{"product_id":"mercury-ngk-izfr5g-4-33-889597q","title":"Mercury – NGK IZFR5G Laser Iridium Spark Plug | Ignition Component | Steel \u0026  Ceramic | 889597Q","description":"\u003ch2\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – NGK IZFR5G Laser Iridium Spark Plug | Ignition Component | Steel \u0026amp; Ceramic | 889597Q\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOverview\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e There’s a kind of quiet trust that builds between you and your engine once you’ve found a spark plug that never hesitates. The NGK IZFR5G Laser Iridium plug feels like one of those dependable little parts you install and forget — because it just works. You turn the key, the motor fires, and the day gets going without a second thought. Whether you’re easing out of a no-wake zone or pushing toward open water, it’s comforting knowing the ignition is as clean and steady as the sunrise over the tide.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eKey Features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eLaser Iridium center electrode for strong, consistent ignition\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCopper core construction for steady firing and long service life\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePure alumina silicate ceramic insulator for superior strength and heat transfer\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eTrivalent metal plating for corrosion resistance and non-seizing installation\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eRibbed suppressor seal to prevent flashover and reduce misfires\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePre-gapped to Mercury specifications (gap should still be verified before installation)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFits select Mercury and Mercury Marine outboards requiring NGK IZFR5G spark plugs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eSuitable for a wide range of FourStroke engines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWorks well on bass boats, pontoons, center consoles, bay boats, and nearshore fishing boats\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCompatible with engines designed for Iridium ignition components\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e A good spark plug changes how your whole engine feels — not just how it starts. This Laser Iridium plug delivers a crisp, clean ignition that helps the motor settle into a smooth idle and climb through the throttle range with confidence. You’ll notice fewer stumbles coming out of turns, steadier mid-range cruising, and more predictable acceleration when you need to push across a windy stretch.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThe ceramic insulator sheds heat quickly, protecting the plug during long hours of idling, trolling, or slow runs along the shoreline. The Iridium tip resists wear even after heavy use, keeping the spark consistent over time. And because it fights off fouling, you won’t spend your Saturday pulling apart the cowling when you’d rather be casting a line or heading toward your favorite anchorage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhy Buy OEM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Mercury Marine parts are built around exact ignition timing and combustion requirements. Aftermarket plugs might fire, but they rarely provide the long-term consistency needed to protect engine performance. Choosing the OEM-specified plug means cleaner ignition, better fuel economy, and fewer surprises when you least want them. It’s simply the smarter play — the kind of advice you’d give a friend at the dock before a long weekend run.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFAQ\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ1: Which engines does this plug fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Any Mercury engine that specifies NGK IZFR5G in the owner’s manual.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: Why choose this OEM spark plug instead of aftermarket?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It meets Mercury’s ignition and heat-range requirements, offering better stability and lifespan.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How can I confirm it’s correct for my setup?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Check your manual — if it lists part number 889597Q or NGK IZFR5G, this is the one.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Can it be used in saltwater and freshwater?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Absolutely — it’s built to resist corrosion and withstand marine heat cycles.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation straightforward?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes, most boat owners can install it with a standard spark plug socket.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46932966375715,"sku":"PV683587","price":24.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/PV683587.jpg?v=1698781661","url":"https:\/\/partsvu.com\/en-mx\/products\/mercury-ngk-izfr5g-4-33-889597q","provider":"PartsVu","version":"1.0","type":"link"}