Based on a new GMT900 platform, the Sierra now had a level of sophistication to accompany its power and ability as a truck. A 6.2L sibling of the LS3 was also introduced, giving you the ability to buy a 400 horsepower truck off of the showroom floor.

Holley has the widest selection of high-quality gaskets you can find. From the intake manifold to the oil pan, and everything between, we have the gaskets to help you get your projects back together and back on the road.