ARB Air Locker for Dana 70 arranged on a white background
ARB Air Locker Dana 80 on a white background
Dana 80 selectable locker components on a white background
Dana 70 air locker 35 spline on a white background
ARB locking differential heavy duty arranged on a white background
ARB Air Locker for Dana 70 arranged on a white background
ARB Air Locker Dana 80 on a white background
Dana 80 selectable locker components on a white background
Dana 70 air locker 35 spline on a white background
ARB locking differential heavy duty arranged on a white background

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

SKU: ARBRD172

$1,499.95
/
Shipping calculated at checkout.

The ARB Air Locker is the world’s premier selectable traction device, delivering 100% traction on demand while maintaining smooth, predictable on-road behavior when unlocked. Designed for extreme off-road, towing, and heavy-duty applications, this Air Locker allows instant engagement at the flip of a switch, giving you complete control in challenging terrain.

Using a pneumatically actuated locking mechanism, the Air Locker completely locks the differential when engaged, preventing axle shafts from turning independently and ensuring maximum traction. When disengaged, it functions like a standard open differential—allowing normal street manners, reduced driveline wear, and safer handling.

This low-speed Air Locker is built with ARB’s ultra-strong two-piece design and minimal moving parts for maximum reliability in the harshest environments.

Note: For Dana 80 applications, the Air Locker flange holes must be drilled or reamed to suit 9/16 bolts. Consult your gear supplier to confirm proper application.

Specifications
  • Brand: ARB
  • Differential Type: Selectable locking differential
  • Spline Count: 35 spline
  • Shaft Diameter: 1.50
  • Material: Steel
  • Finish / Color: Silver
  • Activation Type: Pneumatic (air operated)
  • Operating Mode: Locking when engaged, open when disengaged
  • Includes
  • ARB Air Locker differential
  • Dash activation switch
  • Solenoid valve
  • Air line
  • Bulkhead fitting
  • Air compressor required for operation (sold separately).
Fitment
  • Rear Axle Applications
  • Dana 70 Full Float – 10.5
  • 35 spline, 1.50 shaft
  • Gear ratio: 4.56 & up
  • Dana 80 Full Float – 11.5
  • 35 spline, 1.50 shaft
  • Gear ratio: 4.10 & up
  • Dana 80 Full Float – 11.5
  • 37 spline, 1.50 shaft
  • Gear ratio: 4.10 & up
  • Front Axle Applications
  • Dana 70
  • 35 spline, 1.50 shaft
  • Gear ratio: 4.56 & up
Tech Insight

Unlike automatic lockers, the ARB Air Locker only locks when commanded, allowing drivers to maintain steering control, reduce driveline stress, and avoid unnecessary wear. The patented timed locking system delivers rapid engagement and smooth disengagement, while the steel reinforced annular seal ensures reliable operation across extreme temperatures and conditions.

This makes the ARB Air Locker ideal for heavy duty off-road rigs, tow vehicles, rock crawlers, and expedition builds where control and durability matter.

Technical Resources

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