Trim cylinder anchor pin retaining E-Ring 815949 is for use on MerCruiser Alpha One Gen II stern drives. When replacing the cylinder anchor pin E-Ring, inspect pin threads, bushing and cap for damage or wear. Replace them as necessary to assure proper function of the trim function. The Quicksilver brand has been the marine industry leader in delivering premium engine lubricants, accessories and original equipment replacement parts for more than 65 years. It applies the same quality standards as a supplier of lubricants and replacement parts for many original equipment brands in the powersports industries. Quicksilver has earned a loyal following by providing the highest quality products, validated through some of the most rigorous environments and testing procedures. No aftermarket company comes close to matching the level of research and design that goes into Quicksilver products. Buying Quicksilver is buying performance, protection and peace of mind.