Johnson 500 GPH Cartridge Aerator Pump 28503

Easy replacement feature allows quick change of pump capacity to accommodate different bait.
Low amp draw motor.
Smaller profiles fit in tighter quarters.
Water cooled housing reduces heat damage.
Stainless steel shafts suitable for fresh or salt water.

Extra length for thicker transom or valvecock
Standard 3/4" outlet fitting
Size: 500 GPH
Volts: 12V