Sierra 2500 HD

Simply stated, more is always better when it comes to transmission fluid. A higher volume of fluid takes longer to heat up, allowing for lower, more stable transmission temperatures and extending your transmission life.Cast from high-quality A356-T6...

Excessive heat is the #1 killer of transmissions. Proper cooling of your fluid is one of the most important things that you can do to increase the life of your transmission.Bar and Plate style coolers represent premium quality. Within each repeating...

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...

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...

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 Cognito 3 Inch Performance Leveling Kit contains everything you need to level your truck or SUV with high quality components.The Cognito 3 Inch Performance Leveling Kit includes the Cognito Ball Joint SM Series Upper Control Arm Kit, Torsion Bar...

We have bundled everything you need in a lift kit for your Silverado/Sierra 2500/3500 2WD/4WD with high quality Cognito components. There is no guesswork. Cognito components are engineered, manufactured and assembled in the USA.The Cognito Non-Torsion...