*item may differ from images
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.
AIRAID Fuel Injection Throttle Body Spacer 400-591
Specifications:
| CARB EO Number | D-609 |
| Finish | Black |
| Gaskets Included | Yes |
| Material Used | Aluminum |
| Mounting Hardware Included | Yes |
| Package Material | Plastic Other |
| Package Type | Blisterpack |
| Product Style | AIRAID PowerAid |
| Prop 65 (C, R or CR) | CR |
| Prop 65 - Short Label | WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov |
| Prop 65 Warning Label | https://www.knfilters.com/images/l/prop65.jpg |
| Prop 65 Yes/No | Yes |
| Spacer Type | 4-Barrel Open |
| Street Legal In All US States | Not legal for sale or use in California on any pollution controlled motor vehicle. NOTE: Some specific models and years may be legal in CA. Check the CARB status on your parts at knfilters.com. |
| Thickness | 1 in (25 mm) |
| Title | AIRAID AIR-400-591 AIRAID Throttle Body Spacer |
| TUV Approved (Europe) | No |
| Warranty | 12 Months - 24,000 Miles |
| Weight | 1.1 lb (0.5 kg) |
| Description_DES | AIRAID Throttle Body Spacer |
| Description_INV | AIRAID Throttle Body Spacer |
| Description_SHO | Throttle Body |
| Description_EXT | The AIRAID Throttle Body Spacer is designed to enhance mid-range torque using a patented Helix Bore which spins intake air going through the throttle body spacer. Includes mounting hardware. |
| Description_MKT | 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. |
| Description_FAB | Made from aircraft quality billet 6061-T6 aluminum |
| Description_FAB | Improves low end torque and throttle response |
| Description_FAB | Gaskets, hardware and precision brackets are included |
| Description_FAB | Installs in less than 1 hour |
| Description_FAB | No drilling or cutting required |
| Description_FAB | Provides stronger mid-range power |
| Description_DEF | Fuel Injection Throttle Body Spacer |
This Part Fits:
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 1997 | Ford | Expedition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 1998 | Ford | Expedition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 1999 | Ford | Expedition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 2000 | Ford | Expedition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 2001 | Ford | Expedition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 2002 | Ford | Expedition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 2003 | Ford | Expedition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 2004 | Ford | Expedition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 1997 | Ford | F-150 | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 1998 | Ford | F-150 | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer | |
| 1999 | Ford | F-150 | Base | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2000 | Ford | F-150 | Base | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2000 | Ford | F-150 | Harley-Davidson Edition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2001 | Ford | F-150 | Harley-Davidson Edition | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2001 | Ford | F-150 | King Ranch | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2002 | Ford | F-150 | King Ranch | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2003 | Ford | F-150 | King Ranch | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 1999 | Ford | F-150 | Lariat | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2000 | Ford | F-150 | Lariat | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2001 | Ford | F-150 | Lariat | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2002 | Ford | F-150 | Lariat | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2003 | Ford | F-150 | Lariat | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 1999 | Ford | F-150 | XL | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2000 | Ford | F-150 | XL | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2001 | Ford | F-150 | XL | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2002 | Ford | F-150 | XL | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2003 | Ford | F-150 | XL | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 1999 | Ford | F-150 | XLT | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2000 | Ford | F-150 | XLT | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2001 | Ford | F-150 | XLT | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2002 | Ford | F-150 | XLT | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2003 | Ford | F-150 | XLT | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer,California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2004 | Ford | F-150 Heritage | XL | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 2004 | Ford | F-150 Heritage | XLT | California Air Resources Board Exempt: Yes; CARB EO: D-609; Airaid Throttle Body Spacer |
| 1998 | Lincoln | Navigator | California Air Resources Board Exempt: No; Airaid Throttle Body Spacer,California Air Resources Board Exempt: No; Airaid Throttle Body Spacer | |
| 1999 | Lincoln | Navigator | California Air Resources Board Exempt: No; Airaid Throttle Body Spacer,California Air Resources Board Exempt: No; Airaid Throttle Body Spacer |