Summit Racing: Eaton Differentials for Ford Broncos

Gaining the Upper Hand

If the plans for your Gen 6 Bronco include off-roading, install an Eaton Detroit Truetrac or ELocker4 rear differential. Either one will allow your Bronco to drive normally on the road but give you the upper hand for powering through mud holes or climbing over rocks off-road.

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Eaton Detroit Truetrac Differential

The totally maintenance-free Eaton Detroit Truetrac Differential features smooth, automatic operation in forward and reverse. Its patented parallel-axis, planetary helix gear design provides true limited slip-type performance that improves handling, enhances off-road performance, and increases stability while towing.

Under normal driving conditions, the Detroit Truetrac operates as a standard differential. When a wheel encounters a loss of traction or the terrain changes, the unit transfers torque to the high-traction wheel until wheel spin is slowed or completely stopped. When the vehicle exits the low-traction situation, the differential seamlessly resumes back to standard operation.

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Eaton Electronic ELocker4 Differential

The Eaton ELocker4 Differential features a 4-pinion design with net-forged gears for strength and durability. Electronic controls with a simple one-wire actuation provide driver-selectable operation and added reliability without air lines and compressors. By simply pressing the included activation switch, the differential sends all available torque to both wheels equally, providing maximum traction to overcome challenging terrain. A wiring harness with a relay, a chassis electrical system protecting diode, and a fuse are also included.

Eaton Detroit Truetrac and Electronic ELocker4 Differentials fit all 2021-2023 Bronco rear axles not equipped with a factory locking differential. Ford Broncos with factory 3.73 gears have a welded ring gear design requiring a replacement ring and pinion set to complete installation.


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Summit Racing Equipment






(800) 230-3030


P.O. Box 909

Akron, OH 44309

ABOUT Summit Racing Equipment®

Summit Racing Equipment was founded in 1968 as a part-time parts business in Stow, Ohio. Today, Summit Racing Equipment is one of the world’s largest supplier of automotive-performance-equipment company, and offers thousands of performance parts, aftermarket accessories, OEM parts, tools and garage equipment. Summit Racing’s goal is to give customers the parts they want at a fair price, deliver those parts fast, and back them with the best customer service on the planet.