Description
The ARB Air Locker Differential for Ford 10.25" & 10.5" Sterling Axles (model arbRD140) is the world’s premier traction aid designed to keep you moving through the toughest terrain and most challenging conditions. With a simple switch activation, this air locker provides instant and reliable locking, allowing you to tackle mud, rocks, snow, and uneven ground with confidence.
The core advantage of the ARB Air Locker is its pneumatically operated locking system inside the differential. When engaged, it prevents the internal differential gears from rotating independently, forcing both axle shafts to turn together in sync with the ring gear. This delivers 100% traction on demand, maximizing grip without compromising on-road drivability or causing driveline wear. When disengaged, it functions as a conventional open differential, ensuring smooth and safe driving on pavement.
Built for durability and reliability, the Air Locker features a rugged two-piece steel design with minimal moving parts for maximum strength. It includes a patented timed locking mechanism for high strength and ultra-fast unlocking, plus a steel-reinforced, elastomer bonded annular seal engineered to withstand extreme temperatures worldwide. The kit contains the Air Locker differential, activation switch, solenoid valve, airline, and bulkhead fitting. (Note: Air compressor required, sold separately.)
Fitment Information:
- Axle Type: Sterling 10.25" to 10.5" Full Float
- Position: Rear
- Shaft Diameter: 1.50 inches
- Spline Count: 35
- Gear Ratio: All ratios supported
Compatible Vehicles:
-
Ford F-250 Super Duty (2011–2016) and F-350 Super Duty (2011–2016)
Engines: 6.2L V8 Flex Fuel, 6.7L V8 Diesel, 6.7L V8 Diesel Base (2015–2016)
Submodels: Base, Platinum, King Ranch, Lariat, XL, XLT
Drivetrain: 2WD and 4WD -
Ford E-Series E-150, E-250, E-350 (2009–2015)
Engines: 4.6L V8 Flex Fuel, 5.4L V8 Flex Fuel, 5.4L V8 Gas, 6.8L V10 Gas, CNG, LPG, Diesel
Submodels: Base, XL, XLT
Drivetrain: 0WD, 2WD, 3WD (varies by model/year) -
Ford F-250 and F-350 Super Duty Cabela’s Editions (2009–2010)
Engines: 5.4L V8 Gas, 6.4L V8 Diesel, 6.8L V10 Gas -
Ford F-250 Super Duty Harley-Davidson Edition (2009)
Engine: 6.8L V10 Gas -
Supports 8-cylinder engines and various fuel types including Gasoline, Diesel, Flex Fuel, Compressed Natural Gas (CNG), and Liquefied Petroleum Gas (LPG).
This ARB Air Locker is built to fit a wide range of Ford heavy-duty trucks and vans equipped with Sterling 10.25" or 10.5" rear axles, delivering reliable traction enhancement for both on- and off-road performance.
