1956 USA Standard Gear Differential Carriers

USA Standard Gear Spartan Lockers

Spartan lockers are affordable, reliable traction. These USA Standard Gear Spartan lockers are mechanical lockers that fit into a standard differential carrier, replacing the open spider gears. They do not use thrust washers and have a revolutionary spring and pin design to make installation a snap! Spartan lockers feature high-nickel 9310 chromoly drivers and couplers for added strength. Give your vehicle great traction and save some cash. Drop in Spartan lockers for improved traction. They're available for a variety of makes and models spanning more than a half-century.

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