Engine block, also known as a cylinder block or motor block, refers to the primary metal casing that encloses and supports the internal combustion engine components and systems. However, there are many other terms used interchangeably with the term engine block. For instance, some people call it motor block, crankcase, or machine block. The term "block" may also be used to describe the engine's casing. The engine block is also frequently referred to as a cylinder bank, as it houses all cylinders and pistons that make up the powertrain of an automobile. Regardless of the name, the engine block is an essential component of any internal combustion engine, and it is responsible for the vehicle's overall performance and durability.