A39888-5 Meritor Differential Service Gear Set

The Meritor A39888-5 or A398885 is a genuine Meritor differential service gear set engineered for RRXX160 and RSXX160 series drive axles. It carries a 4.30:1 gear ratio, with a 43-tooth ring gear paired to a 10-tooth pinion (Meritor pinion reference 41281). This ratio is common in vocational and line-haul applications where pulling power takes priority over top-end road speed. Because it is a service gear set, it is the correct replacement component when restoring the differential carrier to factory gear geometry. Call us to confirm proper fit for your axle configuration.

Features

4.30:1 gear ratio for RRXX160 and RSXX160 axle models
43-tooth ring gear paired with 10-tooth pinion
Meritor pinion reference number 41281
Genuine Meritor OEM differential service gear set

Tech Specs

• Ratio: 4.30
• Gear Tooth Count: 43
• Pinion Tooth Count: 10
• Axle Model: RRXX160, RSXX160
• Pinion: 41281