ratio range all decide which unit fits. The vehicle list includes the Jeep Wrangler, Nissan Frontier, Nissan Xterra, Nissan Pathfinder, Ford E-350 Econoline, Ford E-350 Super Duty, Dodge Ram 2500 and Dodge Ram 3500. Axle options vary within one model, so the model name alone is not enough.

To choose, identify the axle first: front or rear, make and size, and the number of splines on the axle shafts. Then use the RD code or the title to find the matching unit. Installation usually involves setting up the differential and may call for a compressor and air line kit, which are sold as separate items. Ask a specialist if you are unsure of your axle.

Each product page lists the years, makes and models it fits, and the vehicle selector shows only parts for your vehicle. For other brands, see the full Differentials & Axles range. Priced in Canadian dollars and ships across Canada.