Sierra 3500 HD

aFe POWER's new 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...

Replace the stock, stamped metal pan with one that will help keep your transmission cool and protected.Cast from high-grade A356-T6 aluminum alloy and holding stock fluid capacity, it is only 5" deep making this pan perfect for those who like their rides...

Yukon Hardcore Diff Covers are constructed from thick-walled, high-strength nodular steel to protect lockers, gears and axles from the most extreme hits in off road driving. They also increase the structural rigidity of the differential, reducing...

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...

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...

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...

Banks Ram-Air Differential Cover is unlike any other. After testing covers with flat-backs and those with larger fluid capacities, it was apparent that those covers do not cool as well as advertised and suffer from poor fluid dynamics. As a result,...

Banks Ram-Air Differential Cover is unlike any other. After testing covers with flat-backs and those with larger fluid capacities, it was apparent that those covers do not cool as well as advertised and suffer from poor fluid dynamics. As a result,...

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...

Covered by a limited lifetime warranty.Excessive heat is the #1 killer of transmissions. For individuals who tow, race or simply run their diesel hard, proper cooling of your transmission fluid is one of the most important things that you can do to...

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 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...