Bell housing exhaust bellows 8M0123227 is for use on MerCruiser MC-I, MR, Alpha One, Alpha One Gen II, Vazer, Bravo and Blackhawk (1963 and newer) sterndrives. The bellows is made of flexible, durable rubber for a long service life. Includes stainless steel hose clamps at each end. Easy to install with common tools. Periodic maintenance and service helps protect your investment in your engine and your boating pleasure. See your owner's manual or service manual for specific applications and replacement instructions.