Video: How Eaton’s E-Locker Technology Works

The earliest automakers probably didn’t give much thought to the technology in the differentials of rear-wheel drive cars. Posi-traction and Detroit Lockers were major performance advancements that seriously helped performance though, and these days modern technology has made even more amazing things possible.

This video showcases Eaton’s E-Locker technology, an amazing device that provides the best of an open-differential around town, and the grip of a full locking differential at the track.


An open differential is a good option around town, providing comfort and better efficiency when it comes to fuel economy. Unfortunately, this setup only spins one wheel. Eaton’s E-Locker turns that open-differential into a locking differential with the push of a button.

This video explains how it works. When the E-Locker system is engaged via a dash-mounted button, the friction between the armature and electro-magnet forces a ball ramp mechanism to push the locking pins into the matching holes. This engages the second axle, going from an open differential to a locking one for the track.

It is one of the more all-around useful enhancements you can add to your car, so check it out.

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About the author

Chris Demorro

Christopher DeMorro is a freelance writer and journalist from Connecticut with two passions in life; writing and anything with an engine. This has led him to pursue a full time career as a freelancer with a focus on motor vehicles of all kinds.
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