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650 CFM Four Barrel Carburetor All Holley Marine Carburetors are designed to meet Coast Guard specifications. A marine Carburetors fuel metering system is calibrated to compensate for unique engine loads found on boats. The Jstyle vent tubes direct spilt fuel/fumes back into the carburetor for safe operation while on rough waters. Model 4175 Spread Bore; Electric Choke; Vacuum Secondary; QuadraJet Replacement Installation Notes
Marine Carburetors should never be used on street applications. Features
Model 4175
Quadra-Jet replacement
Vacuum secondaries
Electric choke
30cc accelerator pump
5 airhorn NOTE: May require spacer to clear water outlet
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Bell housings
Air & Fuel