Collection: All Gearing – Discount Parts Exchange Since 1997
Heavy-Duty Differential & Transmission Gearing
Shop our complete selection of heavy-duty gear sets for Class 6, 7, and 8 trucks. We stock differential ring & pinion sets, axle gearing kits, and transmission gears from leading OEMs like Dana Spicer, Eaton, Meritor, and Rockwell. Whether you need to rebuild, re-gear, or upgrade for torque, economy, or hauling power, these genuine and aftermarket gear sets are built to perform under the toughest conditions.
Gearing Options
- Differential Gearing: OEM ring & pinion sets, matched gear pairs, spider and side gears for popular models including Dana S135, S150, DS/RS404, and Meritor 145/160 series.
- Transmission Gears: Mainshaft, countershaft, splitter, and auxiliary gears for Eaton Fuller transmissions and more.
- Condition Choices: New Old Stock (NOS), verified take-out assemblies, and premium aftermarket gearing.
Why Choose Our Gear Sets
- Application-specific expertise: Ratio recommendations for engine, tire size, and duty cycle.
- Quality assurance: Each gear inspected for wear, tooth pattern, and OEM compatibility.
- Fast shipping: U.S. warehouse in Mansfield, Ohio — international shipping available.
Fitment Help
Not sure which gearset fits your axle or transmission? Provide us your axle tag, BOM, or transmission model number — we’ll confirm the correct ratio and part number before shipping. Call 419-522-3320 for expert support.
Heavy-Duty Solutions — Built to Keep Your Drivetrain Moving.
Built to Perform. Trusted to Last.
-
-
-
Vendor:Eaton / Dana Heavy Axle212901 Gearset | Dana Spicer Eaton DS402, 3.08 Ratio – Used Genuine
212901 Eaton Dana Gearset — DS402 Forward Rear | 3.08 Ratio (37/12) | Ring 128023 + Pinion 128024...Regular price $1,174.47 USDSale price $1,174.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle212890 | Eaton / Dana Gear Set DS461-R | 6.50 | DS/DD461 | New Take-Off | Genuine
212890 Eaton Dana Gearset | DS461-R DD461 | 6.50 Ratio | 128028 128029 | New Take-Off Genuine Product...Regular price $1,547.74 USDSale price $1,547.74 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle208523R5 Flange Half | International RA474, RA57, Dana-Spicer W230 | 3.73–4.44 Ratio | Used OEM
208523R5 Differential Flange Half — International RA474 / RA57 | Dana-Spicer W230 | Used OEM 208523R5 is a...Regular price $124.74 USDSale price $124.74 USD Regular priceUnit price per -
Vendor:truckparts4u.com14367 Eaton Fuller A3071 Auxiliary Mainshaft Bearing Set | NTN & Timken Cross | New OEM
14367 Eaton Fuller Auxiliary Mainshaft Bearing Set – New OEM Genuine – Cross Ref A3071 (NTN/Timken) The 14367...Regular price $124.74 USDSale price $124.74 USD Regular priceUnit price per -
Vendor:truckparts4u.com143-240-3311 | Sisu Axle FRMP-13/16-S | 4.68 Ratio | New Genuine Marmon-Herrington
143-240-3311 — Sisu FRMP-13/16-S Ring & Pinion Gear Set (4.68 Ratio) | New Genuine Marmon-Herrington The 143-240-3311 gear...Regular price $3,274.47 USDSale price $3,274.47 USD Regular priceUnit price per$4,874.47 USDSale -
Vendor:Eaton / Dana Heavy Axle129969 | Dana Spicer Power Divider Cover | DS461 DS462 DS463 | Non-Pump | New Genuine
129969 Dana Spicer Power Divider Cover — DS461 Axles | Non-Pump Style | New Genuine Product Summary Genuine...Regular price $347.74 USDSale price $347.74 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle123269 Gearset | Dana Eaton RC461, 3.70 Ratio – New Take-Off Genuine
123269 Dana Eaton Gearset — RC461 / RC521 / RC581 | 3.70 Ratio (37–10) | Ring 52995 +...Regular price $1,747.74 USDSale price $1,747.74 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle122351 | Eaton Dana Gear Set | 15040S R-4.63 | 37/8 Tooth | Used
122351-U Eaton Dana Gearset — 15040S Axle | 4.63 Ratio (37–8) | Used Genuine Product Summary 122351-U is...Regular price $1,247.74 USDSale price $1,247.74 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle122146 Gearset | Dana Eaton 21065T, 2SPD, 4.63/6.31 Ratio – New (NOS) Genuine
122146 Dana Eaton Gear Set — 4.63 Ratio | 19055T / 21065T / 22065T Axles | New Take-Off...Regular price $1,974.47 USDSale price $1,974.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle122045 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...Regular price $1,974.47 USDSale price $1,974.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle121748 | Eaton Dana-Spicer 19050T Nest Kit w/ 126000 36 Spline A-Gears | New OEM
121748 Dana Spicer Axle Nest Kit — 19050-T / 19050-P | Differential Gear Set | New Genuine OEM...Regular price $247.74 USDSale price $247.74 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle119352 Gearset | Dana Eaton DS480P, 5.43 Ratio – Used Genuine Eaton
119352 Dana Eaton Gear Set — 5.43 Ratio | DS480P Axle | Used 119352 is a used Dana...Regular price $1,174.47 USDSale price $1,174.47 USD Regular priceUnit price per
Your #1 Source for Remanufactured Transmissions, Differentials, Transfer Cases & PTOs — Since 1997
Trusted by Fleets & Technicians for Over 25 Years
Discount Parts Exchange delivers quality, reliability, and value in every drivetrain component. Backed by decades of hands-on experience, our heavy-duty solutions are built to keep your truck running.