Water pump repair kit 77177A3 is for Mercury and Mariner outboards 30-70hp. The kit includes water impeller, upper and lower housings, face plate, gaskets, drive key, face seal, seal carrier and water tube coupling. One of the most complete kits available to repair 2-cycle outboard water pumps. See your owner's manual or service manual for specific applications and replacement instructions.The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier supplier of Mercury Marine original Equipment replacement engine parts, oils, and accessories, but also works to serve all original Equipment brands in the marine and powersports industries. It has earned a loyal following by providing the highest quality products that are tested through some of the most rigorous environments and testing procedures. No aftermarket company comes close to the level of research and design as Quicksilver; buying Quicksilver is buying performance, protection and peace of mind.