Fitment: For Marine 4 BBL Rochester Quadrajet 5.7L Description: 100% New and High Quality Easy Installation Direct Replacement 1 Year Warranty Profession install is highly recommend Engine:5.7L Auxiliary Venturi:7.3mm Venturi(Choke tube):28mm Main jet:185 Air correction jets:110 Idle jet:120 Needle valve:3.3 Package Include: 1* Carb W/o Product Instruction .
