Performance Carburetor 600CFM 4150 Series

The HOLLEY Performance Carburetor 600CFM 4150 Series is a double-pumper four-barrel carburetor engineered for high-performance engine applications requiring precise fuel delivery and reliable operation under demanding conditions. Designed with a square bore configuration and manual choke, this 600 CFM unit delivers the air-fuel metering consistency that serious engine builders and performance enthusiasts depend on for both street and competition duty.

The 4150 platform features mechanical secondary operation with dual inlet fuel supply, allowing synchronized fuel flow that responds immediately to throttle input across the RPM band. The aluminum construction with tumble-polished finish resists corrosion while delivering the refined appearance expected in professional engine compartments. At 9.3 pounds, the carburetor maintains structural integrity without excess weight, critical for applications where every pound counts in overall vehicle balance and performance metrics.

This carburetor suits builders and operators assembling carbureted engine platforms for trucks, hot rods, marine powerplants, and off-road powertrains where electronic fuel injection is not required or preferred. The double-pumper design ensures consistent cold-start enrichment and smooth transition through cruise and acceleration phases, eliminating hesitation and stumble during load changes. Mechanics and engine tuners select the 4150 series for its proven track record of repeatable tuning characteristics and wide availability of performance calibration data within the performance community.

The 600 CFM rating positions this unit in the practical middle ground for mid-sized displacement engines—adequate for naturally aspirated street engines while remaining responsive and efficient at lower throttle positions. Its square bore design ensures compatibility with standard intake manifold pads across the broadest range of engine families, reducing fitment complexity for retrofit and custom build applications.