Semi Truck Differentials

Semi Truck Differentials and Drivetrain Components

We have the last word in drivetrain parts and assemblies--Performance differentials for demanding applications. Learn more about our offerings and the DSP40 & DSP404 below.

Altogether, semi truck differentials are essential for many applications.  From industrial and agriculture to mining and logging, these parts help ensure your truck's power is being transferred efficiently.

Save time and money, avoid unnecessary weight, downtime, and tedious maintenance.  Undeniably, we are the largest provider of front and rear differentials and drivetrain parts.  With many options from used to rebuild, you are sure to find the right parts at LKQ Heavy Truck.

DSP40 & DSP404 Differentials

The DS404 promises increased productivity for your operations:

  • Lower fifth wheel heights increases payload capacity and improves vehicle stability
  • DS404 has improved system supplies maximum lubrication to critical areas
  • Optimum powertrain specs thanks to a broader range of hypoid primary gear ratios
  • Larger inter-axle differential assembly and lockout clutch
  • Best-in-class sealing systems that keep lube in and dirt and grime out
  • Overall time and money savings, with drain intervals now up to 500,000 miles

The DSP40 delivers miles of proven performance, keeping you where you want to be—on the road. You get:

  • 15.4” gearing with Premium Process Pinions
  • The most popular ratios with appropriate steps for a broad range of applications
  • Billions of miles of proven performance on the DSP40
  • Superior protection against leaks
  • Exceptional weight savings, at 16 pounds lighter than the competition, with 25% more fasteners
  • Premium bearings, with 33% more bearings per pinion

Ready for either a DS404, DSP40, or any other differential part? Save fuel, eliminate bearing adjustment, and enjoy maximum traction and durability in adverse driving conditions. These parts were developed to avoid additional heat and horsepower loss while offering vast weight savings and meshing with approved lubricants.  Our rebuilders at LKQ understand this.  We put our customers first and stand behind our products.  Learn more about our inspection process and LKQ Heavy Truck here.

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The DSP40 & DSP404

You can count on our DSP40 and DS404 front differential assemblies for the long haul. These world-class drivetrain components put power to the ground when you need it most.  These parts from Easton - Spicer feature maintenance-free designs, rebuildable components, and on-demand power that facilitates smooth, automatic operation and unmatched strength.

Eaton-Spicer to Meritor-Rockwell, LKQ has the Parts

Whichever you choose, you will get LKQ Heavy Truck’s unmatched service. We treat your truck
like family, handling it with passion, care, and industry expertise.

Of course, we offer a premium selection and the lowest prices for DSP40, DS404, and all other differential units no matter your need or application. Shop our massive inventory, including new, used, and rebuilt differential assemblies, all at unbeatable prices.

Not sure which item is the best for you? We can help you select the part which works for your heavy-duty or semi-truck.  Contact us or visit one of our LKQ Heavy Truck locations.

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