Collection: All Gearing – Discount Parts Exchange Since 1997
Heavy-Duty Differential & Transmission Gearing
Shop our complete selection of heavy-duty gear sets for Class 6, 7, and 8 trucks. We stock differential ring & pinion sets, axle gearing kits, and transmission gears from leading OEMs like Dana Spicer, Eaton, Meritor, and Rockwell. Whether you need to rebuild, re-gear, or upgrade for torque, economy, or hauling power, these genuine and aftermarket gear sets are built to perform under the toughest conditions.
Gearing Options
- Differential Gearing: OEM ring & pinion sets, matched gear pairs, spider and side gears for popular models including Dana S135, S150, DS/RS404, and Meritor 145/160 series.
- Transmission Gears: Mainshaft, countershaft, splitter, and auxiliary gears for Eaton Fuller transmissions and more.
- Condition Choices: New Old Stock (NOS), verified take-out assemblies, and premium aftermarket gearing.
Why Choose Our Gear Sets
- Application-specific expertise: Ratio recommendations for engine, tire size, and duty cycle.
- Quality assurance: Each gear inspected for wear, tooth pattern, and OEM compatibility.
- Fast shipping: U.S. warehouse in Mansfield, Ohio — international shipping available.
Fitment Help
Not sure which gearset fits your axle or transmission? Provide us your axle tag, BOM, or transmission model number — we’ll confirm the correct ratio and part number before shipping. Call 419-522-3320 for expert support.
Heavy-Duty Solutions — Built to Keep Your Drivetrain Moving.
Built to Perform. Trusted to Last.
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Vendor:truckparts4u.com53-35-12-1X Spicer TTC Input Shaft | New Genuine
53-35-12-1X Spicer / TTC Input Shaft — New Genuine The 53-35-12-1X Dana Spicer / TTC input shaft is...Regular price $295.00 USDSale price $295.00 USD Regular priceUnit price per -
Vendor:truckparts4u.com53-35-1-1X Spicer TTC Input Shaft | New Genuine
53-35-1-1X Spicer / TTC Input Shaft — New Genuine The 53-35-1-1X Dana Spicer / TTC input shaft is...Regular price $295.00 USDSale price $295.00 USD Regular priceUnit price per -
Vendor:truckparts4u.com49-35-18-1X Spicer / TTC Input Shaft | New Genuine
49-35-18-1X Spicer / TTC Input Shaft — New Genuine The 49-35-18-1X Dana Spicer / TTC input shaft is...Regular price $395.00 USDSale price $395.00 USD Regular priceUnit price per -
Vendor:truckparts4u.com49-35-10-1X Spicer / TTC Input Shaft | New Genuine
49-35-10-1X Spicer / TTC Input Shaft — New Genuine The 49-35-10-1X Dana Spicer / TTC input shaft is...Regular price $374.47 USDSale price $374.47 USD Regular priceUnit price per$444.74 USDSale -
Vendor:truckparts4u.com49-35-1-1X Spicer / TTC Input Shaft | New Genuine
49-35-1-1X Spicer / TTC Input Shaft — New Genuine The 49-35-1-1X Dana Spicer / TTC input shaft is...Regular price $395.00 USDSale price $395.00 USD Regular priceUnit price per -
Vendor:truckparts4u.com46-362-16 Dana Spicer, TTC | 311660X Mainshaft Kit | New Genuine (NOS)
46-362-16 Dana Spicer / TTC Mainshaft — 5000 Series — New Genuine (NOS) The 46-362-16 Dana Spicer /...Regular price $495.00 USDSale price $495.00 USD Regular priceUnit price per -
Vendor:truckparts4u.com46-35-65 Dana Spicer TTC Input Shaft | 5000 Series | New Genuine (NOS)
46-35-65 Dana Spicer / TTC Input Shaft — 5000 Series — New Genuine (NOS) The 46-35-65 input shaft...Regular price $395.00 USDSale price $395.00 USD Regular priceUnit price per -
Vendor:truckparts4u.com46-35-49 Dana Spicer TTC Input Shaft | 5000 Series 5652 | New Genuine (NOS)
46-35-49 Dana Spicer / TTC Input Shaft — 5000 Series 5652 — New Genuine (NOS) The 46-35-49 input...Regular price $395.00 USDSale price $395.00 USD Regular priceUnit price per -
Vendor:truckparts4u.com46-35-104 Dana Spicer TTC Input Shaft | 5000 Series 5752C, 5753A | New Genuine (NOS)
46-35-104 Dana Spicer / TTC Input Shaft — 5000 Series — New Genuine (NOS) The 46-35-104 input shaft...Regular price $225.00 USDSale price $225.00 USD Regular priceUnit price per -
Vendor:truckparts4u.com46-35-103 Dana Spicer TTC Input Shaft | 5000 Series | New Genuine (NOS)
46-35-103 Dana Spicer / TTC Input Shaft — 5000 Series — New Genuine (NOS) The 46-35-103 input shaft...Regular price $395.00 USDSale price $395.00 USD Regular priceUnit price per -
Vendor:truckparts4u.com46-30-12 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 per -
Vendor:truckparts4u.com432-0668 | Fabco TC200 Transfer Case Gear | Navistar 1677313C1 | New Genuine (NOS)
432-0668 Fabco Intermediate Shaft Gear is a new (NOS) genuine replacement part for Fabco TC200 Transfer Cases. Also...Regular price $2,287.47 USDSale price $2,287.47 USD Regular priceUnit price per
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.