ARB 4x4 | ARB RD100 Air Locker Differential Dana 30 with 27 Splines

Regular price $1,091.00

ARB RD100 Air Locker Differential Dana 30 with 27 Splines


Provides 100% Traction

Vastly improved traction means less reliance on momentum, reducing the likelihood of vehicle damage.

Comfort and Safety

Easy, convenient operation allows the user to concentrate on the terrain without leaving the comfort and safety of the driver's seat.
Ultra durable and powerful; only the highest quality materials used in construction.
Patented gear technology and 2-piece design ensures optimal locking strength.
Forged gears provide superior strength and durability.
Incredibly simple, yet effective, design employs minimal moving parts for maximum reliability.

Effective Design

Thoroughly tested and proven design.
Front and rear Air Lockers available for most makes and models.
4WD & 2WD applications.
Easy maintenance; no special additives required.

About This Product

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 (sold separately) 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.


Dimensions (L x W x H): 10.50 x 10.50 x 11.00 inches. 
19.00 lbs.
Differential: Dana 30.
3.73 & UP.
Axle Splines: 
Shaft Diameter: 


  • Jeep Wrangler JK: 2007 ON
  • Jeep Wrangler JL: 2018 ON
  • TJ Wrangler, Cherokee, XJ Wagoneer, WJ Grand Cherokee: 1971 ON
  • Full Size AMC Cherokee, Grand Wagoneer: 1971 - 1973
  • Jeep Liberty, Cherokee: 2001 ON