ARB Air Locker AAM 9.25 components on a white background
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ARB AAM 9.25”/ GM 9.50” Selectable Air Locker - 33 Spline
ARB Air Locker AAM 9.25 components on a white background
ARB Air Locker for GM 9.5 and wiring on a white background.
Collection of GM 14 bolt semi float air locker parts on a white background
AAM 9.25 selectable locker on a white background
ARB 33 spline air locker on a white background
ARB AAM 9.25”/ GM 9.50” Selectable Air Locker - 33 Spline

ARB AAM 9.25”/ GM 9.50” Selectable Air Locker - 33 Spline

ARBRD197

$1,399.95
/
Shipping calculated at checkout.

The ARB AAM 9.25”/ GM 9.50” Air Locker is designed for applications running numerically lower gear ratios and mixed use vehicles that see both street and off-road duty. With the flick of a dash mounted switch, compressed air activates the pneumatically operated locking mechanism inside the differential, instantly locking both axle shafts to the ring gear. When disengaged, the differential operates like a conventional open unit, reducing driveline wear and preserving normal handling characteristics.

Includes:

  • ARB AAM 9.25” Front/ GM 9.50” Rear Air Locker 
  • Dash activation switch
  • Solenoid valve
  • Air line
  • Bulkhead fitting
  • Air compressor required for operation (sold separately).
Specifications
  • Brand: ARB
  • Differential Type: Selectable locking differential
  • Speed Rating: High Speed
  • Spline Count: 33-spline
  • Shaft Diameter: 1.37"
  • Material: Steel
  • Finish / Color: Silver
  • Activation Type: Pneumatic (air operated)
  • Rear Axle Applications
  • GM 14-Bolt Semi-Float 9.5"
  • 33-spline, 1.37" shaft
  • Gear ratio: 3.23 & up
  • Gear ratio: All (application dependent)
  • Front Axle Applications
  • AAM / GM 9.25" (IFS)
  • 33-spline, 1.37" shaft
  • Gear ratio: All
Fitment
Make Model Year Range
Chevrolet C1500 1994–1999
Chevrolet C1500 Suburban 1992–1999
Chevrolet C2500 1992–2000
Chevrolet C2500 Suburban 1992–1999
Chevrolet K1500 1994–1999
Chevrolet K1500 Suburban 1992–1999
Chevrolet K2500 1994–2000
Chevrolet K2500 Suburban 1992–1999
Dodge Ram 2500 2003–2010
Dodge Ram 3500 2003–2007
GMC C1500 1994–1999
GMC C1500 Suburban 1992–1999
GMC C2500 1992–2000
GMC C2500 Suburban 1992–1999
GMC K1500 1993–1999
GMC K1500 Suburban 1992–1999
GMC K2500 1992–2000
GMC K2500 Suburban 1992–1999
Hummer H2 2003–2009
Ram 2500 2011–2019
Ram 3500 2011–2019
Tech Insight

ARB’s patented timed locking mechanism supports the side gear teeth directly, allowing the Air Locker to handle high torque loads exactly when needed. The steel reinforced, elastomer bonded annular seal is designed to withstand extreme temperatures and repeated engagement cycles, ensuring long term reliability in both daily driven and off-road applications.

The high speed configuration is ideal for vehicles that require selectable traction without sacrificing street manners.

Installation Guide