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USD 361.02
Part #: AIR25490

Air Lift 25490 SmartAir II Single Automatic Leveling System

Fits Air Lift Helper Springs - Control 2 Springs Together
Part #: AIR25490
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The Air Lift 25490 SmartAir II Single Automatic Leveling System automatically levels your leaf-spring vehicle with a unique non-contact magnetic height sensor, which allows the system to intelligently determine whether the air springs should be inflated or deflated. 

Increased Convenience:
Eliminate the need to search for gas stations with a working air compressor. SmartAir II automatically detects changes in the vehicles load and will make adjustments to the air springs as needed.

Easy Installation
SmartAir II is easy to install with the included wiring harness. No air line or wiring needs to be routed into the cab of the vehicle which eliminates drilling into the firewall. Typical installation should only take a few hours.


  • Easy Installation
  • OEM Grade Components 
  • Weather-Resistant Materials 
  • Pre-Assembled Wiring Harness 
  • Responsive & Accurate Within 1/16"
  • 100 PSI 0.92 CFM 15% Duty Cycle 12V Compact Air Compressor 
Note: Will not work with coil sprung vehicles, or Air Lift 1000 Adjustable Air Helper Springs.


  • MFG. Number 25490
  • Manufacturer Name Air Lift
  • Shipping Weight 8.00 lb.
  • Shipping Length 10 in.
  • Shipping Width 14 in.
  • Shipping Height 9 in.
  • Fuel Type Diesel / Gas
  • UPC 729199254901
  • Warranty Yes
  • Warranty Info 2 Year Limited
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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Questions and Answers

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Most Popular Questions

Does this kit include a compressor, or is it only the electronics portion? This isnt really specified in the description, is this meant to be used in conjunction with a compressor/manual in cab levelling setup or is it self contained, requiring only the helper air bag kit?
View Staff Answer 
This kit includes a 100 PSI 0.92 CFM 15% duty cycle 12V compact Air Compressor
XDP continues to closely monitor the COVID-19 (Coronavirus) outbreak. As an integral part of the automotive supply chain, at this point all call centers and distribution centers remain fully operational to ensure we keep vital service components flowing to vehicles used in transport of goods and emergency response. To ensure the health of our employees, families, and customers, we have made the following procedural changes:

  • UPDATE: Effective 6/1 Customer Service resumes normal business hours of M-F 8:30 – 9:00pm EST.
  • Effective 3/18 we have decided to temporarily close both of our retail stores in NJ and NV.
  • Our technical sales team remains available Mon-Fri 8:30am-9pm and Saturday 10:30am-7pm EST.
  • All employees have been encouraged to follow the CDC's recommendations at home and in the workplace.
The circumstances of this virus are fast moving, as such, we will continue to update you with any further operational adjustments as needed. As always, we value your business and appreciate your patience as we manage this situation together.