4 0 GMC TopKick C7000 Radio for a 1991 GMC C7000 Topkick $89.99 USD (Used) 1991 GMC C7000 Topkick, RADIO- Model: 16138045, Type: Delco, Single Din, Six Presets, Plays: AM/FM, Weather Band, Reference images for condition. For more information about this... ConditionUsedFits To Make(s)GMCFits To Model(s)C7000 TopkickWill Fit Year(s)1991Part Number16138045Stock NumberP-68047 MLS Number12525210CategoryRadios Last Updated9/11/2025 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info