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30 Spline

  • GM 8.5" Detroit Truetrac Posi 30 Spline 913A481
    $629.99 GM 8.5" Detroit Truetrac Posi 30 Spline 913A481
    The Detroit Truetrac is a helical-gear style performance differential that maximizes wheel traction and enhances driving and handling characteristics. Operation The Truetrac operates as a standard or open differential...