2 0 Aisin 4spd Auto Transmission for a 2006 GMC W4500 Newly Listed Contact for price (Used) 2006 Gmc W4500, TRANSMISSION ASSEMBLY- Make: Aisin Serial: 5G2687 Model: Engine Make: Isuzu Engine Model: 4HK1-TC For more information about this item, give us a call. We ship... ConditionUsedEngine ModelIsuzu 4HK1-TCFits To Make(s)GMCFits To Model(s)W4500Will Fit Year(s)2006Stock NumberP-113582 MLS Number13963407CategoryTransmissions Last Updated11/4/2025 LocationElkton, MD, US Sold ByCRG Heavy Truck Parts (844) 402-___ SHOWNUMBERCall Seller Email Seller Save More Info