This is the valve cover gasket bmw 328i.
The bmw 328i gasket is a replacement part, but for the bmw 328i it’s the only way to go as the bmw 328i is a front-engine-drive car, so the gasket is very important for keeping the engine’s seal airtight.
The bmw 328i uses a 4-inch aluminum gasket to keep the engine airtight, and the part is made to fit the standard bmw 328i gasket well, so it’s one of the most common gasket types you’ll find on the market.