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AIRAID Throttle Body Spacer Ford Mustang 1999-2004 4.6L V8 - 400-524

AIRAID AIR-400-524 Throttle Body Spacer

The AIRAID AIR-400-524 Throttle Body Spacer is engineered to boost your vehicle's off-idle torque, enhancing performance from 800 RPM to around 3,000 RPM. Its innovative Helix Bore design creates a swirling effect in the incoming air charge, which increases air velocity and improves the atomization of the air/fuel mixture as it enters the combustion chamber. This results in noticeable gains in part-throttle torque and mid-range power, making your driving experience more responsive and enjoyable.

Key Features

  • CARB EO Number: D-609-3
  • Color: Red
  • Finish: Anodized
  • Gaskets Included: Yes
  • Material: Aluminum
  • Mounting Hardware: Included
  • Package Material: Plastic Other
  • Package Type: Blisterpack
  • Product Style: AIRAID PowerAid
  • Prop 65 Warning: WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
  • Spacer Type: 4-Barrel Open
  • Street Legal: Yes, in all US states
  • Thickness: 1 in (25 mm)
  • Warranty: 12 Months - 24,000 Miles
  • Weight: 1.1 lb (0.5 kg)

Specifications

This throttle body spacer is compatible with vehicles equipped with a returnless fuel system and is CARB exempt, making it a great choice for those looking to enhance performance while staying compliant with regulations.

Fitment

The AIRAID AIR-400-524 is designed to fit a variety of applications, ensuring that you can easily integrate it into your vehicle's existing setup. Enjoy the benefits of improved torque and power without the hassle of extensive modifications.

Customer Insights

Users have reported a noticeable improvement in throttle response and acceleration after installing the AIRAID Throttle Body Spacer. Many appreciate the easy installation process and the quality of the materials used. It's a popular upgrade for those looking to optimize their vehicle's performance without compromising on reliability.

Notes:

This product is designed for vehicles with a returnless fuel system and is CARB EO exempt (D-609-3).

Note(s):

  • This air intake may be CARB restricted. Please check with your local laws and regulations.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Airaid Banner

Who is Airaid?

Airaid is an aftermarket company that manufactures air filters and air intake systems for various vehicles. Founded in 1997, their filters are designed to work in any kind of environment, may it be the sand dunes, mud bogs, snowy slopes, and other harsh terrains. 

Their filters are not just used for offroading purposes but at the race track as well. You can see it being used by various drag cars and track cars too. Over the years, Airaid has established itself as a company that provides top quality products and has since become a leader in its market segment.

Engines Need to Breathe Too

Like humans, your car engine needs to properly breathe as well. Imagine running with your nose clogged. Hard isn’t it? That goes the same for your engine. 

A clogged air intake system would not just hinder the engine but might cause some unnecessary damage as well. Airaid aims to provide a better solution to these by creating products that would help restrict airflow.

Continuous Research for Innovation

Airaid has always pushed itself to find better ways on how to improve an engine’s airflow. They have created products such as throttle body spacers that complements their high-performance air intake systems. 

Their own air filters dubbed Synthaflow and Synthamax are proven to be more efficient against its competitors. The company is committed to providing the best product that they have created a special team known as the H-PAS Development Team. This team focuses on High-Performance Air Systems.

Purchase Airaid at Vivid Racing

Don’t restrict your vehicle’s full potential and upgrade your vehicle’s air intake system with Airaid. Designed to perform, you know that you have a product that helps your vehicle’s performance. Visit Vivid Racing and check out the list suitable for your needs.





Araid has the following 4 available warranties:
  • AIRAID "NO-HASSLE" LIFETIME LIMITED WARRANTY
  • AIRAID 1-YEAR LIMITED WARRANTY
  • AIRAID 90-DAY LIMITED WARRANTY
  • AIRAID 12-MONTH / 24,000 MILE LIMITED WARRANTY

THIS LIMITED WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS, WHICH VARY FROM STATE TO STATE. THIS LIMITED WARRANTY CAN ALSO BE FOUND ONLINE AT www.airaid.com/warranty. WE LIMIT THE DURATION AND REMEDIES OF ALL IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO THE DURATION OF THIS EXPRESS LIMITED WARRANTY. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS.

For more information please Click Here

Installation Instructions

Click to view the Installation Instructions here

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Things
Sale price None
Wholesale price $125.94
Shipping Weight: 1.30
Length: 10
Width: 6
Height: 2
Product Added At Sunday 24 December, 2017
Product Modified At Friday 11 July, 2025
Imported By ETLOverride
Last Edited By Turn_API
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Emissions Info
Carb Approved Yes
Carb Number D-609-3
Epa Status Compliant
Prop65 Yes
Carb Required -
Vendors
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Vendor Inv Cost Retail Jobber MAP Core Updated
Turn 14 $106.73 $149.99 ? $157.99 ? 2025-07-11 10:02:50


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