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The USA Standard Spartan Locker for AMC Model 20 replaces the carrier spiders to deliver mechanical 100% lockup traction in a compact lunchbox-style unit. Yukon’s spring-and-pin design removes the need for thrust washers and simplifies installation, and heat-treated 9310 steel internals add strength, making this locker a practical traction upgrade for AMC Model 20 applications.
USA Standard Spartan Locker For Model 20 Diff w/ 29 Spline Axles / Incl. Heavy-Duty Cross Pin Shaft
