For those looking to improve cooling for their pickup truck's rear axle and provide more strength, better performance and/or ease of use with a new differential cover, there are a variety of ...

Throughout the last 18 months, we've added horsepower to our '97 Ford F-350 Power Stroke in more ways than one. We added Stage 1 injectors, a complete fuel system, an aftermarket high-pressure oil ...

The mad scientists from Garage 54 have moved to making clear covers for more parts of a car. Watch how oil flows in a rear differential through a clear plastic cover. This serves as a reminder that ...

I have a 2007 Ford F-150 with the FX4 package, a little lift, and some larger-than-factory (28575R18) Toyo all-terrain tires. The truck has a ton of miles on it—nearly 200,000 miles—and I noticed the ...

A key part of getting a car's power to the ground effectively is the differential, which uses gearing to regulate the split of power between wheels on an axle. This video shows exactly how it works.

Quadruple-digit-horsepower 2003-2004 Terminator Cobras are so commonplace these days that it's easy to forget the cars were designed for nearly one-third that figure. Add sticky tires, hard launches, ...

This basic exploded view of a typical four-pinion Ford factory Traction-Lok shows How all the parts fit together. Ford has used "'open" diffs, Detroit Lockers, and several types of clutch-type limited ...