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 × Sierra International 18-8505 Marine Exhaust Elbow Mounting Kit for Mercruiser Stern Drive $21.96 Sierra International 18-8505 Marine Exhaust Elbow Mounting Kit for Mercruiser Stern Drive quantity $21.96 × 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 $43.57 Total $43.57 Proceed to checkout