Holley Carburetor Trick Kit 4bbl D/P 4150 Series # HO37-485Holley Carburetor Trick Kit 4bbl D P 4150 Series # HO37 485 Carburetor Rebuild Renew Kit, Holley 4150, Models, Kit Rebuild Kit Type: Rebuild kit Quantity: Sold as a kit. Do you need to refurbish your Holley remanufactured carburetor? A Holley remanufactured kit brings your carb back to original specs and like new condition! These remanufactured carburetor Renew kits from Holley come complete with all of the necessary gaskets, O rings, pump