Thousands of differentials in stock! Ready for immediate shipment. Call us today, receive your item tomorrow. We have a full line of Rockwell differentials available. We also stock replacement parts for all differential models, kits, rebuild kits, and more. Differential and parts available for all Rockwell models. We have been successfully delivering differentials, transmissions, transfer cases, axles, PTOs and more truck parts for over 20 years and offer a one-year unlimited mileage warranty on all rebuilt differentials we sell! Whatever model you need, contact us at 877-776-4600, and we can locate it for you.
Rebuilt Rockwell Differential Models Available:
Single Speed Differential
Two Speed Differential (with or without diff lock)
- RS 15-120 S/A
- RS 23-160 S/A
- RS 13-120 S/A
- RS 17-140 S/A
Front Differential Axle
Rear Axle Differential
For assistance identifying the individual parts for your differential, view or download differential manuals and parts lists visit our manuals page. See images below for assistance in identifying your ring & pinion, click the images for a larger view:
Rockwell Differential Assembly:
- Centruty Class 120
This is just a few Rockwell Differentials and axle housing’s we carry for trucks and equipment of all brands including Kenworth, Peterbilt, Freightliner, Mack, Western Star, International, GMC, Ford and Sterling Trucks. we also stock all Ratio ring and pinion gears.
Rockwell Differentials with or without lube pump: RD20-145, RR20-145 (RS21-145), RD20-145
WITH LOCK RR20-145 (RS21-145), RS15-120, RS21-230, RD23-160, RS23-160, RS23-240
Give us a call we will be happy to assist you.