Air Lift 25490 SmartAir II Single Automatic Leveling System

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Fits Air Lift Helper Springs - Control 2 Springs Together

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 vehicle’s 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.

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