850 CFM Marine Carburetor

Electric Choke Mechanical Secondaries


PART# 0-80443

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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 J-style vent tubes direct fuel/fumes back into the carburetor for safe operation while on rough waters. The Holley 0-80443 Marine carburetor is designed with a universal calibration good for large cubic inch marine engines where a mechanical secondary 4150 model 4BBL with electric choke is required


  • Gold Dichromate finish for corrosion resistance and classic Holley looks
  • Universal Marine Calibration
  • Factory preset electric choke for easy startups
  • Mechanical secondaries for awesome performance
  • 30cc primary and 50cc secondary accelerator pumps for additional fuel under initial acceleration
  • Dual feed fuel inlets for constant high volume fuel delivery
  • J-Style Vent Tubes
  • Meets Coast Guard Specifications
  • Power valve blow-out protection
  • 100% wet-flow tested by Holley technicians to assure it arrives ready to run!


BoosterDown Leg
Emission Code3
FinishGold Dichromate
Fuel InletDual
Marine Engine SizeUniversal
Primary Main Jet88
Primary Power Valve6.5
Primary Pump Nozzle Size31
Product TypeCarburetor
Secondary Main Jet96
Secondary Pump Nozzle Size31
Supercharged ApplicationNo
Throttle Bore1.750 inch
Part Number0-80443

Service Parts


This part is legal for use on Uncontrolled (Non-Emissions Controlled) Vehicles or Racing Vehicles.

The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle

Racing Vehicles are vehicles that are used exclusively for racing or other forms of competition that are not registered and that may never be used on the street.

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