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:Meritor3235W413 Top Half Differential Case | Meritor-Rockwell-AxleTech | F106 F140 | New Take-Off OEM
3235W413 | Meritor Rockwell AxleTech F106 / F140 Differential Case Top Half (Plain) | New Take-Off OEM New...Regular price $367.74 USDSale price $367.74 USD Regular priceUnit price per$525.44 USDSold out Sale -
Vendor:Eaton-FullerS2283 Shift Tower Assembly | Eaton Fuller Roadranger | Super 10 | Genuine
S2283 | Eaton Fuller Super 10 Forward Tall Shift Tower Assembly | New OEM Genuine New OEM Genuine...Regular price $374.47 USDSale price $374.47 USD Regular priceUnit price per$574.47 USDSold out Sale -
Vendor:Eaton-FullerK2363 | Eaton Fuller Mid-Range Shift Tower w/Rev Stop | 4301118 | New OEM
K2363 | Eaton Fuller Roadranger Mid-Range Shift Tower with Reverse Stop | New OEM The K2363 is a...Regular price $194.74 USDSale price $194.74 USD Regular priceUnit price per$227.47 USDSale -
Vendor:Eaton-FullerA6909 Pistol Grip Style Shift Knob | Eaton Fuller Roadranger | Black Flipper | New Genuine
A6909 Eaton Fuller Pistol Grip Shift Knob – 9 & 10 Speed Roadranger | New Genuine OEM New...Regular price $77.47 USDSale price $77.47 USD Regular priceUnit price per$141.36 USDSold out Sale -
Vendor:Eaton-FullerA5021 | Eaton Fuller Input Shaft 20787 | RT7608LL RT8609 | New Genuine OEM (NOS)
A-5021 | Eaton Fuller Roadranger Input Shaft 20787 | RT7608LL / RT8609 | New Genuine NOS New Genuine...Regular price $374.47 USDSale price $374.47 USD Regular priceUnit price per$574.47 USDSale -
Vendor:Eaton-FullerA4493 | Genuine Fuller 13-Speed Shift Knob | “Puck” Style | Eaton Roadranger | New NOS
A-4493 | Eaton Fuller 13-Speed “Puck” Style Shift Knob | New NOS The A-4493 (also A4493) is a...Regular price $177.47 USDSale price $177.47 USD Regular priceUnit price perSold out -
Vendor:MeritorA40682-1-740 Gearset | Meritor Rockwell AxleTech | SSHR R155 37-5 | New
A40682-1-740 | Meritor-Rockwell-AxleTech SSHR / R155 Gearset | 7.40 Ratio (37/5) | New Aftermarket New aftermarket ring &...Regular price $1,874.47 USDSale price $1,874.47 USD Regular priceUnit price perSold out -
Vendor:MeritorA40674-6-529 Gearset | Meritor-Rockwell-AxleTech | SSHR R155 | New PAI/Excel
A40674-6-529 | Meritor-Rockwell-AxleTech SSHR / R155 Gearset | 5.29 Ratio (37/7) | New Aftermarket (PAI/Excel) New aftermarket ring...Regular price $1,274.47 USDSale price $1,274.47 USD Regular priceUnit price per$1,874.47 USDSale -
Vendor:MeritorA40674-1-529 Gearset | Meritor-Rockwell-AxleTech SSHR R155 37-7 | New Genuine
A40674-1-529 | Meritor-Rockwell-AxleTech SSHR / R155 Gearset | 5.29 Ratio (37/7) | New Genuine (NOS) New genuine Meritor-Rockwell-AxleTech...Regular price $1,447.47 USDSale price $1,447.47 USD Regular priceUnit price per$1,874.47 USDSale -
Vendor:MeritorA40306-1-683 Gearset | Meritor Rockwell AxleTech | SSHD 41-6 | Genuine OEM
A40306-1-683 | Meritor-Rockwell-AxleTech SSHD / 44K GAWR Gearset | 6.83 Ratio (41/6) | New Genuine (NOS) New genuine...Regular price $1,174.47 USDSale price $1,174.47 USD Regular priceUnit price per$1,874.47 USDSale -
Vendor:MeritorA40178-1-529 Gearset | Meritor Rockwell AxleTech | SSHD 5.29 Ratio (37-7) | New Italian
A40178-1 | Meritor-Rockwell-AxleTech SSHD-F / 44K GAWR Gearset | 5.29 Ratio (37/7) | New Aftermarket - Italian New...Regular price $1,147.74 USDSale price $1,147.74 USD Regular priceUnit price per$1,874.47 USDSale -
Vendor:MeritorA40172-1-463 Gearset | Meritor Rockwell AxleTech | SSHD Ratio 4.63 (37-8) | New Italian
A40172-1 | Meritor-Rockwell-AxleTech SSHD-F / 44K GAWR Gearset | 4.63 Ratio (37/8) | New Aftermarket - Italian New...Regular price $1,274.47 USDSale price $1,274.47 USD Regular priceUnit price per$1,874.47 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.