Quicksilver 827858Q NGK DPR6EA-9 Standard Spark Plug for Mercury 4-Stroke OutboardsQuicksilver replacement NGK DPR6EA-9 spark plug. This standard plug is pre-gapped to engine manufacturer specifications. This standard spark plug features a copper core to promote heat dissipation and more efficient spark plug operation; has a threaded terminal.Check your engine and maintenance manual for the correct spark plug and only use as recommended by your engine's original equipment manufacturer. Using the wrong plug can reducing optimum performance, reduce fuel economy or cause damage to your engine.Features Copper core promotes efficient heat dissipation and stable spark; Pre-gapped to manufacturer specifications for proper installation; Threaded terminal for secure spark plug wire connection; Trivalent metal plating for corrosion resistance and easier removal; Meets Mercury Marine OEM specifications for quality and fit;