{"product_id":"quicksilver-ngk-iridium-spark-plug-set-889246q39","title":"Quicksilver NGK Iridium Spark Plug Set 4-Pack (889246Q39)","description":"\u003cp data-start=\"63\" data-end=\"513\"\u003eThe Quicksilver 889246Q39 Spark Plug Set includes four NGK Laser Iridium spark plugs for Mercury applications that call for this exact part number. This plug is identified as NGK \u003cstrong data-start=\"268\" data-end=\"290\"\u003eILFR6GE \/ ILFR6G-E\u003c\/strong\u003e and is sold by Mercury as a genuine Quicksilver replacement. Mercury notes these plugs come pre-gapped to engine specification, but the gap should still be checked before installation. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"515\" data-end=\"533\"\u003e\u003cstrong data-start=\"515\" data-end=\"531\"\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"534\" data-end=\"839\"\u003e\n\u003cli data-start=\"534\" data-end=\"594\"\u003eGenuine Quicksilver \/ Mercury replacement spark plug set\u003c\/li\u003e\n\u003cli data-start=\"595\" data-end=\"638\"\u003e4-pack for engines requiring four plugs\u003c\/li\u003e\n\u003cli data-start=\"639\" data-end=\"718\"\u003eNGK Laser Iridium design for durability and consistent ignition performance\u003c\/li\u003e\n\u003cli data-start=\"719\" data-end=\"756\"\u003eMercury part number \u003cstrong data-start=\"741\" data-end=\"754\"\u003e889246Q39\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"757\" data-end=\"839\"\u003eNGK plug identifier \u003cstrong data-start=\"779\" data-end=\"801\"\u003eILFR6GE \/ ILFR6G-E\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"841\" data-end=\"1221\"\u003e\u003cstrong data-start=\"841\" data-end=\"865\"\u003eEngine Compatibility\u003c\/strong\u003e\u003cbr data-start=\"865\" data-end=\"868\"\u003eThis set is commonly listed for certain \u003cstrong data-start=\"908\" data-end=\"929\"\u003eMercury Verado L4\u003c\/strong\u003e applications, including 1.7L 135, 150, 175, and 200 HP models. Some sellers also associate the same plug family with additional Verado applications, but exact fitment should always be confirmed against the engine model and serial number before ordering. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1223\" data-end=\"1485\"\u003e\u003cstrong data-start=\"1223\" data-end=\"1255\"\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003cbr data-start=\"1255\" data-end=\"1258\"\u003ePlease confirm compatibility by checking your Mercury engine serial number and owner’s manual before purchase. Mercury specifically advises using only the spark plug listed for your engine. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1487\" data-end=\"1857\"\u003e\u003cstrong data-start=\"1487\" data-end=\"1523\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003cbr data-start=\"1523\" data-end=\"1526\"\u003eReplace spark plugs during scheduled tune-up service or when you notice hard starting, rough idle, misfiring, reduced fuel efficiency, or weak acceleration. One marine retailer specifically notes a \u003cstrong data-start=\"1724\" data-end=\"1768\"\u003e300-hour service interval recommendation\u003c\/strong\u003e for these NGK plugs on applicable Mercury engines. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1859\" data-end=\"2139\"\u003e\u003cstrong data-start=\"1859\" data-end=\"1881\"\u003eInstallation Notes\u003c\/strong\u003e\u003cbr data-start=\"1881\" data-end=\"1884\"\u003eAlways verify the plug gap before installation, even when the plugs are supplied pre-gapped. Install only the exact plug specified for your engine to help maintain proper performance and avoid ignition-related issues. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2141\" data-end=\"2182\"\u003e\u003cstrong data-start=\"2141\" data-end=\"2180\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2183\" data-end=\"2368\"\u003e\n\u003cli data-start=\"2183\" data-end=\"2213\"\u003eNGK \u003cstrong data-start=\"2189\" data-end=\"2211\"\u003eILFR6GE \/ ILFR6G-E\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2214\" data-end=\"2368\"\u003eNGK stock number \u003cstrong data-start=\"2233\" data-end=\"2241\"\u003e4212\u003c\/strong\u003e\u003cbr data-start=\"2241\" data-end=\"2244\"\u003eCross-reference should still be verified by engine model and serial number before use. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2370\" data-end=\"2814\"\u003e\u003cstrong data-start=\"2370\" data-end=\"2392\"\u003eParts Desk Insight\u003c\/strong\u003e\u003cbr data-start=\"2392\" data-end=\"2395\"\u003eFor modern Mercury applications, using the exact spark plug matters more than many boat owners realize. Heat range, electrode design, and factory spec all affect idle quality, throttle response, and long-term ignition reliability, especially on supercharged or high-output four-stroke platforms. Mercury’s own guidance is to stick with the plug listed in the manual for the engine. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2816\" data-end=\"2881\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"MERC","offers":[{"title":"Default Title","offer_id":43563902304292,"sku":"889246Q39","price":46.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/aa7c0fd3-1699-45eb-9a73-7e28387499dc.png?v=1775762250","url":"https:\/\/marisolmarine.com\/products\/quicksilver-ngk-iridium-spark-plug-set-889246q39","provider":"Marisol Marine Company","version":"1.0","type":"link"}