Ever since the first engine was placed in an automobile, people have been devoting time to making it better. In the past 50 years specifically, advancements in technology have helped develop the engine and its many working parts into a machine capable of much more than was ever thought possible in the 50 years prior. In this issue, Engine Builder’s 50th anniversary, we highlight several companies that have helped advance the engine and the aftermarket industry over the past 50 years.