Collection: Eaton & Dana Spicer Differential and Axle Parts | NOS OEM Parts
Eaton & Dana Spicer Differential and Axle Parts | NOS & OEM Gears
High-quality Dana Spicer and Eaton differential ring & pinion gearsets, axle gears, and related drivetrain components. We carry New Genuine, New Old Stock (NOS), and verified take-out parts for popular heavy-duty axles including S135, S150, G360CA, DS/RS series, and more.
Whether you need better highway fuel economy, stronger pulling power, or a reliable rebuild, we have the right gear ratio in stock and ready to ship from Mansfield, Ohio.
Call 419-522-3320 for expert help matching the correct ratio to your engine, transmission, and tire setup.
What We Stock
- Dana Spicer Ring & Pinion Gearsets — New Genuine and NOS for S135, S150, G360CA and other popular models
- Eaton Differential Gears — Side gears, spider gears, and full nest kits
- Popular Ratios — From fuel-efficient highway gears to deep reduction off-road and vocational ratios
- Condition Options — New OEM, NOS, and inspected take-out gearing
Why Buy From DPX
- Expert Ratio & Fitment Assistance — We help you choose the right gear for your specific application
- Quality Inspected Parts — Teeth, backlash, and patterns checked before shipping
- Fast Shipping — Parcel or LTL from our Ohio warehouse. International shipping available
- Hard-to-Find NOS Inventory — Many parts no longer available from dealers
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 for instant parts identification.
Open DPX Drivetrain Tools Hub →
Common Applications
Line-haul, vocational, construction, municipal, utility fleets, and heavy equipment doing differential rebuilds, ratio changes, or full drivetrain refreshes.
Need help finding the right gearset? Send us your axle tag, BOM number, or current ratio — we’ll verify compatibility fast. Call 419-522-3320.
Heavy-Duty Solutions — Built to Perform. Trusted to Last.
Discount Parts Exchange (DPX) — Since 1997.
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Vendor:Eaton / Dana Heavy Axle401KG126-X Gearset | Genuine Dana/Spicer N400 Front R6.14, International 1665350C91
Product Summary Part Number: 1665350C91 / 401KG126-XCondition: NewBrand: SpicerAxle Model: N400 / N340Gear Ratio: 6.14Ring Gear Size: 15.500...Regular price $1,574.47 USDSale price $1,574.47 USD Regular priceUnit price perSold out -
Vendor:Eaton / Dana Heavy Axle390KQ100X Dana Spicer S400 Differential Case Kit | Ratio 2.81–2.92 | New OEM
390KQ100X | Dana Spicer S400 Differential Case Kit | 2.81–2.92 Ratio – New Genuine (NOS) 390KQ100X is a...Regular price $524.47 USDSale price $524.47 USD Regular priceUnit price per$1,589.32 USDSale -
Vendor:Eaton / Dana Heavy Axle390KG213-X Gearset | Genuine Dana Spicer S400 Rear R3.21, International 2500199C91
390KG213-X | Dana Spicer S400 Rear Gear Set | 3.21 Ratio – New Genuine (NOS) 390KG213-X (International cross...Regular price $1,147.74 USDSale price $1,147.74 USD Regular priceUnit price per$1,574.74 USDSale -
Vendor:Eaton / Dana Heavy Axle390KG120-X Gearset | Dana Spicer S400 R3.54 | International 2500209C91 | New
390KG120-X | Dana Spicer S400 Rear Gear Set | 3.54 Ratio – New Genuine (NOS) 390KG120-X (International cross...Regular price $1,174.47 USDSale price $1,174.47 USD Regular priceUnit price per$1,574.47 USDSale -
Vendor:Eaton / Dana Heavy Axle390KG106-X Gearset | Dana Spicer S400F R3.91, International 2500160C91 – New
390KG106-X | Dana Spicer S400F Rear Gear Set | 3.91 Ratio – New Genuine (NOS) 390KG106-X (International cross...Regular price $1,174.47 USDSale price $1,174.47 USD Regular priceUnit price per$1,574.47 USDSale -
Vendor:Eaton / Dana Heavy Axle390KG102-X Gearset | Used Dana Spicer S400-R 3.07 Ratio | International 2500158C91
390KG102-X-U | Dana Spicer S400-R Ring & Pinion Gear Set | 3.07 Ratio – Used 390KG102-X-U (International cross...Regular price $847.74 USDSale price $847.74 USD Regular priceUnit price per$1,147.74 USDSale -
Vendor:Eaton / Dana Heavy Axle390DU103 Flange Half | Dana Spicer S400 | Ratio 3.21–3.73 | NOS - Genuine
390DU103 | Dana Spicer S400 Differential Flange Half | Casting 390DU102 – New Genuine (NOS) 390DU103 (casting 390DU102)...Regular price $177.47 USDSale price $177.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle360SR104-1 Axle Shaft | Dana Spicer | S135 S150 G360CA | 36 Spline | New Genuine Take-Out
360SR104-1 | Dana Spicer S135 S150 Rear Axle Shaft | 36 Spline | New Genuine Take-Out 360SR104-1 (also...Regular price $474.47 USDSale price $474.47 USD Regular priceUnit price per$1,280.85 USDSale -
Vendor:Eaton / Dana Heavy Axle360KG120-X Gearset | Dana Spicer | S135 S150 G360CA | 5.38 Ratio | New Genuine
360KG120X | Dana Spicer Gearset S135 S150 G360CA | 5.38 Ratio | 1697157C91 | New Take-Out The 360KG120X...Regular price $1,347.74 USDSale price $1,347.74 USD Regular priceUnit price perSold out -
Vendor:Eaton / Dana Heavy Axle360KG105-X-U Gearset | Dana Spicer | S135 S150 G360CA | 3.91 Ratio | Used Genuine
360KG105X-U | Dana Spicer Gearset S135 S150 G360CA | 3.91 Ratio | 1697153C91 | Used Ring & Pinion...Regular price $974.44 USDSale price $974.44 USD Regular priceUnit price per$1,147.74 USDSale -
Vendor:Eaton / Dana Heavy Axle360KG104-X Gearset | Dana Spicer | S135 S150 G360CA | 3.73 Ratio | New Genuine
360KG104X | Dana Spicer Gearset S135 S150 G360CA | 3.73 Ratio | 1695921C91 | New Genuine The 360KG104X...Regular price $1,074.74 USDSale price $1,074.74 USD Regular priceUnit price per$1,347.74 USDSale -
Vendor:Eaton / Dana Heavy Axle360KG102-X Gearset | Dana Spicer | S135 S150 G360CA | 3.38 Ratio | New Genuine
360KG102X | Dana Spicer Gearset S135 S150 G360CA | 3.38 Ratio | 1697150C91 | New Genuine The 360KG102X...Regular price $947.74 USDSale price $947.74 USD Regular priceUnit price per$1,347.74 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.