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:Spicer Transmission40-35-16-1X Dana Spicer | TTC | Tremec | Input Shaft | ES42-5 | New Genuine
40-35-16-1X | Dana Spicer TTC Input Shaft — CM4054 Series — New Genuine The 40-35-16-1X Dana Spicer TTC...Regular price $295.00 USDSale price $295.00 USD Regular priceUnit price per -
Vendor:Meritor3892Z1768 Spur Gear | Meritor-Rockwell-AxleTech | Genuine (NOS)
3892Z1768 | Meritor-Rockwell-AxleTech Spur Gear | New Genuine (NOS) New genuine Meritor / Rockwell / AxleTech spur gear...Regular price $947.47 USDSale price $947.47 USD Regular priceUnit price per$1,567.23 USDSold out Sale -
Vendor:Meritor3892M4849 Planetary Pinion | Meritor-Rockwell-AxleTech | Genuine (NOS)
3892M4849 | Meritor Rockwell AxleTech 2-Speed Planetary Pinion Gear | Old Style Non-Needle | New Genuine (NOS) New...Regular price $247.74 USDSale price $247.74 USD Regular priceUnit price per$367.47 USDSale -
Vendor:Meritor3880F708 Meritor Rockwell Thru Shaft | Genuine OEM
3880F708 | Meritor Rockwell AxleTech Thru Shaft | Heavy-Duty | New Genuine OEM (NOS) New genuine Meritor /...Regular price $274.47 USDSale price $274.47 USD Regular priceUnit price perSold out -
Vendor:GM3869006 | GM H150 H170 Differential Gear Set | 5.83 Ratio | New Aftermarket
3869006 | GM H150 / H170 Differential Gear Set | 5.83 Ratio | New Aftermarket (NOS) New aftermarket...Regular price $524.74 USDSale price $524.74 USD Regular priceUnit price per$574.47 USDSale -
Vendor:GM3785597 | GM H052 / HO52 Gear Set – 4.57 Ratio (1949–1972 Trucks, NOS)
3785597 | GM H052 / HO52 Gear Set | 4.57 Ratio | New Genuine (NOS) New Genuine 3785597...Regular price $494.74 USDSale price $494.74 USD Regular priceUnit price per$544.74 USDSold out Sale -
Vendor:Eaton / Dana Heavy Axle360KG107-X Gearset | Dana Spicer | S135 S150 G360CA | 4.44 Ratio | New Genuine
360KG107X | Dana Spicer Gearset | S135 / S150 / G360CA | 4.44 Ratio | New Genuine New...Regular price $1,074.74 USDSale price $1,074.74 USD Regular priceUnit price per$1,347.74 USDSale -
Vendor:Eaton / Dana Heavy Axle360KG105-X Gearset | Dana Spicer | S135 S150 G360CA | 3.91 Ratio | New Genuine
360KG105X | Dana Spicer Gearset | S135 / S150 / G360CA | 3.91 Ratio | New Genuine New...Regular price $1,347.74 USDSale price $1,347.74 USD Regular priceUnit price perSold out -
Vendor:Dana Off-Highway DOH27717-X | Dana Loaded Differential Case | Dana 70-B | 1.500"-23 Spline A-Gears | New OE
27717-X | Dana Spicer Loaded Differential Case | Dana 70-B | 1.500"–23 Spline | 4.56 & Up –...Regular price $394.47 USDSale price $394.47 USD Regular priceUnit price per$486.50 USDSale -
Vendor:Eaton-FullerA6910 Pistol Grip Style Shift Knob | Eaton Fuller Roadranger | Super 10 | New Genuine
A6910 Eaton Fuller Pistol Grip Shift Knob – Super 10 Roadranger | New Genuine OEM New Genuine Eaton...Regular price $69.44 USDSale price $69.44 USD Regular priceUnit price per$127.23 USDSale -
Vendor:Eaton-FullerS2543 Pistol Grip Style Shift Knob | Eaton Fuller Roadranger | Black Flipper | 10 Speed | New Genuine
S2543 Eaton Fuller Pistol Grip Shift Knob with 10-Speed Pattern – Fits 9 & 10 Speed Roadranger |...Regular price $104.44 USDSale price $104.44 USD Regular priceUnit price per$170.60 USDSale -
Vendor:Eaton-FullerS2578 Pistol Grip Style Shift Knob | Eaton Fuller Roadranger | Red and Black Flippers | 13 Speed | New Genuine
S2578 Eaton Fuller Pistol Grip Shift Knob with Pattern – 13 Speed Roadranger | New Genuine OEM New...Regular price $134.44 USDSale price $134.44 USD Regular priceUnit price per$237.16 USDSale
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.