This is the final part of the BMW M50B25 engine restoration series. Step by step, the engine has been completely restored and assembled. In this episode, you’ll see the last stage of the process — the final assembly details and the completed engine. The BMW M50B25 is one of the most iconic straight-six engines, known for its reliability and performance. Restoring it from the ground up is a challenge, but also a way to bring classic engineering back to life. Watch the previous parts of the restoration here: Part 1 → Part 2 → If you enjoy this project, don’t forget to subscribe for more builds, restorations, and garage life.