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 Transmission63-35-38-1X Dana Spicer TTC Input Shaft CM60 Series | New Genuine (NOS)
63-35-38-1X | Dana Spicer TTC Input Shaft – CM60 Series – New Genuine (NOS) The 63-35-38-1X Dana Spicer...Regular price $395.00 USDSale price $395.00 USD Regular priceUnit price perSold out -
Vendor:Spicer Transmission53-35-4-1X Input Shaft | Dana Spicer | TTC | New Genuine
53-35-4-1X | Spicer / TTC Input Shaft — CM5552 — New Genuine The 53-35-4-1X Dana Spicer / TTC...Regular price $395.00 USDSale price $395.00 USD Regular priceUnit price perSold out -
Vendor:Eaton-Fuller4303556 Eaton Fuller Super 10 Forward Housing Shift Lever | New OEM Genuine | Tall Shift Lever
4303556 Eaton Fuller Super 10 Forward Housing Shift Lever – New OEM Genuine – S2283 Tall/High – 11.250”...Regular price $197.47 USDSale price $197.47 USD Regular priceUnit price per$274.47 USDSold out Sale -
Vendor:Eaton-Fuller4300810 Super 10 Insert Valve | Eaton Fuller | RTLO 10 Speed | New (NOS) OEM Genuine
4300810 | Eaton Fuller Super 10 Insert Valve | RTLO 10-Speed | New Genuine NOS New Genuine Eaton...Regular price $44.74 USDSale price $44.74 USD Regular priceUnit price per$119.66 USDSale -
Vendor:Spicer Transmission40-35-21-1X Dana Spicer TTC Input Shaft | ES42-5 | New Genuine
40-35-21-1X Dana Spicer TTC Input Shaft — ES42-5 — New Genuine The 40-35-21-1X Dana Spicer TTC input shaft...Regular price $295.00 USDSale price $295.00 USD Regular priceUnit price perSold out -
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: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
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.