Amazon Secure Payment System Continue shopping “Johnson Pumps of America 28552 Marine Pump Cartridge for 500 GPH Motor” 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 Coupon: Apply coupon Update cart Cart totals Subtotal $21.61 Total $21.61 Proceed to checkout