Engine housing is the term used to describe the components of an engine that protect and contain the internal parts. The two main components of engine housing are the POD, which stands for Power Output Device, and the Crankcase. The POD is a three-letter acronym that refers to the device that converts energy from the engine into usable power. The Crankcase is a nine-letter term that refers to the casing that houses the crankshaft, connecting rods, and other internal components of the engine. Together, these two components form the engine housing, which protects the internal parts of the engine from damage and wear.