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-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:MeritorA39496-3-717 Gearset | Meritor-Rockwell-AxleTech | RS15-120 | New Aftermarket
A39496-3 | Meritor-Rockwell-AxleTech RS15-120 Gearset | 7.17 Ratio (43/6) | New Aftermarket New aftermarket Meritor-Rockwell-AxleTech ring & pinion...Regular price $1,147.74 USDSale price $1,147.74 USD Regular priceUnit price per$1,574.47 USDSold out Sale -
Vendor:MeritorA38128-1-614 Gearset | New Take-Off Genuine Meritor-Rockwell-AxleTech F106
A38128-1 | Meritor-Rockwell-Axletech Gearset | F106 | 6.14 Ratio | New Take-Off Genuine New Take-Off Genuine Meritor /...Regular price $1,447.74 USDSale price $1,447.74 USD Regular priceUnit price perSold out -
Vendor:MeritorA37428-2-463 Gearset | Meritor-Rockwell-AxleTech | F106 | New Take-Off OEM
A37428-2 | Meritor-Rockwell-AxleTech F106 Gearset | 4.63 Ratio (37/8) | New Take-Off Genuine New Take-Off genuine Meritor-Rockwell-AxleTech ring...Regular price $1,747.74 USDSale price $1,747.74 USD Regular priceUnit price per$2,474.47 USDSold out Sale -
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 -
Vendor:Spicer Transmission62-35-98 Dana Spicer TTC Input Shaft | 6000 Series Trans | New Genuine (NOS)
62-35-98 | Dana Spicer TTC Input Shaft 6000 Series Transmission – New Genuine (NOS) The 62-35-98 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:Spicer Transmission46-30-12 Dana Spicer TTC Countershaft | 5000 Series | New Genuine (NOS)
46-30-12 Dana Spicer TTC Countershaft – 5000 Series – New Genuine (NOS) The 46-30-12 Dana Spicer TTC Countershaft...Regular price $495.00 USDSale price $495.00 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: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
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.