VALLEY TRUCK PARTS part description

Features & Benefits

  • Units are disassembled and remanufactured to meet or exceed OE specifications
  • Cases are inspected and remade to factory tolerances
  • All bearings, washers, snap rings, shims, and bolts are replaced with new parts
  • Differentials undergo final testing to ensure reliable performance in real-world conditions

Valley Truck Parts Dana Front Differential

The Valley Truck Parts front differential delivers performance that matches factory units at a more accessible price. This differential is a direct replacement for Dana/Spicer heavy duty differentials.

Product Attributes

ABS Sensor (Yes/No) No
Axle Spline Count and Type 41
Bull Gear Number No
Carrier Casting Number 129539, 129540, 675968, 130809
Double Reduction (Yes/No) No
Gear Set Number 513385
Input Spline Count 44
Limited Slip (Yes/No) No
Main Differential Lock (Yes/No) No
Manufacturer Dana
Model DSP40
Parking Brake (Yes/No) No
Pinion Gear Number 130120 / 132303
Position Front
Power Divider Air Lock (Yes/No) Yes
Ratio 3.25
Remanufactured By Valley Truck Parts
Ring Gear Number 127389 / 132232
Speed (1,2) 1
Spur Shaft/Cross Shaft Number No
Studded Carrier (Yes/No) No
Torque Rod Type No
For over 60 years, Valley Truck Parts® has provided high-quality heavy duty parts for trucks, trailers, and other commercial vehicles. It specializes in new and remanufactured differentials, PTOs, steering gears, fifth wheels, and complete transmission systems for popular brands, including Dana/Spicer, Holland, Rockwell, and Timken. It also offers mobile diagnosis and refurbishment services for engines, cabs, transmissions, driveshaft, rear tandem axles, and so much more. The company is currently headquartered in Grand Rapids, with operations across 16 locations across the continental United States. With Valley Truck Parts, you can look forward to quality performance and reliable service at a price that's easy on the wallet.

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