Listed here is a USED Mercruiser Alternator Bracket. This is a Genuine Mercruiser OEM part NOT an aftermarket replacement. The part number is 16738A1 or 16738A 1. Part lists for over 0 new from manufacturer. Part you see pictured is the part you will receive with nothing extra. THE SPACER WHERE THE ALTERNAOR MOUNTS CAN BE REMOVED FOR CERTAIN APPLICATIONS. Came off of a 1989 3.0 Mercruiser that was only used on an Orlando freshwater lake and has never seen salt water. Will also fit many other 4 cylinder engines throughout the years. Please check your part numbers and/or measurements (see pictures). If you need help with compatibility or to confirm measurements please feel free to contact me and I will help you to the best of my abilities. Thank you for your interest. Steve :)