Meritor A39958-1 or A399581 is a genuine Meritor differential service gear set with a 4.88 ratio, a gear tooth count of 39 and a pinion tooth count of 8. It is specified for axle model RS23240, and our parts manual carries it in the Meritor 210/220/230/240 2-Speed Axle as the drive gear, pinion and nut assembly, item 14, one per assembly. The pinion is identified as 39725. Check the ratio and tooth counts against your axle before ordering, and call us if you want help confirming fit.
Features
4.88 ratio
Gear tooth count 39, pinion tooth count 8
Axle model RS23240, pinion 39725
Listed in the Meritor 210/220/230/240 2-Speed Axle, item 14, one per assembly
Genuine Meritor differential service gear set
Tech Specs
- Ratio:4.88
- Gear Tooth Count:39
- Pinion Tooth Count:8
- Pinion:39725
- Axle Model:RS23240
Used in this Meritor model
