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Airaid Intakes

AIR 400-590

1997-2003 Ford F-150 / 1997-2004 Expedition 4.6L PowerAid TB Spacer by Airaid (400-590)

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PowerAid®; Throttle Body Spacer; Installs In 30-45 Minutes; Developed to enhance off-idle torque from 800 rpm to approximately 3,000 rpm, PowerAid®’s unique, patented Helix Bore design spins the incoming air charge as it passes through the throttle body spacer. This spinning action boosts the velocity of the incoming air and contributes to better atomization of the air/fuel mixture as the air charge enters the combustion chamber. The end result is more part-throttle torque, improved mid-range power, and overall combustion efficiency for better fuel economy.Click the E.O. number (D-609) to find out if your application is listed. If your application is not listed then your intake system is not legal for sale or use in California and some other states.Fits:FORD EXPEDITION 1997-2004 V8 4.6LFORD F-150 1997-2003 V8 4.6LFORD F-150 Heritage 2004-2004 V8 4.6L

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