Airaid Throttle Body Spacer - Expedition 4.6L / 5.4L 2000-2004 | GBP Performance
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Airaid

Airaid | Throttle Body Spacer - Expedition 4.6L / 5.4L 2000-2004

400-591
Airaid 400-591 | Throttle Body Spacer for Ford Expedition V8 4.6L & V8 5.4L. Patented Helix Bore design in 6061-T6 aluminum. Boosts mid-range torque. CARB EO D-609.
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Airaid – Throttle Body Spacer

Description

The AIRAID 400-591 Throttle Body Spacer is designed to enhance off-idle torque from 800 rpm to approximately 3,000 rpm on your Ford Expedition. The spacer utilizes its unique, patented Helix Bore 4-Barrel Open design to spin the incoming air charge as it passes through the throttle body spacer. This spinning action boosts the velocity of incoming air and contributes to better atomization of the air/fuel mixture in the combustion chamber. The end result is more part-throttle torque and improved mid-range power. Machined from aircraft-quality billet 6061-T6 aluminum with a red anodized finish, this 25 mm thick spacer installs in less than one hour with no drilling or cutting required. Gaskets, hardware, and brackets are all included. This product is CARB EO D-609 certified and street legal for on-road use.

Specifications

  • Brand: Airaid
  • Part Number: 400-591
  • Compatibility: Ford Expedition V8 4.6L and V8 5.4L (See Application Section)
  • Type: 4-Barrel Open Throttle Body Spacer with patented Helix Bore design
  • Material: Aircraft-quality billet 6061-T6 aluminum, red anodized finish
  • Thickness: 25 mm (1 in.)
  • Installs in less than one hour, no drilling or cutting required
  • Gaskets, hardware, and brackets included
  • CARB EO D-609 certified, street legal
  • Improves low-end torque and throttle response
  • New
  • Sold and shipped by GBP Performance

 

Note:

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Compatibility (Application)

MakeModelYearsEngineNotes
FordExpedition2000-2004V8 4.6LCARB EO D-609
FordExpedition2000-2004V8 5.4LCARB EO D-609
Airaid
400-591
642046405915

Data sheet

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