Quicksilver 33-8M0095454 Spark Plug NGK BPR5EFS-13Mercury Standard Spark Plugs are proven technology that offer reliable performance. Standard spark plugs are treated with corrosion-resistant plating to ensure ease of installation and removal. The solid copper core offers superior heat dissipation, conductivity and broad heat range. Mercury Standard plugs are an OE cornerstone that has provided decades of reliable performance.Product Features Resistor type spark plugs help reduce radio frequency interference (RFI) to onboard electronics; This spark plug meets Mercury Marine original equipment manufacturer specifications to best protect your engine and ensure its optimum performance; The copper core electrode increases heat conductivity for optimal temperature operating range and good electrode wear characteristics; Check your engine owner's manual for the correct spark plug, electrode gap and use only the plug as recommended by your engine's original equipment manufacturer; Application: Fits MCM 4.5L & 6.2L Mercury enginesSpark Plug Specifications: Stock Number: 2359; Resistance (Ohm): 5k; Ground configuration: Surface Discharge; Ground electrode core material: Nickel; Center electrode core material: Copper; Center Electrode Tip Material: Nickel; Interchangeable with: NGK; BPR5EFS-13; 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.