AIRAID 400-591 Throttle Body Spacer

T.B. SPACER; FORD F150/EXPEDITION, 5.4L, 1997-2003
The AIRAID Throttle Body Spacer is designed to enhance off-idle torque from 800 rpm to approximately 3,000 rpm. The spacer utilizes it's unique, patented Helix Bore design to spin the incoming air charge as it passes through the throttle body spacer. The spinning air 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 and improved mid-range power.

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T.B. SPACER; FORD F150/EXPEDITION, 4.6L, 1997-2003

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AIRAID 400-591 AIRAID Throttle Body Spacer

The spacer utilizes it's unique, patented Helix Bore. Airaid part number 400-591. Product Style AIRAID PowerAid. The spinning air action boosts the

Airaid 400-591 Throttle Body Spacer 1997-2003 Ford F-150, 1997-04 Expediton 5.4L

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