ARB Air Locker

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With our improved two piece design available right across the range, along with the addition of forged gears and a five year warranty, ARB Air Lockers are now better built and better backed than ever before.
Price From: $857.71

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Many people believe that a 4x4 and traction go hand in can't have one without the other. However, your vehicle's standard (or open) differential is designed to allow each wheel to turn independently, thus eliminating binding during turns. While off road this becomes a major burden as engine power will take the path of least resistance, which occurs at the wheels with little or no traction. Newer vehicles with limited slip differentials may offer some improvement, but more often you'll find the slipping not 'limited' enough to maintain forward progress. Automatic locking differentials also have their disadvantages. Aside from being noisy when disengaging, they can also upset the on-highway driving characteristics of your vehicle.


Created to provide 100% traction on demand, without sacrificing any of your vehicle's highway driving performance, ARB Air Lockers employ a 12 volt ARB Air Compressor designed to activate (and deactivate) a solid and durable locking mechanism inside the differential. This gives you the traction you need, when you need it, all at the flip of a switch and all within the comfort of the driver's seat. The advantage of the ARB Air Locker lies in the pneumatically operated locking system inside the differential. When activated, the Air Locker prevents the differential gears from rotating and therefore prevents the axle shafts from turning independently of each other. With both wheels tied directly to the rotation of the ring gear, the vehicle maintains maximum possible traction at all times. When unlocked, it operates just like a conventional 'open' differential. In addition to providing outright improvements to a 4x4's off road capabilities, the Air Locker offers significant environmental benefits. An Air Locker equipped vehicle can be driven in a slower, safer and more controlled manner, greatly reducing the likelihood of vehicle damage and environmental impact.


ARB Air Lockers are currently available in over 100 configurations to suit a wide range of 4x4 vehicles from around the world and can be installed in both the front and rear axles. Installation should be performed by a qualified differential technician, although no special tools or skills are required apart from those necessary for fitting a standard differential. ARB also offers three compressor models suitable for Air Locker operation, two of which can be used to inflate tires and other equipment such as air tools.


Review by Kimberly Wilson
I love the locker, ARB always makes a good product and always works the way its supposed to. the only problem was this website if you get a guy named jeff mayfield cancel the order and go a different site he wasnt helpful at all and didnt email me back when he asked a question and then i would respond with my own question in there and he never got back to me thanks (Posted on 3/2/2014)
Review by Jay Wells
I mounted these lights on the front of my ATV using a wiring harness directly to the battery. These lights are the best I have ever used on my atv. I measured a visible object in the trail at 9/10 of a mile. (Posted on 3/2/2014)

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Part SKUs

Name Axle Model Gear Ratio (numerically) Splines Part Number Price
Dana 30 ARB Air Locker (3.73 & Up) Dana 30 3.73 & Up 27 Spline ARB-RD100 $996.04
Dana 30 ARB Air Locker (3.54 & Down) Dana 30 3.54 & Down 27 Spline ARB-RD101 $922.26
Dana 44 ARB Air Locker (3.92 & Up) Dana 44 3.92 & Up 30 Spline ARB-RD116 $996.04
Dana 44 ARB Air Locker (3.73 & Down) Dana 44 3.73 & Down 30 Spline ARB-RD117 $996.04
Dana 35 ARB Air Locker (3.31 & Down) Dana 35 3.31 & Down 27 Spline ARB-RD103 $996.04
Dana 35 ARB Air Locker (3.54 & Up) Dana 35 3.54 & Up 27 Spline ARB-RD102 $857.71
Dana 60 35 Spline Full Float ARB Air Locker (4.56 & Up) Dana 60 4.56 & Up 35 Spline - Full Float ARB-RD166 $1,106.84
Dana 60 30 Spline ARB Air Locker (4.10 & Down) Dana 60 4.10 & Down 30 Spline ARB-RD22 $1,075.29
Dana 60 35 Spline Semi Float ARB Air Locker (4.56 & Up) Dana 60 4.56 & Up 35 Spline - Semi Float ARB-RD42 $1,075.29
Dana 60 35 Spline Semi Float ARB Air Locker (4.10 & Down) Dana 60 4.10 & Down 35 Spline - Semi Float ARB-RD43 $1,075.29
AMC 20 ARB Air Locker (2.73 & Down) Hummer H1 AMC 20 2.73 & Down 29 Spline ARB-RD47 $1,075.29
Dana 60 35 Spline Full Float ARB Air Locker (4.10 & Down) Dana 60 4.10 & Down 35 Spline - Full Float ARB-RD167 $1,106.84
Dana 60 30 Spline ARB Air Locker (4.56 & Up) Dana 60 4.56 & Up 30 Spline ARB-RD21 $1,075.29
GM 14 Bolt 10.5" 30 Spline ARB Air Locker (4.10 & Down) GM 10.5" 14 Bolt All 30 Spline ARB-RD114 $1,075.29
Ford 9" 31 Spline ARB Air Locker Ford 9" All 31 Spline ARB-RD119 $996.04
Ford 10.25" Full Float ARB Air Locker Ford 10.25/10.5" All 30 Spline ARB-RD37 $1,075.29
Dana 50 ARB Air Locker Dana 50 All 30 Spline ARB-RD50 $996.04
GM 12 Bolt Truck ARB Air Locker (3.73 & Up) GM 12 Bolt Truck 3.73 & Up 30 Spline ARB-RD12 $996.04
GM 9.5" Semi Float ARB Air Locker GM 9.5" All 33 Spline ARB-RD40 $1,075.29
GM & Dodge 9.25" IFS 33 Spline ARB Air Locker AAM 9.25" All 33 Spline ARB-RD51 $1,075.29