Description
The Meritor A39900-5 or A399005 is a genuine OEM service gear set engineered for RRXX160 and RSXX160 drive axles. This ring-and-pinion set carries a 3.21 ratio, built from a 14-tooth pinion (Meritor pinion reference 41269) mating with a 45-tooth ring gear. That 3.21 ratio is a common highway-biased final drive selection, and getting the tooth counts right is critical to correct mesh pattern and differential longevity. Call us to confirm proper fit for your specific axle configuration before ordering.Interchanges:
- 1681808C91
- 3130813
- 8235A399005
- 9631A399005
- A399005RI
- ATIA399005
- F1HZ4209F
- HRA399005
- S20159
- TDAA399005
