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:Eaton-FullerA4491 A-4491 Aftermarket Fuller 13-Speed "Puck" Style Knob | New, Not Plastic | Heavy-Duty Machined Aluminum
A-4491 | Eaton Fuller 13-Speed “Puck” Style Shift Knob | Machined Aluminum | New NOS The A-4491 is...Regular price $43.74 USDSale price $43.74 USD Regular priceUnit price per$57.47 USDSold out Sale -
Vendor:Eaton / Dana Heavy Axle40635 | Eaton / Dana-Spicer 12V 2-Speed Diff Lock Motor | New OEM (NOS)
40635 Eaton Dana 2-Speed Motor | 12V Electric Diff Lock | 113743 | Fasco 2807-508-021 | New Genuine...Regular price $277.74 USDSale price $277.74 USD Regular priceUnit price per -
Vendor:Meritor3891Q1629 Meritor Rockwell Axletech Planetary Spur Gear | T2111 Transfer Case | Genuine OEM
3891Q1629 | Meritor Rockwell Axletech Planetary Spur Gear – T2111 – New Genuine Genuine Meritor / Rockwell /...Regular price $384.74 USDSale price $384.74 USD Regular priceUnit price per$477.47 USDSale -
Vendor:Eaton / Dana Heavy Axle360KG110-X Gearset | Dana Spicer | S135 S150 G360CA| 6.14 Ratio | New Genuine
360KG110X | Dana Spicer Gearset S135 S150 G360CA | 6.14 Ratio | New Genuine The 360KG110X is a...Regular price $824.47 USDSale price $824.47 USD Regular priceUnit price per$974.47 USDSale -
Vendor:Dana Light DutyDana 80 Carrier Housing — No Tubes, Cover, or Internals | ~3.930" I.D. | Cross-Ref 286CC102-17X
Dana 80 Carrier Housing — Center Section Only | ~3.930" Tube I.D. | Used OEM Dana 80 center...Regular price $327.47 USDSale price $327.47 USD Regular priceUnit price perSold out -
Vendor:Spicer Transmission98-30-5 Spicer 1241 Power Tower Gear SX98-30-5 | TTC Tremec | New Genuine
98-30-5 | Spicer 1241 Power Tower Gear – Intermediate (U-6) – New Genuine The 98-30-5 is a New...Regular price $464.74 USDSale price $464.74 USD Regular priceUnit price per -
Vendor:truckparts4u.com3785597 | GM H052 / HO52 Gear Set |4.57 Ratio (1949–1972 Trucks, Aftermarket NOS)
3785597 | GM H052 / HO52 Gear Set | 4.57 Ratio | New Aftermarket (NOS) New Old Stock...Regular price $397.74 USDSale price $397.74 USD Regular priceUnit price per$494.75 USDSale -
Vendor:MeritorKIT2229 Nest Kit F106 | Meritor-Rockwell-AxleTech | 34 Spline | New Aftermarket
KIT2229 | Meritor Rockwell AxleTech F106-34 Spline Differential Nest Kit | 2234-N-872 Axle Gears | New Aftermarket New...Regular price $374.47 USDSale price $374.47 USD Regular priceUnit price per$494.44 USDSale -
Vendor:Eaton-FullerK3352 | Eaton Fuller Wiring Harness | RTAO Series | Includes 691388 & 691439 | New OEM
K3352 | Eaton Fuller Roadranger RTAO Series Wiring Harness Kit w/ 691388 & 691439 Adaptors | New OEM...Regular price $497.47 USDSale price $497.47 USD Regular priceUnit price per -
Vendor:MeritorA35618-5-683 Gearset | Genuine Meritor Rockwell AxleTech | Q100, Q145 | New
A35618-5 | Rockwell Meritor Q100 Q145 Ring & Pinion Gear Set – 6.83 Ratio – New Genuine This...Regular price $1,747.74 USDSale price $1,747.74 USD Regular priceUnit price perSold out -
Vendor:Spicer Transmission98-30-9-1X Spicer Aux Countershaft 1241C / P1241C | New Aftermarket Replacement
98-30-9-1X Spicer Auxiliary Countershaft — 1241C / P1241C — New Aftermarket Replacement The 98-30-9-1X auxiliary countershaft is a...Regular price $447.74 USDSale price $447.74 USD Regular priceUnit price perSold out -
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
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.