Buy with confidence We are the premier carburetor shop in the country with over 30 years experience we are offering you this 4 barrel Rochester Quadrajet with electric choke made marine to replace any 350/5.7 Mercruiser/Crusader 260hp Original remote choke model. Every carburetor goes thru a complete and thorough replacement of all internal parts such as jets,float,needle and seat and all other parts,we also rebush the throttle shaft to avoid vacuum leaks and before we paint the carburetor we bench test them to factory specs.each carburetor comes with a base gasket and will also be bench tested before shipping once more ! We have all engine sizes and also remote choke models we are the only shop to offer you core credit if 50.00 Dls if you send your rebuilable carb back(please ask us for details) Every carburetor comes with six months warranty and also we will gladly give you installation tips and recommendations. All Our items and internal parts are made in AMERICA.