Sierra 3500 HD

Excessive heat is the #1 killer of transmissions. Proper cooling of your transmission 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 the latest technology. Within...

This Mishimoto Aluminum Transmission Pan is a direct-fit, high-performance upgrade for your Chevy/GMC 6.6L Duramax. Cast from high-quality aluminum and powder coated Gunmetal Gray, our transmission pan is a robust and long-lasting upgrade for your...

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...

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...

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...

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...

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...