This is the air brake check valve modulator for the rear brakes on 2003-2009 GMC Topkick and Chevrolet Kodiak C7500, C8500, and 2004-2009 GMC Topkick and Chevrolet Kodiak T7500, T8500 trucks. This valve comes with the mounting bracket already installed. Replace your old, faulty, malfunctioning part with this brand new factory original part from GM at a fraction of the dealer price.

New. Never Installed. OEM Part. Bulk Overstock

GM part # 15243323

Alternate GM part #'s 19151024 ; 19149171

Item is number 1 in the GM diagram