The 219001 Eaton gear kit pin and nut is a ring and pinion set for Eaton DT/DP341, 381, 401, 402, 403 and 451 drive axles. It pairs ring gear 85390 with pinion 129201 in a 37-tooth by 9-tooth combination, listed at a 4.11 ratio with a 5.61 ratio also referenced on the gear data. The ring gear measures 16.5 in. and uses a spiral bevel tooth form for quiet, high-contact power transfer under load. The pinion nut is not part of this kit, so plan on sourcing that separately during your differential rebuild. Call us to confirm the ratio matches your axle tag.
Tech Specs
- Axle Model DT/DP341, 381, 401, 402, 403, 451
- Gear Ratio 4.11 / 5.61
- Invoice KIT-GEAR PIN & NUT (218501)
- Ring Teeth Count 37
- Pinion Teeth Count 9
- Ring Gear Size 16.5
- Ring Gear Type Spiral Beval
- Ring Gear Number 85390
- Pinion Number 129201
- Pinion Nut Included N
