Outboard service kit for Mercury 4hp 2 stroke SN 9477830 THRU 9589153, 9589154 T. FUEL FILTER REPLACEMENT CLEAR BOWL WITH DRAIN. Outboard One Way Valve Universal Primer Bulb, 1/4'', 6mm For Tohatsu Mercury Mar. Livewell Pump 12V 1.0A 350GPH Boat Bilge Pump Submersible boat pump.