Boat owners, this is one of the most important maintenance items you can buy! This is a complete water pump repair kit (part #821354A2) for a bunch of Mercury, Mariner, and Force outboard motors from 25 to 50 horsepower. A worn-out impeller means your engine isn't getting cooled properly, and that's a fast track to a very expensive repair. This kit has everything you need: the new neoprene rubber impeller, a drive key, the upper and lower gaskets, a wear plate, seals, and washers. The parts are made to OEM specs from corrosion-resistant materials. Before you buy, this is super important: you MUST check your engine's exact model, serial number, and year. The same horsepower can have different parts! The listing has a big compatibility list – check it carefully or message the seller with your info to be sure. Installation is a bit of a job (you'll need to drop the lower unit), so have a service manual handy. Use some dish soap or silicone grease to lube the impeller during installation. Don't wait for your engine to overheat – swap this impeller out as part of your regular season prep!
