Dominator HP #57 Air Bleed

The Dominator HP #57 Air Bleed from Holley is a precision carburetor component engineered for tuners, engine builders, and performance enthusiasts who demand exact fuel-air mixture control. These brass air bleeds are the foundation of carburetor jetting—they regulate the flow of air into fuel circuits, directly influencing idle quality, low-end response, and overall engine drivability. Set of 10 provides multiple tuning options for single or multi-carburetor applications, making this an essential consumable for anyone serious about carburetor calibration and engine optimization.

Machined from high-grade brass, the Dominator HP #57 Air Bleed features a 0.057-inch inside diameter orifice—the #57 designation—that delivers precise metering of air into the fuel circuit at critical engine speeds. Brass construction resists corrosion and provides durability across extended tuning sessions and seasonal storage. The tight machining tolerances ensure consistent flow characteristics across the set of 10, critical for maintaining repeatable jetting curves and preventing lean or rich conditions that degrade performance and engine longevity. Installation requires no special tools—simply press or screw into the carburetor body's designated air bleed port.

Carburetor tuners, vintage and modern hot rod builders, and performance engine shops rely on Holley air bleeds to fine-tune Holley carburetors across a wide range of cubic inches and intended applications. The #57 size sits in the middle of Holley's bleed range, making it suitable for stock-displacement engines through moderate stroker applications. Having a complete set of 10 eliminates mid-project delays and allows rapid A/B testing of jetting scenarios. Verify your carburetor model accepts standard Holley air bleeds and confirm the bleed port size before ordering to ensure proper fitment and function.