Back in 2000, we installed one of the original ARB air locker kits on a rear Dana 60 axle. Having a full locker at the flip of a switch was about the coolest gadget we had ever installed on our test mule. Thanks to its flawless operation over the last abusive nine years, it has proven itself to be well worth the money and is still working just fine. While the original ARB compressor was definitely up to the task of running the air locker, it was strained to handle most other duties. At 29 psi, the first generation compressor could only produce about 0.85 cfm.
Fast forward to present day, and ARB has introduced their new High Output On-Board Air Compressor. With its 50-percent duty cycle, this little beauty will produce 2.65 cfm at 29 psi! That is enough to run two lockers and air up a set of 35-inch tires on a single duty cycle. Its small, efficient design allows it to fit where other high-output compressors wouldn't be able to. Durable, yet lightweight construction enables ARB to sell a similar version of the compressor in a standalone, portable kit as well. Whether you own an ARB air locker or not, their high-output compressors are one of the most redeeming parts that you'll purchase for your rig.