ARB Air Locker Ford 10.25 Sterling on a white background
ARB Air Locker Ford 10.5 Sterling on a white background
Ford Sterling selectable air locker exploded diagram on a white background
35 spline Sterling rear air locker on a white background
Off-road Ford 10.25 traction locker components on a white background
Photo - Primary

ARB Ford Sterling 10.25"/10.5" Selectable Air Locker - 35 Spline

ARBRD140

Regular price$1,399.95
/
Shipping calculated at checkout.

The ARB Air Locker Differential for Ford 10.25" and 10.5" Sterling rear axles allows drivers to move slower, safer, and with greater control while reducing drivetrain shock, vehicle damage, and environmental impact.

With the flip of a switch, the Air Locker instantly locks the differential, preventing internal gears from rotating independently. This forces both axle shafts to turn together, ensuring maximum traction in mud, rocks, snow, and extreme off-road conditions. When disengaged, the differential operates like a conventional open unit for smooth, predictable on-road performance.

Kit Includes:

  • ARB Ford Sterling 10.25"/10.5" Air Locker Differential
  • Dash activation switch
  • Solenoid valve
  • Air line
  • Bulkhead fitting
  • Note: Air compressor required for operation (sold separately).

Specifications
  • Differential Type: Selectable Air Locker
  • Axle Type: Ford Corporate Sterling 10.25" / 10.5"
  • Position: Rear
  • Spline Count: 35
  • Shaft Diameter: 1.50"
  • Gear Ratio Compatibility: All ratios
  • Material: Steel
  • Design: Two-piece carrier
  • Activation: Pneumatic (air-operated)

Fitment
Make Model Year Range
Ford E-150 2003–2010
Ford E-150 Club Wagon 2000–2005
Ford E-150 Econoline 2000–2002
Ford E-150 Econoline Club Wagon 2000–2002
Ford E-250 2003–2014
Ford E-250 Econoline 1997–2002
Ford E-350 Club Wagon 2003–2005
Ford E-350 Econoline 1997–1998
Ford E-350 Econoline Club Wagon 1997–2002
Ford E-350 Super Duty 1999–2015
Ford Excursion 2000–2005
Ford F-250 1997–1999
Ford F-250 HD 1997
Ford F-250 Super Duty 1999–2016
Ford F-350 1997
Ford F-350 Super Duty 1999–2016
  • Note: Fits Ford 10.25" and 10.5" Corporate Sterling rear axles equipped with 35-spline shafts.
  • Axle Identification Tip: Ford 10.25" and 10.5" Corporate Sterling axles can be identified by the absence of a filler hole in the OE inspection cover.

Tech Insight

ARB’s patented timed locking mechanism provides ultra-fast disengagement under load, minimizing driveline stress while maintaining exceptional strength. The two-piece carrier design reduces internal moving parts for increased reliability under high torque and heavy vehicle loads. A steel reinforced, elastomer bonded annular seal ensures dependable operation across extreme temperatures and harsh environments.

Selectable control means traction only when you need it with no compromise on the street, maximum confidence off-road.



Recently viewed