2007 GMC Sierra Differential Carrier Sierra 2500 HD - 4WD - GM 10.5 in. Full Float Rear - 14 Bolt Cover - Standard Open Carrier Case - 4.10 And Down Carrier Break - 4.125 in. Deck Height - Bare w/o Internal Gears - Rear guaranteed to replace your current 2007 GMC Sierra Differential Carrier Sierra 2500 HD - 4WD - GM 10.5 in. Full Float Rear - 14 Bolt Cover - Standard Open Carrier Case - 4.10 And Down Carrier Break - 4.125 in. Deck Height - Bare w/o Internal Gears - Rear. 2007 GMC Sierra Differential Carrier comes new OEM 2007 GMC Sierra Differential Carrier aftermarket new 2007 GMC Sierra Differential Carrier of remanufactured 2007 GMC Sierra Differential Carrier Sierra 2500 HD - 4WD - GM 10.5 in. Full Float Rear - 14 Bolt Cover - Standard Open Carrier Case - 4.10 And Down Carrier Break - 4.125 in. Deck Height - Bare w/o Internal Gears - Rear.