Date: January 17, 2007

Eaton’s New Electronic Locking Differential Reaches New Heights In Performance

SOUTHFIELD, MICH. – Diversified industrial manufacturer Eaton Corporation has developed a
new electronic locking differential, the Eaton ELockerTM, application for Jeep® products equipped
with the Dana 30 axles. With the simple press of a button, the new ELocker provides off-road
performance enthusiasts with superior traction and drivability.

With its four-pinion design, the new ELocker withstands the deep gearing, large tires and harsh offroad
terrain that would tax even the most robust original equipment component. The new Eaton
ELocker will be available for stock 27-spline axle or the high-performance 30-spline axle.

“We designed this selectable locker for the true Jeep enthusiast,“ said Jeff Romig, general
manager, Eaton Performance Products. “The unit is built to withstand the rigors of wheeling
through trails of mud and sand, and even climbing rock surfaces, yet when turned off it provides
the road manners people have come to expect from Eaton differentials.”

When extra traction is needed on loose or slippery terrain, drivers can simply flip a switch to lock
the axle containing the Eaton ELocker to deliver equal power to the front wheels. In the normal or
unlocked mode, the ELocker delivers the handling characteristics of an open differential. In the
locked mode, it offers additional traction for the most difficult terrain. The ELocker can even be
activated while the vehicle is in motion, provided both front wheels are turning at equal speed and

The Eaton ELocker uses electromagnets to push locking pins into a sturdy collar. The collar locks
the axle-side gear into the differential case, performing as a spool to deliver equal power to both
front wheels. This system is less complicated than an air-operated system and easier to install,
because it does not require an add-on air compressor.

Eaton is a global manufacturer of roots-type superchargers; engine valves and lifters; and limited
slip and locking differentials, including the Eaton® and Detroit Locker® brands. Eaton also
manufactures Aeroquip® hose, hose assemblies, tube assemblies and other connector

Eaton Corporation is a diversified industrial manufacturer with 2005 sales of $11.1 billion. Eaton is
a global leader in electrical systems and components for power quality, distribution and control;
fluid power systems and services for industrial, mobile and aircraft equipment; intelligent truck
drivetrain systems for safety and fuel economy; and automotive engine air management systems,
powertrain solutions and specialty controls for performance, fuel economy and safety. Eaton has
60,000 employees and sells products to customers in more than 125 countries. For more
information, visit

Contact: Jim Parks
(248) 226-7191 office
(248) 890-5899 mobile