Air Suspension category referenceSpecial order · Estimated lead time: typically 2-4 weeks
02-04 Subaru Impreza WRX STI - Airtech Basic Air Suspension
Choose year, make and model to confirm this application-specific product fits — you can add it to your cart either way.
Verify fitment- Four application-specific air struts with 36-way damping and adjustable lower mounts
- Viair 444C compressor
- 5-gallon black steel air tank
- Manual paddle valves and a dual-needle 200 psi front/rear gauge
- All hoses, wiring and installation manuals
- Damping adjustment knob
- Ships from Mesa, AZ
- 12-month limited warranty
- Special order: typically 2-4 weeks
Specifications — CSB040-ABA
Product details
Air suspension on a 2002 to 2004 Subaru Impreza WRX STI means you can sit low at a meet and still clear a driveway on the way home. The Airtech Basic system is the entry management level: manual paddle valves control the front and rear bags, and a dual-needle 200 psi gauge mounted beside them keeps pressure visible at all times. Four vehicle-matched struts carry 36-way damping and adjustable lower mounts, so ride height can be fine-tuned at any pressure.
A single Viair 444C compressor and a 5-gallon black steel tank handle the lifting, and the page puts the Basic raise time at 4–7 seconds. The kit also includes hoses, wiring, installation manuals and a damping knob. If you want electronic switches, an OLED remote or auto-leveling, those are separate part numbers compared on the Air Suspension page. Installation is bolt-on with professional help recommended, and the system should be rechecked after 500 miles or one month. Confirm this body, listed as GC8, with the fitment checker first.
Supported features
36 levels of damping adjustment let you dial in the air struts. Insert the included damping knob and turn softer (counterclockwise) or stiffer (clockwise).
Air bags are engineered to match the vehicle. Sleeve-type and double-bellow bags are used depending on the OEM suspension design.
Like KSport coilovers, the struts allow fine-tuning of ride height at any pressure through an adjustable lower mount.
Chosen for reliability and performance; the single 444C can raise the car from lowest to maximum height in as little as four seconds. Airtech Basic and Deluxe raise in 4–7 seconds; Pro Plus and Executive raise faster, in 2–5 seconds.
Paddle valves control front and rear bags; the dual-needle gauge mounts beside the switches so pressure is always visible.
Camber-adjustable top mounts can be added on certain MacPherson-strut applications.
Compatible applications (2)
Choices for this system
Basic (paddle valves and gauge), Deluxe (electronic switches and remote), Pro Plus (OLED remote, four-corner control) and Executive (adds height sensors and auto-leveling) are separate part numbers for this vehicle; compare them on the Air Suspension page.
Available on certain MacPherson-strut applications; ask a technician whether they apply to this vehicle.
Installation
Bolt-on struts with supplied hoses, wiring and manuals; professional installation is recommended. Recheck the system after the first 500 miles or one month; to check for leaks, inflate to 70 psi and spray each fitting with soapy water.
Air suspension setup and careWarranty & service
12-month limited warranty to the original purchaser against defects in materials and workmanship. Racing use, exterior finish and improperly installed or modified parts are not covered; keep your original invoice for any claim.
Warranty terms and service requestsOther published pages for MPN CSB040-ABA
These page names share this MPN; they do not confirm fitment. Verify your vehicle before ordering.