Service Kit for Mercury 15-20 hp EFI Outboards – Original Quicksilver The Quicksilver Service Kit 8M0172123 is specifically designed for Mercury EFI outboards with an engine power of 15-20 hp. This original service kit contains a selection of essential replacement parts to ensure your engine performs at its best and lasts longer. Contents of the service kit: Oil filter Fuel filter Gearcase drain seals Spark plugs Impeller Regular service following your owner's manual is crucial to extend the life of your engine and maximize its performance. Benefits of Quicksilver service kit: All key service components gathered in one convenient kit. Quicksilver 4-stroke oil and recommended gear lube sold separately.