122045 Gearset | Dana Spicer Eaton RT461, 4.11/5.61 Ratio – New (NOS) Genuine

122045 Dana Spicer Gear Set — 4.11 Ratio | 23080P / RT461 / RT521 Axles | New Genuine OEM

122045 is a new, genuine Dana / Eaton spiral-bevel ring & pinion gear set for second-series heavy-duty axles. Provides a 4.11 ratio (37/9) with noted interchange usage in select 5.61 setups. Compatible with a wide range of Eaton and Dana Spicer axles, including 23080P, 23080T, RT461, RT521, RT601, RT651, RT652, and 26085T/P*. Built to OEM standards, this 18" spiral gear set is ideal for repairs or ratio changes in fleet and commercial applications.

Specs & Features

• Part Number: 122045
• Manufacturer: Dana / Eaton
• Condition: New Genuine OEM
• Ratio: 4.11 (select interchange with 5.61)
• Tooth Count: 37 ring / 9 pinion
• Ring Gear: 53167 (18" spiral)
• Pinion: 126121 (fine spline; nut not included)
• Supersedes: 98108 (Dana / Eaton)

Compatible Axle Models

• 23080P, 23080T, 26085T/P*
• RT461, RP461, RT521, RT601, RT651, RT652

What’s Included

• (1) Ring Gear — 53167
• (1) Pinion — 126121 (hardware and pinion nut not included)

Fitment Notes

• Confirm spline count, axle model, and ratio requirements before installation
• For second-series Eaton / Dana Spicer heavy-duty axles; verify any 5.61 interchange locally

Image Disclaimer

Photos may show the actual item or a representative example. Minor scuffs or shelf wear may be present from storage.

Warranty Policy

Sold as-is; no warranty or returns. Please verify fitment before purchasing.

Location

Mansfield, Ohio

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