ARB Air Locker Dana 70 high speed components arranged on a white background
ARB Air Locker Dana 80 high speed component on a white background
Dana 80 selectable locker 35 spline parts on a white background
Collection of Dana 70 air locker high speed components on a white background
Close-up of ARB locking differential heavy duty in use.
ARB Dana 70/80 Selectable Air Locker - High Speed, 35 Spline
ARB Air Locker Dana 70 high speed components arranged on a white background
ARB Air Locker Dana 80 high speed component on a white background
Dana 80 selectable locker 35 spline parts on a white background
Collection of Dana 70 air locker high speed components on a white background
Close-up of ARB locking differential heavy duty in use.
ARB Dana 70/80 Selectable Air Locker - High Speed, 35 Spline

ARB Dana 70/80 Selectable Air Locker - High Speed, 35 Spline

ARBRD173

$1,499.95
/
Shipping calculated at checkout.

The ARB Dana 70/80 Air Locker is engineered for applications running numerically lower gear ratios, making it ideal for heavy duty tow rigs, expedition vehicles, and mixed use off-road builds.

With the flip of a dash mounted switch, compressed air activates the pneumatically operated locking mechanism inside the differential, preventing the axle shafts from rotating independently. This fully locks both wheels to the ring gear for maximum traction when needed. When disengaged, the differential operates like a standard open unit, allowing smooth handling, reduced driveline wear, and safer operation.

  • Includes:
  • ARB Dana 70 & Dana 80Air Locker differential
  • 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: 35-spline
  • Shaft Diameter: 1.50
  • Material: Steel
  • Finish / Color: Silver
  • Activation: Pneumatic (air operated)
Fitment
Make Model Year Range
Chevrolet C3500 1992–2000
Chevrolet G30 1996
Chevrolet K3500 1992–2000
Dodge B350 1993–1994
Dodge B3500 1995–1998
Dodge Ram 2500 1994–2002
Dodge Ram 3500 1994–2002
Ford E-350 Club Wagon 2003–2005
Ford E-350 Econoline 1992–1998
Ford E-350 Econoline Club Wagon 1992–2002
Ford E-350 Super Duty 1999–2010
Ford F-350 1993–1997
Ford F-350 Super Duty 1999–2016
GMC C3500 1992–2000
GMC K3500 1992–2000

Important Note: For Dana 80 applications, the Air Locker flange holes must be drilled or reamed to accept 9/16" bolts. Always consult your gear supplier to confirm correct application.

Tech Insight

ARB’s patented locking system supports the side gear teeth directly, providing increased torque handling exactly when needed. The two-piece design minimizes moving parts while maximizing strength and reliability. A steel reinforced, elastomer bonded annular seal has been proven to withstand 20,000+ engagement cycles in extreme climates.

The high speed Air Locker is optimized for lower numerical gear ratios, making it a strong choice for highway driven rigs that still demand dependable off-road traction.

Key Design Features:

  • Bonded Annular Seal – Steel reinforced for extreme temperature durability
  • Flange Cap Assembly – Billet-machined alloy steel spider block
  • Splined Side Gears – Forged nickel alloy steel with surface treatments
  • Wave Spring System – Up to 12 return springs for fast, positive disengagement
  • Clutch Gear Design – Patented timed locking for superior torque transfer
  • Long Cross Shaft – High-pressure running fit for extreme abuse

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