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AIRAID Throttle Body Spacer

$149.99

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Model#400-591
ManufacturerAiraid

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AIRAID Throttle Body Spacer - Model 400-591

The AIRAID Throttle Body Spacer is engineered to boost your vehicle's off-idle torque, enhancing performance from 800 RPM up to about 3,000 RPM. With its innovative patented Helix Bore design, this spacer creates a swirling motion in the incoming air charge as it flows through, which increases air velocity and improves the atomization of the air/fuel mixture. The result? A noticeable increase in part-throttle torque and enhanced mid-range power that can make your driving experience more exhilarating.

This throttle body spacer not only promises improved performance but also comes with all the necessary mounting hardware, making installation a breeze.

Key Features

CARB EO Number: D-609
Color: Red
Finish: Anodized
Gaskets Included: Yes
Material: Aluminum
Mounting Hardware Included: Yes
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 in All US States: See Vehicle Applications
Thickness: 1 in (25 mm)
Warranty: 12 Months - 24,000 Miles
Weight: 1.1 lb (0.5 kg)

Fitment and Compatibility

The AIRAID Throttle Body Spacer is designed to fit a wide range of vehicles. Ensure compatibility with your specific model by consulting the vehicle applications list.

Customer Insights

Many users have reported a noticeable difference in throttle response and overall engine performance after installing the AIRAID Throttle Body Spacer. Enthusiasts appreciate the simple installation process and the immediate boost in mid-range power, making it a popular choice for those looking to enhance their driving experience.

Installation Notes

Installation of the AIRAID Throttle Body Spacer is straightforward, thanks to the included mounting hardware and gaskets. Most users can complete the installation in under an hour with basic tools.

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

Make Vehicle	Model	Year
1997-2004 Ford Expedition	Expedition	1997-2004
1997-2004 Ford F-150	F-150	1997-2004
1998-1999 Lincoln Navigator	Navigator	1998-1999

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.

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Installation Instructions

Click to view the Installation Instructions here

We're currently collecting product reviews for this item. In the meantime, here are some company reviews from our past customers sharing their overall shopping experience.

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Pat B. Verified Customer

03-30-25 - California, United States

Hard to find Parts 1976 Datsun 280Z. Glad to know you guys are out there

Recommend this Company

5 / 5

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David W. Verified Customer

03-30-25 - Massachusetts, United States

Great price

Recommend this Company

5 / 5

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Daniel M. Verified Customer

03-30-25 - NJ, United States

This was my first ever purchase of a performance part for my car and installed it by myself for the first time as well. The instructions were clear and concise. Thank you!

Recommend this Company

5 / 5

Delivery

5 / 5