Holley Replacement Carburetors are engineering to improve performance and keep you emission legal. The 0-6210 is a Model 4165(TM) Spread Bore designed to fit several applications Product Features:Gold Dichromate Finish For Corrosion Resistance w/Classic LookImproves Performance Over Stock CarburetorFor Vehicles That Came Factory Equipped With Divorced ChokeAll Emissions ProvisionsMechanical Secondaries For Awesome PerformanceDual Accelerator Pumps For Add. Fuel Under Initial AccelerationPower Valve Blow-Out Protection100% Wet Flow Tested By Holley TechniciansArrives Ready To Run