NGK IZFR5G Spark PlugNGK Laser Iridium spark plugs offer the best combination of performance and longevity. The iridium tipped center electrode provides durability six times harder than platinum. NGK’s high-grade pure alumina ceramic and 98% pure copper core prevents the spark plug from overheating while providing reliable starts.Laser iridium plugs are tested to the highest standards to ensure quality and durability. Actual OE or equivalent replacement spark plug.Part Number:IZFR5GStock Number: 5887Resistance (Ohm): 5000Ground configuration: StandardGround electrode core material: NickelCenter electrode core material: CopperCenter electrode tip material: IridiumCheck 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.ReplacesQuicksilver / Mercury33-889597QFrequently Asked QuestionsWhat is the NGK IZFR5G Spark Plug used for?The NGK IZFR5G Spark Plug is an actual OE or equivalent replacement spark plug featuring Laser Iridium construction. Its iridium-tipped center electrode is designed for durability, while the pure alumina ceramic and copper core help prevent overheating and provide reliable starts.What are the specifications of the NGK IZFR5G Spark Plug?The NGK IZFR5G has part number IZFR5G and stock number 5887. It has a resistance of 5000 ohms, standard ground configuration, a nickel ground electrode core, a copper center electrode core, and an iridium center electrode tip.What type of electrode does the NGK IZFR5G Spark Plug use?The NGK IZFR5G uses an iridium-tipped center electrode with a copper center electrode core. The product description states that the iridium tip provides durability six times harder than platinum, while the 98% pure copper core helps prevent the spark plug from overheating.Is the NGK IZFR5G Spark Plug an OE replacement?Yes. The NGK IZFR5G is identified as an actual OE or equivalent replacement spark plug. Before installation, check your engine and maintenance manual to confirm that IZFR5G is the spark plug recommended by your engine’s original equipment manufacturer.What spark plug does the NGK IZFR5G replace?The NGK IZFR5G Spark Plug replaces Quicksilver / Mercury part number 33-889597Q. Verify the recommended spark plug for your specific engine using the engine and maintenance manual before selecting a replacement.Why is it important to verify the correct spark plug before installing the NGK IZFR5G?The product description recommends using only the spark plug specified by the engine’s original equipment manufacturer. Using the wrong spark plug can reduce optimum performance and fuel economy or cause damage to the engine. Check your engine and maintenance manual before installation to verify compatibility.//