The ACDelco 31638 GM 88909259 Formable 20 Inch Upper or Lower Engine Coolant Hose is a versatile and durable rubber hose designed for use in the engine compartment of vehicles. With a 1.5 inch interior diameter and a length of 20 inches, this hose can be easily mounted using a bolt-on style. It is petroleum resistant and features a matte finish, making it suitable for various universal fitment applications. The hose includes the necessary items and is manufactured in Mexico to meet OE standards, providing a reliable solution for engine cooling components.