RRL20-145 | Meritor Rear Rear Differential | Full Locker | DPX Reman

RRL20-145 | Meritor Rear Rear Differential with Full Driver Controlled Locker — Remanufactured by DPX (40K GAWR) Heavy-duty rear-rear tandem differential with full driver-controlled locker for maximum traction. Remanufactured in Mansfield, Ohio by Discount Parts Exchange - DPX. The Meritor RRL20-145 is the rear position unit that pairs with MDL20-145 / RDL20-145 forward carriers. Rebuilt to your exact ratio with upgraded components. Popular in severe service Cummins-Meritor applications. Call DPX to confirm: 419-522-3320. Highlights Model: RRL20-145 (rear rear with full driver controlled locker) Axle Family: Meritor / Rockwell 20-145 (Cummins-Meritor) GAWR: 40,000 lb Design: Single-reduction; matched ring & pinion; full driver-controlled differential lock Pinion: 2.00" - 39 spline Axle Gears: 2234-G-1437 – 2.100" 41 spline Input Nut: 40X-1237 or KIT2637 Meritor Input Seal: A1-1205-Z-2730 *Requires seal driver 2730T1 for proper installation DPX PRO TIP: We use R945009 seal. Carrier Castings: 3200W1557, 3200W1499 Position: Rear-rear (mates with MDL20-145 / RDL20-145 forward rear) Applications: Dump trucks, heavy haul, construction, logging, and severe service fleets Available Gear Ratios & Gearset Part Numbers RRL20-145 Rear Rear Ratios Ratio Gearset Part Number 2.80 A41490-1 2.93 A41158-1 3.07 A41494-1 3.21 A41496-1 3.42 B41164-1 3.58 B41498-1 3.73 B41500-1 3.91 B41502-1 4.10 B41504-1 4.30 A40066-1 4.33 B41266-1 4.56 B41542-1 4.63 B41268-1 4.88 B41270-1 5.13 A41272-1 5.29 B41274-1 5.57 A41304-1 5.86 B41456-1 6.14 A41458-1 6.43 A41460-1 6.83 A41462-1 7.17 A41464-1 What’s Included Remanufactured Meritor RRL20-145 rear rear carrier assembly with full driver controlled locker, rebuilt to your requested ratio by DPX 12-month, unlimited-mileage parts-only warranty Tech support from DPX during install and initial run-in Fitment Notes Fits tandem-drive trucks equipped with the Meritor / Rockwell 20-145 axle family (Cummins-Meritor applications) Rear-rear position with full locker; pairs with MDL20-145 / RDL20-145 forward rear Verify ratio and spline count before ordering Image Disclaimer Photos are representative; final appearance may vary by ratio and casting revision. Call to Order Call Discount Parts Exchange - DPX for pricing and availability: 419-522-3320 DPX Drivetrain Tools Hub Free tools built by rebuilders for truckers and fleets — Road Speed & Ratio Calculator, PTO shimming procedure, gear ratio comparison charts, and our full IPL library for instant parts identification. Open DPX Drivetrain Tools Hub → DPX — Ohio’s Premier Heavy-Duty Drivetrain Rebuilder | Built to Perform. Trusted to Last.