Buy 2014 Gmc Sierra 2500 HD 6.6L Duramax V8 DIESEL A/T 4WD SLE Crew Cab Pickup Fleetside Differential - OEM Gmc Part # 20984339

11. 50 ring gear. 1ST design. 2ND design. W/DUAL rr wheels. W/O dual rr wheels.

AAGP. AAH2. Sierra; 10.50; Left. Sierra; 10.50; Right. Sierra; 10.50; w/Limited Slip. Sierra; 10.50; w/o Limited Slip. Sierra; 11.50; w/Limited Slip. Sierra; 11.50; w/o Limited Slip. Sierra; 11.50; w/o Wide Track. Sierra; 11.50; w/Wide Track. Sierra; 2500 Series; 10.50. Sierra; 2500 Series; 11.50. Sierra; 2500 Series; 2WD; 6L90 Trans; Allison 1000 Trans; Crew Cab; Long Wheelbase. Sierra; 2500 Series; 2WD; 6L90 Trans; Allison 1000 Trans; Crew Cab; Short Wheelbase. Sierra; 2500 Series; 2WD; 6L90 Trans; Allison 1000 Trans; Regular Cab. Sierra; 2500 Series; 2WD; 6L90 Trans; Two Piece; Crew Cab; Long Wheelbase. Sierra; 2500 Series; 2WD; 6L90 Trans; Two Piece; Crew Cab; Short Wheelbase. Sierra; 2500 Series; 2WD; 6L90 Trans; Two Piece; Extended Cab; Long Wheelbase. Sierra; 2500 Series; 2WD; 6L90 Trans; Two Piece; Extended Cab; Short Wheelbase. Sierra; 2500 Series; 4WD; 6L90 Trans; One Piece; Crew Cab. Sierra; 2500 Series; 4WD; 6L90 Trans; One Piece; Extended Cab; Long Wheelbase. Sierra; 2500 Series; 4WD; 6L90 Trans; One Piece; Extended Cab; Short Wheelbase. Sierra; 2500 Series; 4WD; 6L90 Trans; One Piece; Regular Cab. Sierra; 2500 Series; 4WD; 6L90 Trans; Two Piece. Sierra; 2500 Series; 4WD; Allison 1000 Trans; One Piece; Crew Cab. Sierra; 2500 Series; 4WD; Allison 1000 Trans; One Piece; Extended Cab.