USA Standard Gear (SL GM12-30) Spartan Locker for GM 12 Bolt differential with 30 spline axles
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<b>[Product Information]</b><br>
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<li>Easy, drop-in installation</li>
<li>Made from 9310 steel</li>
<li>Heat treated and precision cut teeth</li>
<li>Backed by 1 year warranty</li>
<li>Fits GM 12 Bolt Passenger Car or Truck - 30 Spline Axles</li>
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