Ford first installed 7.3-liter diesel engines in its trucks in the 1980s but they're still fan-favorites today, despite their steep price tag.

Learn more about the history and specs of the legendary 7.3 Power Stroke diesel engine and when International Navistar produced it for Ford.

If you own a Ford with a 7.3L Power Stroke diesel engine and you are looking to upgrade its performance, here are five of the best upgrades.