This Fits Your 2003 GMC Sierra 2500 HD SLT Extended Cab Pickup Fleetside 6.0L Vortec V8 CNG M/T RWD
Full size assembly image of REAR SUSPENSION. AXLE HOUSING. (1/1)

REAR SUSPENSION. AXLE HOUSING.

8. 50" & 8. 625" ring gear W/O quadsteer. W/O quadrasteer.