Overview
The AIRAID PowerAid Throttle Body Spacer with part number 400-590 is a billet aluminum throttle body spacer with an anodized finish, built to sharpen throttle response and add low-end torque. The brand also names mid-range power and fuel efficiency as goals of the design.
The spacer is a bolt-on part with simple installation. No vehicle applications are named for it, so confirm fit for your vehicle’s year, model and trim before ordering.
Key features
- Billet aluminum build, described by the brand as aircraft quality
- Anodized finish
- Aimed at low-end torque and throttle response
- Targets mid-range power and fuel efficiency
- Bolt-on installation
- 50 State Carb Approved
- Made in the U.S.A.
Choosing and fitting a spacer
A throttle body spacer sits between the throttle body and the intake manifold, moving the throttle body away from the intake so the airflow path changes. Because air enters the throttle body at a different distance and angle, the effect is usually felt most in throttle response at part throttle. Results vary with the engine, the rest of the intake and the tune, so a spacer works best as one part of a set of matched changes.
Before fitting, inspect the mating surfaces on the throttle body and intake for flatness and clean sealing faces. Gaskets and fasteners may need attention when a spacer is added, and stock bolts can be too short for the extra thickness. Recheck idle and listen for vacuum leaks after installation, and retighten the fasteners after the first few heat cycles.
- Measure stock bolt length against the spacer thickness
- Clean both sealing surfaces before assembly
- Check for vacuum leaks at the new joints
- Recheck idle and throttle position after the first drive
Specifications
| Brand | AIRAID |
|---|---|
| Part number | 400-590 |
| UPC | 642046405908 |
| Base material | Aluminum (billet) |
| Finish | Anodized |
| Fitment type | Direct fit (vehicles not listed) |
| Emissions | 50 State Carb Approved |
| Origin | Made in the U.S.A. |
| Warranty | No-Hassle warranty (terms not stated) |
Vehicle fitment
Make, model and year fitment is not confirmed for part 400-590. Confirm the application for your engine and throttle body before installing the spacer.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The brand calls installation easy and bolt-on. Since no vehicles are named, verify the application match before fitting the spacer to your throttle body.
What’s included
Included hardware is not confirmed. Check the package contents against your installation before starting.
