Carburetor, Holley, Street Avenger, 570 CFM, Manual Choke, Vac. Secondaries

Holley Street Avenger Carburetor, 570 CFM, Manual Choke, Vacuum Secondaries

570 CFM four-barrel carburetor with manual choke, vacuum secondaries and adjustable float levels

Improve throttle response and fuel delivery with this genuine Holley Street Avenger four-barrel carburetor. Featuring a 570 CFM airflow rating, this carburetor is calibrated for street performance, providing responsive acceleration, strong low-end torque and consistent fuel metering. Its vacuum-operated secondaries feature Holley's quick-change spring system, allowing secondary opening characteristics to be adjusted without removing the vacuum diaphragm housing. A manual choke provides driver-controlled cold-start enrichment. Built around Holley's 4150 square-bore configuration, this carburetor features a polished aluminum body, dual fuel inlets and externally adjustable float levels for convenient tuning. Four vacuum ports accommodate compatible ignition, PCV and accessory connections, while the standard 5-1/8" air cleaner flange accepts a wide range of aftermarket air cleaners. Designed for gasoline-powered, carbureted engines with compatible intake manifolds, the Street Avenger is suitable for street performance applications where precise fuel calibration and adjustability are desired.

Features • Genuine Holley Street Avenger carburetor, #0-81570 • 570 CFM four-barrel airflow capacity • Driver-operated manual choke system • Vacuum-operated secondary throttle plates • Quick-change vacuum secondary spring system • Polished aluminum carburetor construction • Holley 4150 square-bore mounting pattern • Dual 5/8"-18 inverted flare fuel inlets • Externally adjustable fuel bowl float levels • Four vacuum ports for engine accessories • Standard 5-1/8" air cleaner mounting flange • Factory-installed #64 primary and #68 secondary jets • Designed for gasoline-powered street applications