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AIRAID POWERAID throttle body spacer for Holley 4150/4160 and compatible square-flange 4BBL carburetors, engineered to enhance off-idle torque from roughly 800–3,000 rpm. Its patented Helix Bore design spins intake air to boost velocity and improve atomization of the air/fuel mixture, yielding stronger part-throttle torque and improved mid-range power. The spacer is a true bolt-on upgrade with included mounting hardware and requires no drilling or cutting.
Airaid Holley 4150/4160 Series/ Edelbrock Sq. Flange/ OE Sq. Flange 4BBL PowerAid TB Spacer
