Fiat Doblo Crank Case Gaskets Available Here. Crank case gaskets are small parts, but play an integral role in making sure that fuel is removed from the engine crank case. It has a variety of purposes, including helping to improve overall vehicle emissions, enhancing engine efficiency and ensuring that the vehicle is functioning at an optimal level. If crank case gaskets are not functioning properly, this can cause a wide array of symptoms, including a contaminated oil filter, excessive oil leaking and consumption and inhibiting the overall performance of the vehicle. If any of these symptoms occur, it is important to make sure that the gaskets are replaced promptly to protect the vehicle’s engine from any damage.