Sierra 18-3392 JohnsonEvinrude Water Pump Kit with Housing The Sierra 18-3392 Water Pump Kit is a replacement kit for JohnsonEvinrude Outboards. Sierra replacement engine parts are designed to meet or exceed OEM requirements. Includes housing. Kit Includes 1 18-3059 - Impeller w Key 1 18-3348 - Cup Plate Assy. 1 18-3299 - Impeller Key 1 18-7158 - O-Ring 2 18-3135 - Stainless Steel Screw 1 18-2703 - Grommet 1 18-2704 - Grommet 1 18-2706 - Grommet 4 18-3136 - Stainless Steel Bolts 1 18-2769 - Rub