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Huge inventory of 1966-1979 Ford Bronco and other off-road vehicle parts. Great prices and unmatched service from experienced Bronco builders.

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ARB Air Lockers


ARB Air Lockers

AIR LOCKER DESIGN AND ENGINEERING

Air Locker Components Design

Please note - some technical features may differ between models.

ARB Air Locker’s patented design has proved extremely reliable, even under the most arduous conditions. The Air Locker’s strength comes via structural components manufactured from aerospace grades of high alloy steels. ARB engineers increase the number of differential pinion gears, where possible, to distribute torque loads evenly, thus adding to the overall strength of the differential. Many recent Air Locker designs utilize timed gear sets, which further improve strength. This latest introduction to our design and manufacturing process has led to the acquisition of a second US patent on the product.

The design process of an Air Locker involves countless hours of testing. Computerized Finite Element Analysis (FEA) allows the designer to subject each Air Locker design to 'virtual' off road driving stress simulations much more extreme than those experienced in real life.

Destructive laboratory testing is carried out on prototypes to ensure the strength of the Air Locker exceeds that of the axles or other driveline components. Environmental test cells subject prototype models to high temperature running conditions (120°C), low temperature running conditions (-24°C), and harsh wheelspin engagement, for cycle durations of more than 20,000 actuations. Finally, field-testing is carried out with units being fitted to test 4WDs - from Jeep Wranglers to Toyota LandCruisers - operating in the harshest environments imaginable.

Once this exhaustive design phase is complete, Air Lockers are manufactured in Australia by ARB, and sold throughout the world.

Open this Application Chart to identify the ARB Air Locker designed for your vehicle.   Air Lockers are listed in numerical order below. You can either page through the list until you find the one you need or you can simply search for the Air Locker number (e.g. RD125) specified in the Application Chart.

With over one hundred part numbers available, ARB offers Air Lockers for practically every off road 4x4 truck on the market. A relentless commitment to research and design, the use of aerospace grade materials, and an uncompromising approach to manufacturing, have all contributed to the locker’s success in over eighty countries worldwide.

Air Locker Animation

Air Locker Comparison



UPDATES: RD33 is now upgraded to RD142





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Click here for a printable version
ARB Air Locking Differential Range Rover

Item #: ARBRD03
ARB Air Locker for '70 to '93 Range Rover. The Air Locker uses an air line running off a small compressor (sold separate... 
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ARB Air Locking Differential Nissan Patrol

Item #: ARBRD04
ARB Air Locker for Nissan Patrol. The Air Locker uses an air line running off a small compressor (sold separately) to en... 
"
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ARB Air Locking Differential Mitsubishi 83-86

Item #: ARBRD05
ARB Air Locker for Dodge Raider and Mitsubishi. The Air Locker uses an air line running off a small compressor (sold sep... 
"
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ARB Air Locking Differential GM 12-Bolt 3.73+

Item #: ARBRD12
ARB Air Locker for GM 12T. Fits 3.73 and up. The Air Locker uses an air line running off a small compressor (sold separa... 
"
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ARB Air Locking Differential Nissan Patrol H233

Item #: ARBRD17
ARB Air Locker for Nissan Patrol H233. The Air Locker uses an air line running off a small compressor (sold separately) ... 
"
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ARB Air Locking Differential Landrover Salisbury 3.54

Item #: ARBRD20
ARB Air Locker for Landrover. The Air Locker uses an air line running off a small compressor (sold separately) to engage... 
"
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ARB Air Locking Differential Dana 60 30-Spline 4.56+

Item #: ARBRD21
ARB Air Locker for Dana Spicer 60 with 30-spline axles. Fits 4.56 and up. The Air Locker uses an air line running off a ... 
"
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ARB Air Locking Differential Dana 60 30-Spline 4.10 Down

Item #: ARBRD22
ARB Air Locker for '70 to '93 Range Rover. The Air Locker uses an air line running off a small compressor (sold separate... 
"
[ read more ]


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ARB Air Locking Differential Nissan H233B (Drum)

Item #: ARBRD24
ARB Air Locker for Nissan H233B (Drum). The Air Locker uses an air line running off a small compressor (sold separately)... 
"
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ARB Air Locking Differential Mitsubishi V6

Item #: ARBRD25
ARB Air Locker for Mitsubishi V6. The Air Locker uses an air line running off a small compressor (sold separately) to en... 
"
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