SHURFLO Replacement Kit for Livewell Aerator Ballast Cartridge - 600GPH - 12V - 94-619-00

I purchased 2 of these for spares. I have 3 of these pumps on my boat. One failed (Jun 2022) after 2.5 years of intermittent use - maybe 30 hours of use - in salt and fresh water. Original pump shaft rusted completely through at the impeller. These pumps work very well, but won't last long in salt water. They should have a stainless or brass motor shaft to prevent salt water corrosion. They are way overpriced based on the short lifetime. Anchor Express is very price competitive.