Boat water pump acting weak or not pumping? This impeller repair kit might be what you need. It fits Johnson model 09-824P and Jabsco 6303-0001 pumps (also replaces part 500138). Inside you’ll get a new impeller – that’s the rubbery spinning part that moves water – ready to swap out when yours is worn or cracked. Part number 18-3080 from Marine Parts. Great for routine maintenance or fixing a failing pump on your marine engine, bilge, or livewell system. Easy to install if you’re handy, and much cheaper than a whole new pump. Keep your boat’s cooling system running reliably!