Holley Performance 0-9022 Marine Carburetor; 4 bbl; 800 cfm; Model 4150; Mech. Secondary; Manual Choke; Gas; Dual Fuel Inlet; Universal Calibration; Gold Dichromate Finish;Category: Manual Choke New CarburetorCarburetorMarine CarburetorMarine Carburetor; 4 bbl; 800 cfm; Model 4150; Mech. Secondary; Manual Choke; Gas; Dual Fuel Inlet; Universal Calibration; Gold Dichromate Finish;FEATURES:Gold Dichromate Finish For Corrosion Resistance w/Classic Look,Universal Marine Calibration,Manual Choke For Precise Cold Start Control,Mechanical Secondaries For Awesome Performance,Accelerator Pumps For Additional Fuel On 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 Percent Wet-Flow Tested To AssHolley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.