SKU:GEARING DANA
122351 | Eaton Dana Gear Set | 15040S R-4.63 | 37/8 Tooth | Used
122351 | Eaton Dana Gear Set | 15040S R-4.63 | 37/8 Tooth | Used
Share
Hurry, only 1 left in stock
Couldn't load pickup availability
122351-U Eaton Dana Gearset — 15040S Axle | 4.63 Ratio (37–8) | Used Genuine
Product Summary
122351-U is a used genuine Eaton/Dana spiral-bevel ring & pinion set for the 15040S axle. Provides a 4.63 ratio with a 37/8 tooth count. OEM ring gear 210366 and matching pinion 210330, removed from a functioning axle, inspected, and ready for service in compatible heavy-duty drivetrain applications.
Specs & Features
| Part Number | 122351-U |
| Manufacturer | Eaton / Dana |
| Axle Model | 15040S |
| Ring Gear | 210366 |
| Pinion | 210330 |
| Tooth Count | 37 ring / 8 pinion |
| Ratio | 4.63 |
| Condition | Used Genuine (removed from operational axle) |
Compatible Axle Model
- Eaton / Dana 15040S
What’s Included
- (1) Ring Gear — 210366
- (1) Pinion — 210330
- Note: Hardware and pinion nut are not included.
Fitment Notes
- Removed from a functioning axle; inspected and ready for reuse.
- Confirm axle model, bearing setup, and spline compatibility before installation.
Image Disclaimer
Photos may show the actual set or a representative example. Normal surface wear consistent with used condition may be present.
Warranty Policy
This used gearset is sold as-is with no warranty expressed or implied.
Location
Ships from our warehouse in Mansfield, Ohio.
Heavy-Duty Solutions — Built to Perform. Trusted to Last.
We accept

THE REMAN CENTER. INC. dba Discount Parts Exchange
🔧 Why Choose Discount Parts Exchange?
A trusted drivetrain partner since 1997
✅ Quality Gearing
We source only high-quality OEM and aftermarket parts—dependable and built to perform.
⚡ Great Service
We understand costly downtime. Our team responds fast to get you the parts you need, when you need them.
💲 Competitive Pricing
Premium parts and expert support—without the premium price tag.
📦 Expanding Inventory
Our inventory changes daily. Don’t see what you’re looking for?
Call or email us—chances are, we have it.
24,000 SQ FT OF HEAVY-DUTY SOLUTIONS