Review on High-Performance Fuel Pump Kit for 🚀 Mercury/Mariner Outboard 21-857005A1 - 18-7817 Diaphram Washer Kit by Marcus Merritt

Check valve retaining pins are 1 piece of plastic instead of 2 that will never work in a million years. All I needed was to start the boat so I used old pins and a rebuilt pump which worked great for 3 days then I went out to start the boat and it wouldn't start. During the inspection I smelled strongly of fuel, the fuel filter burst while driving. Docked and doused the engine with gas when I tried to start it. Took the pump apart because now I am skeptical and almost blew myself up over these cheap parts and lo and behold the parts inside the pump are all warped and deformed. It is clear that these people simply stamped some of the parts they copied from poor quality material that was never tested. Do not buy this kit!