Sierra 2500 HD

Suffering from poor performance and reduced fuel economy resulting from oversized tires?A Nitro gear change will help get that performance and economy back!If you've fitted larger tires to your vehicle then you are likely experiencing a loss in...

Help keep your 2011-Present GMs front differential running cool and clean with an upgraded differential cover from PPE. With the largest set of cast cooling fins in the industry, found both inside as well as outside the pan, PPEs differential covers...

Help keep your rear differential running cool and clean with an upgraded differential cover from PPE. Made in the USA from high-quality cast aluminum for strength and optimum heat dissipation. Combined with the largest set of cast cooling fins in the...

Made from high-quality cast A356-T6 aluminum for strength and optimum heat dissipation. PPE's differential covers offer industry-leading fluid cooling. Equipped with internal heat sinks and external cooling fins, increasing the pan's surface area helps...

Help keep your rear differential running cool and clean with an upgraded differential cover from PPE. Made in the USA from high-quality cast aluminum for strength and optimum heat dissipation. Combined with the largest set of cast cooling fins in the...

Help keep your GM front differential running cool and clean with an upgraded differential cover from PPE. With the largest set of cast cooling fins in the industry, found both inside as well as outside the pan, PPE's differential covers offer fluid...

Made from cast aluminum, these covers add strength to center of the transmission case eliminating trans oil seepage at the mating surface.Cooling fins double the surface area (60.74 sq. in.) when compared to stock (30.62 sq. in.), which increases heat...

aFe POWER's AAM 9.25 front differential cover brings performance engineering to the protection of your axle's differential. This differential cover is constructed out of durable cast aluminum with reinforcing ribs for maximum strength and comes with all...

Cracked transmission tail shaft housings (located between the transfer case and the transmission) are a common problem for GM Allison-equipped 4x4 pick-ups in off-road and drag racing applications. Even a nominal amount of driveline vibration can cause...

aFe POWER's rear differential cover brings performance engineering to the protection of your axle's differential. This differential cover is constructed out of durable cast aluminum with reinforced ribs for maximum strength. This cover comes with all...

The HDX Grille Guard is the ultimate in extreme truck gear. It's available in a stainless or black powder coat finish and the uprights are finished and protected with extra wide rubber that is 1/8" thick and 2 3/4" wide. The result is a solid clean look...