Description
The Meritor A39878-1 or A398781 is a genuine OEM service gear set for RDXX160 and RPXX160 drive axles. It carries a 4.10 final drive ratio, with a 10-tooth pinion (pinion part number 39883) and a 41-tooth ring gear. This ring-and-pinion set is the correct replacement for restoring proper drive axle ratio on those axle models. Cross-reference numbers from other suppliers include SD485, ER72460, E9HZ4309T, and 1670235C91, among others listed below. Call us to confirm this gear set matches your axle model and ratio before ordering.
Features
Genuine Meritor OEM service gear set, part number A39878-1 or A398781
4.10 final drive ratio
10-tooth pinion (pinion reference: 39883)
41-tooth ring gear
Fits RDXX160 and RPXX160 axle models
Cross-references: SD485, ER72460, E9HZ4309T, 1670235C91, 81170657, and others
Tech Specs
- Ratio: 4.10
- Pinion Tooth Count: 10
- Gear Tooth Count: 41
- Pinion Part Number: 39883
- Axle Model: RDXX160, RPXX160
Additional Information
Alternate and interchange part numbers for Meritor A39878-1: 1119438, 1670235C91, 81170657, 8235A398781, 9631A398781, A398781410S, A398781RI, ATIA398781, E9HZ4309T, ER72460, ERA398781, HRA398781, SASA398781, SD485, TDAA398781. These are cross-reference numbers only; confirm correct fitment for your specific axle before ordering.Used in these Meritor models
- 160/161/164 Series Drive Axle
- RD-23-160 Drive Axle
- RT-40-160 Drive Axle
- RT-46-160 Drive Axle
- RT-46-164EH Drive Axle
