850CFM Carburetor - Marine w/Electric Choke

The 850CFM Carburetor - Marine w/Electric Choke from Quick Fuel Technology is purpose-built for serious boaters and marine engine builders who demand reliable, repeatable fuel delivery in saltwater and freshwater applications. If you've spent years on the water, you know that carburetor choice directly impacts throttle response, fuel economy, and engine reliability—especially in the harsh marine environment. This four-barrel unit is engineered to replace or upgrade aging or undersized carburetors on mid-range displacement marine engines, delivering the precise air-fuel mixture needed for consistent performance across idle, cruise, and wide-open throttle conditions.

Built from aluminum and finished in black, the 850 CFM marine carburetor features a square bore design with dual inlet ports, allowing flexible fuel supply plumbing on modern and retrofit installations. The electric choke eliminates cold-start guesswork and provides automatic enrichment on initial startup, while the mechanical secondary design ensures progressive fuel delivery as engine load increases—critical for smooth acceleration and fuel efficiency under varying sea conditions. At 9.35 lbs and measuring 11.4 x 7.9 x 12.3 inches, it fits compact engine compartments without sacrificing flow capacity or internal fuel management sophistication that Quick Fuel Technology is known for in the racing and marine sectors.

This carburetor is ideal for anglers running mid-sized inboard or outboard conversions, wakeboard boat owners upgrading fuel delivery, and marine mechanics rebuilding engines for consistent performance. The dual inlet design accommodates both fuel return and supply lines, essential for marine closed-loop fuel systems that reduce vapor lock in high-heat engine bays. Installation requires basic carburetor tuning knowledge and compatibility verification with your specific intake manifold bore diameter; professional marine engine builders commonly recommend this unit for naturally aspirated engines in the 300–500 hp range seeking reliable, affordable fuel management without electronic fuel injection complexity.