Collection: All Gearing | Dana Spicer, Meritor, Rockwell, Eaton | NOS & OEM Heavy-Duty Gears
All Gearing – Heavy-Duty Differential & Transmission Gears
Shop a massive selection of heavy-duty ring & pinion gearsets, axle gears, side gears, spider gears, and transmission gears. We stock New Genuine, New Old Stock (NOS), and quality take-out gearing from Dana Spicer, Meritor, Rockwell, AxleTech, Eaton Fuller, and more.
Whether you need to rebuild a differential, change gear ratio for better pulling power or fuel economy, or replace worn transmission gears, Discount Parts Exchange has the right gearing in stock and ready to ship from Mansfield, Ohio.
Why Shop DPX Gearing?
- Hard-to-Find NOS & Genuine OEM Parts — Many no longer available from dealers
- Popular Applications — Dana S135, S150, DS/RS series, Meritor 140/145/160 series, Eaton Fuller transmissions, and more
- Expert Support — Not sure what ratio or part you need? Send us your axle tag or BOM number — we’ll help you get the right gearset fast
Call our drivetrain specialists at 419-522-3320 for compatibility help and availability.
DPX Drivetrain Tools Hub
Free tools built by rebuilders for truckers and fleets — Road Speed & Ratio Calculator, gear ratio comparison charts, and full IPL library.
Open DPX Drivetrain Tools Hub →
Heavy-Duty Solutions — Built to Perform. Trusted to Last. Discount Parts Exchange (DPX) — Since 1997.
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Vendor:SISU143-240-3311 | 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 is...Regular price $3,574.47 USDSale price $3,574.47 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 | Eaton / Dana Spicer Power Divider Cover | DS461 / DS462 / DS463 | Non-Pump |...Regular price $347.74 USDSale price $347.74 USD Regular priceUnit price per$1,102.65 USDSale -
Vendor:Eaton / Dana Heavy Axle123269 Gearset | Eaton | Dana Spicer | RC461, 3.70 Ratio | New Take-Off Genuine
123269 | Eaton / Dana Spicer 3.70 Gearset | RC461 / RC521 / RC581 | New Take-Off Genuine...Regular price $1,524.74 USDSale price $1,524.74 USD Regular priceUnit price per$2,177.74 USDSale -
Vendor:Eaton / Dana Heavy Axle122351 | Eaton Dana Gear Set | 15040S R-4.63 | 37/8 Tooth | Used
122351 | Eaton / Dana Spicer Gear Set | 15040S R-4.63 | 37/8 Tooth | Used Genuine Used...Regular price $974.44 USDSale price $974.44 USD Regular priceUnit price per$1,247.74 USDSale -
Vendor:Eaton / Dana Heavy Axle122146 Gearset | Dana Eaton 21065T, 2SPD, 4.63/6.31 Ratio – New (NOS) Genuine
122146 | Eaton / Dana Spicer Gearset | 21065T / 2-Speed | 4.63 / 6.31 Ratio | New...Regular price $1,974.47 USDSale price $1,974.47 USD Regular priceUnit price per$2,982.91 USDSale -
Vendor:Eaton / Dana Heavy Axle122045 Gearset | Dana Spicer Eaton RT461, 4.11/5.61 Ratio – New (NOS) Genuine
122045 | Eaton / Dana Spicer Gearset | RT461 / RC521 / RC581 / 23080T / 23080P /...Regular price $1,547.44 USDSale price $1,547.44 USD Regular priceUnit price per$1,974.47 USDSale -
Vendor:Eaton / Dana Heavy Axle121748 | Eaton Dana-Spicer 19050T Nest Kit w/ 126000 36 Spline A-Gears | New OEM
121748 | Eaton / Dana Spicer 19050T/P Axle Nest Kit | 36 Spline | New Genuine (NOS) New...Regular price $247.74 USDSale price $247.74 USD Regular priceUnit price per$538.87 USDSale -
Vendor:Eaton / Dana Heavy Axle119352 Gearset | Dana Eaton DS480P, 5.43 Ratio – Used Genuine Eaton
119352 | Eaton / Dana Spicer Gearset | DS480P | 5.43 Ratio | Used Genuine Used genuine Eaton...Regular price $1,174.47 USDSale price $1,174.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle113595 | Eaton Dana-Spicer Sun Gear for 26321 / 35327 | New Genuine
113595 | Eaton / Dana Spicer Sun Gear (2-Speed) | DT480P / 23221 / 23321 / 26321 /...Regular price $267.47 USDSale price $267.47 USD Regular priceUnit price per$335.46 USDSale -
Vendor:Eaton / Dana Heavy Axle111351 Gearset | Dana Spicer | Eaton RS480, 3.55 Ratio | New (NOS) Genuine Eaton
111351 | Eaton / Dana Spicer Gearset | RS480 / 44RS / 23120-1 | 3.55 Ratio | New...Regular price $1,574.47 USDSale price $1,574.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle110807, 110808 | Eaton | Dana Spicer DS402-P Input Retainer | New (NOS) Genuine
110807, 110808 | Eaton / Dana Spicer DS402-P Input Retainer | New Genuine (NOS) New genuine Eaton /...Regular price $74.74 USDSale price $74.74 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle110150, 0110150 | Eaton Dana Spicer Momentary Switch Assembly | New (NOS) Genuine
110150, 0110150 | Eaton / Dana-Spicer Momentary Switch Assembly | New Genuine (NOS) New genuine Eaton / Dana-Spicer...Regular price $97.47 USDSale price $97.47 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.