Collection: Eaton & Dana Differential Parts | NOS OEM Parts
Dana-Spicer & Eaton Differential Gearsets — Ready for Work
Stock up on Dana-Spicer and Eaton ring & pinion gear sets for the axle models fleets run every day: S135, S150, 360CA, DS/RS404, S400, and more. Need lower RPM on the highway or more pull off the line? These gear sets deliver clean patterns and proven durability when set up to spec.
What We Stock
- OEM NOS & Take-Outs: Genuine factory parts and verified take-outs for OE fit and finish.
- Quality Aftermarket: Solid options for cost-effective ratio changes and rebuilds.
- Popular Ratios: From fuel-saver to heavy-haul (availability varies by axle model).
Why Buy From Us
- Real-world Spec Help: We match ratios to engine, transmission, and tire size so the combo works.
- Shop-Checked: Teeth, patterns, and compatibility inspected before it ships.
- Fast Freight: LTL to verified commercial addresses — international shipping available.
Common Uses
Line-haul, vocational, municipal, and utility fleets doing rebuilds, ratio swaps, or drivetrain refreshes that have to hold up under load.
Need Fitment Help?
Have an axle tag, BOM, or casting number? Call 419-522-3320. We’ll confirm the correct gear set before you order.
Heavy-Duty Solutions — Built to Keep Your Drivetrain Moving.
Built to Perform. Trusted to Last.
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Vendor:Eaton / Dana Heavy Axle94378 | Eaton / Dana-Spicer 23105-C 39 Spline Axle Gears | New OEM
94378 (also listed as 094378) is a set of genuine Eaton/Dana-Spicer axle gears, designed for use in Eaton...Regular price $157.47 USDSale price $157.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle86784 | Eaton / Dana-Spicer DS480 A-Gears | 22 Spline | New Genuine
86784 Eaton Dana A-Gears | DS480 RS480 23121 23421 | 22 Spline | New Genuine Product Summary:86784 (also...Regular price $124.47 USDSale price $124.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle81470 | Eaton Dana-Spicer Oil Pump – 44DS, 44DT, 44DP Power Divider (New Genuine)
81470 Eaton Dana Oil Pump — 44DS / 44DT / 44DP Power Divider | 692576 / 421903C91 Cross...Regular price $387.47 USDSale price $387.47 USD Regular priceUnit price per -
Vendor:truckparts4u.com706248-4X Gearset | Dana D706248-4, Meritor/AxleTech, 7/41 R5.86 – Genuine
706248-4X Dana Spicer Gearset | R5.29 Ratio | 12.50" | Off-Highway | New Product Summary:Part Number: 706248-4X –...Regular price $774.47 USDSale price $774.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle68909R94 Gear Set | Genuine International RA39, Dana F155/F170 7.80 Ratio
Product Summary Part Number: 68909R94Product: Dana, International – GenuineCompatibility: International RA39, Dana F155 & F170Tooth Count: 39/5Ratio: 7.80...Regular price $1,774.47 USDSale price $1,774.47 USD Regular priceUnit price per$1,974.47 USDSale -
Vendor:Detroit Locker597248C91 Gearset | International RA474, RA57, W230, 3.73 Ratio – Genuine Dana Spicer
Product Summary Part Number: 597248C91Brand: International / DanaCondition: NewApplication: W230S, W460, RA474Ratio: 3.73 Key Features/Specifications Ring Gear: 483441C1...Regular price $947.74 USDSale price $947.74 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle40638 | Eaton / Dana-Spicer 24V 2-Speed Diff Lock Motor | New OEM (NOS)
40638 Eaton Dana 2-Speed Motor — 24V Electric Diff Lock | 113743 | Fasco 2807-508-023 | New Genuine...Regular price $197.74 USDSale price $197.74 USD Regular priceUnit price per -
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:Detroit Locker390KQ100X Dana Spicer S400 Differential Case Kit | Ratio 2.81–2.92 | New OEM
Part Number: 390KQ100XBrand: Dana SpicerCondition: New OEMSeries: S400Application: Front and RearRatio Range: 2.81–2.92 This is a Genuine Dana...Regular price $524.47 USDSale price $524.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle390KG213-X Gearset | Genuine Dana Spicer S400 Rear R3.21, International 2500199C91
Product Summary Part Number: 390KG213-XCondition: NewBrand: SpicerAxle Model: S400-RRGear Ratio: 3.21Invoice: KIT-GEAR SET 3.21RRRing Gear Size: 15.35 inches...Regular price $1,574.74 USDSale price $1,574.74 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle390KG120-X Gearset | Dana Spicer S400 R3.54, International 2500209C91 – New
Product Summary Part Number: 390KG120-XBrand: SpicerAxle Model: S400Gear Ratio: 3.54Ring Gear Size: 15.35 inchesCondition: New Key Features/Specifications Ring...Regular price $1,574.47 USDSale price $1,574.47 USD Regular priceUnit price per -
Vendor:Eaton / Dana Heavy Axle390KG106-X Gearset | Dana Spicer S400F R3.91, International 2500160C91 – New
Product Summary Part Number: 390KG106-XBrand: SpicerOEM Reference: International 2500160C91Axle Model: S400FGear Ratio: 3.91Condition: New Key Features/Specifications Ring Gear...Regular price $1,574.47 USDSale price $1,574.47 USD Regular priceUnit price per
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