Meritor is the world’s largest independent manufacturer of heavy-duty truck axles for a vast range of vehicle applications, including linehaul, off-highway, specialty and defense. Meritor’s axle lineup includes front-drive and non-drive axles as well as single, tandem and tridem rear-axles.

We stock complete Meritor drive axle assemblies, rebuilt carriers and axle shafts for the RS single-axle and RT tandem families (RT-40-145, RT-46-160, RT-52-160 and more) – new, used and rebuilt, from warehouses nationwide with same-day shipping, domestic and international. We also stock most output (thru) shaft assembly replacement parts for Meritor drive axle models. Order rebuilt Meritor differential carriers and Meritor axle shafts and axle parts online, or call 877-776-4600 to speak with our Meritor experts and we ship today.

ProGear & Transmission Meritor Axle Assemblies available to ship!

Meritor Rear Drive Axle Model Numbers Old Style

Meritor Rear Drive Axle Model Numbers New Style

How to identify your Meritor axle

Every Meritor drive axle carries a model number on its identification tag, and the two charts above show how to read it in the old and the new style. The number is built as type–capacity–series: the letter prefix is the axle type (RS a single-reduction single axle, RT a tandem set, RD or RP the forward carrier of a tandem, RR the rear carrier), the middle number is the rated capacity in thousands of pounds (40 = 40,000 lb), and the last group is the carrier series (145, 160, 180). If the tag is missing, the casting number on the main differential case identifies the carrier. Have the model number and casting number ready when you call and we will match the right assembly, carrier or axle shaft.

Popular Meritor carriers and axle shafts we rebuild

• Meritor RT-40-145 / RD-20-145 axle shaft, carrier A1-3200-B-1978
• RT-40-145 / RR-20-145 tandem rear carrier B1-3200-D-1850
• RT-46160 / RP-26160 tandem front carrier A1-3200-K-2117
• RT-52160 / RD-23160 tandem front carrier A6-3200-Q-1837
• RS-23160 single axle carrier A-3200-E-2137
• All rebuilt Meritor differentials