This Fits Your 2012 GMC Sierra 2500 HD 6.6L Duramax V8 DIESEL A/T 4WD SLT Crew Cab Pickup Fleetside
Full size assembly image of REAR SUSPENSION. SUSPENSION COMPONENTS. (1/1)

REAR SUSPENSION. SUSPENSION COMPONENTS.

12MM. 14MM. Front. Fwd. Inner. Outer.