Amazon Secure Payment System Continue shopping “Johnson Pump Compact Cartridge Bilge Pump (500 GPH 12V)” has been added to your cart. Product Price Quantity Subtotal × Johnson Pumps of America 28552 Marine Pump Cartridge for 500 GPH Motor $21.61 Johnson Pumps of America 28552 Marine Pump Cartridge for 500 GPH Motor quantity $21.61 × Johnson Pump Compact Cartridge Bilge Pump (500 GPH 12V) $23.97 Johnson Pump Compact Cartridge Bilge Pump (500 GPH 12V) quantity $23.97 Coupon: Apply coupon Update cart Cart totals Subtotal $45.58 Total $45.58 Proceed to checkout