Eaton-Style Limited-Slip Locker For Chevy GMC GM 8.5" 8.6" Posi Unit 30 Spline

Axle Spline: 30. GMC Sierra 1500 2000-2008 All Engine with 8.6" Rear. GMC Sierra 1500 Classic 2007 All Engine with 8.6" Rear. GMC Sierra 1500 HD 2005-2006 All Engine with 8.6" Rear. GMC Sierra 1500 HD 2001-2003 All Engine with 8.6" Rear.