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Integrated Front Air Suspension and Steer Axle System

Save up to 97 pounds with AIRTEK. With a unique design that provides increased stability, improved ride and comfort, and reduced maintenance, AIRTEK is the industry’s first front air suspension and steer axle system. Combined with Hendrickson’s STEERTEK NXT axle, AIRTEK can offer up to 97 pounds of weight savings over standard suspensions for applications rated between 12,000 – 14,000 pounds.


Sales Literature

Parts Lists


17730-243 AIRTEK/ STEERTEK NXT-Freightliner, Western Star and Sterling Tech Procedure REV E06/129M 17730-247 AIRTEK - Volvo Tech ProcedureREV G07/127.5Mb 17730-250 AIRTEK - Mack Tech ProcedureREV D07/127.3MB 17730-252 SOFTEK/AIRTEK/STEERTEK International Tech ProcedureREV F07/1210.3 Mb 17730-236 AIRTEK Freightliner Vehicles Pre-delivery Inspection and Preventive MaintenanceREV B12/13294kb SEU-0102 STEERTEK NXT/STEERTEK Axle Technical Bulletin Towing ProcedureREV C09/11346 KB SEU-0211 AIRTEK Technical Bulletin New Height Adjustment ProcedureREV A01/02111 KB SEU-0215 AIRTEK Bulletin-Freightliner/Sterling/Western Star VehiclesREV A07/04120k SEU-0220 AIRTEK Bulletin-Volvo Dual Height Control ValvesREV A04/05209k SEU-0223 STEERTEK NXT/STEERTEK/IFS Technical Bulletin Tie RodsREV D03/15205kb SEU-0224 AIRTEK Technical Bulletin-Mack Dual Height Control ValvesREV A02/06195k SEU-0226 AIRTEK Technical Bulletin for Volvo HCV and Air Spring AssemblyREV A08/06245k SEU-0227 STEERTEK Bulletin-Unauthorized Axle Camber ModificationsREV A06/11263kb 59310-011 Kingpin Bushing Service Kit Assembly InstructionsREV D09/13416 KB 59310-017 AIRTEK-Thrust Bearing Service Kit Assembly InstructionsREV B09/08152 KB 59310-026 AIRTEK for Volvo Dual HCV Ass'y InstructionsREV A01/06523k 59310-030 AIRTEK-Mack Dual HCV Assembly InstructionsREV A04/06445k 59310-034 AIRTEK Freightliner and Sterling Dual HCV Assembly InstructionsREV C07/09345k 59310-044 AIRTEK for Volvo Vehicles Equipped with U-bolt Clamp Group - Steering Stabilizer Kits REV B04/10215k 59310-053 AIRTEK Assembly Inst. for International Vehicles Equipped - Steering Stabilizer Kits REV A08/11423k 59310-065 AIRTEK for Freightliner Vehicles built prior to May 2016REV B04/17592kB 59310-066 Steering Stabilizer Kit AIRTEK for Volvo VehcilesREV A05/17394kB

Driver Comfort

  • Air springs support the majority of the vehicle load while providing low spring rate and extremely soft ride.
  • Premium shock absorbers are tuned specifically for AIRTEK.

Stability and Handling

  • Integrated design allows optimized steering geometry for reduced bump steer and wheel kick.
  • The rigid front leaf spring attaches securely to the box section axle, forming a torsion system for enhanced roll stability.
  • AIRTEK and STEERTEK NXT deliver up to 50° wheel cut for improved maneuverability.
  • Height control valve maintains constant ride height.


  • AIRTEK offers up to 97 lbs. of weight savings when compared to a traditional forged axle and steel spring.

Maintenance and Durability

  • Premium kingpin bushings and seals provide enhanced protection from the elements to improve bushing life.
  • Maintenance-free bushings and the two-piece knuckle reduce overall system maintenance.
  • Air springs reduce vibration to cab, chassis, and engine components.
  • Available OEM unitized hubs for extended wheel bearing life.

Brake Compatibility

  • Compatible with drum or disc brakes.
  • Accepts both 5/8" and 3/4" brake hardware.