{"product_id":"mercury-ngk-bpr6efs-10-816336q","title":"Mercury – Quicksilver 816336Q NGK BPR6EFS Standard Spark Plug | Sold Individually | Marine Engine OEM Plug | 816336Q","description":"\u003cp data-start=\"0\" data-end=\"111\"\u003e\u003cstrong data-start=\"0\" data-end=\"109\"\u003eMercury – Quicksilver 816336Q NGK BPR6EFS Standard Spark Plug | Sold Individually | Marine Engine OEM Plug | 816336Q\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"113\" data-end=\"116\"\u003e\n\u003ch3 data-start=\"118\" data-end=\"136\"\u003e\u003cstrong data-start=\"122\" data-end=\"134\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"137\" data-end=\"469\"\u003eA fresh set of plugs can make your engine feel brand new. The \u003cstrong data-start=\"199\" data-end=\"254\"\u003eQuicksilver 816336Q NGK BPR6EFS Standard Spark Plug\u003c\/strong\u003e delivers consistent ignition, better combustion, and long-lasting performance for your Mercury Marine engine. Pre-gapped to factory specifications, it’s ready to drop in and get your motor firing crisp and clean.\u003c\/p\u003e\n\u003cp data-start=\"471\" data-end=\"755\"\u003eWhether you’re running a quiet cruise or throttling hard, reliable spark makes all the difference. Built with NGK’s trusted marine design and backed by Mercury’s engineering, this plug gives you steady starts, smoother idling, and strong top-end performance every time you head out.\u003c\/p\u003e\n\u003chr data-start=\"757\" data-end=\"760\"\u003e\n\u003ch3 data-start=\"762\" data-end=\"784\"\u003e\u003cstrong data-start=\"766\" data-end=\"782\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"787\" data-end=\"889\"\u003e\n\u003cstrong data-start=\"787\" data-end=\"799\"\u003ePurpose:\u003c\/strong\u003e Provides consistent, reliable spark for optimum engine performance and fuel efficiency.\u003c\/li\u003e\n\u003cli data-start=\"892\" data-end=\"1035\"\u003e\n\u003cstrong data-start=\"892\" data-end=\"904\"\u003eFitment:\u003c\/strong\u003e For Mercury and Mariner outboards and inboards that specify \u003cstrong data-start=\"965\" data-end=\"980\"\u003eNGK BPR6EFS\u003c\/strong\u003e spark plugs — always confirm in your owner’s manual.\u003c\/li\u003e\n\u003cli data-start=\"1038\" data-end=\"1149\"\u003e\n\u003cstrong data-start=\"1038\" data-end=\"1053\"\u003ePre-Gapped:\u003c\/strong\u003e Comes set to \u003cstrong data-start=\"1067\" data-end=\"1088\"\u003efactory gap specs\u003c\/strong\u003e, but it’s recommended to double-check before installation.\u003c\/li\u003e\n\u003cli data-start=\"1152\" data-end=\"1251\"\u003e\n\u003cstrong data-start=\"1152\" data-end=\"1169\"\u003eConstruction:\u003c\/strong\u003e Features a \u003cstrong data-start=\"1181\" data-end=\"1196\"\u003ecopper core\u003c\/strong\u003e for superior heat transfer and efficient combustion.\u003c\/li\u003e\n\u003cli data-start=\"1254\" data-end=\"1369\"\u003e\n\u003cstrong data-start=\"1254\" data-end=\"1269\"\u003eDurability:\u003c\/strong\u003e \u003cstrong data-start=\"1270\" data-end=\"1297\"\u003eTrivalent metal plating\u003c\/strong\u003e prevents corrosion and seizing, making removal easier after long use.\u003c\/li\u003e\n\u003cli data-start=\"1372\" data-end=\"1484\"\u003e\n\u003cstrong data-start=\"1372\" data-end=\"1393\"\u003eInsulator Design:\u003c\/strong\u003e NGK’s \u003cstrong data-start=\"1400\" data-end=\"1438\"\u003ealumina silicate ceramic insulator\u003c\/strong\u003e offers strength and excellent heat control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1486\" data-end=\"1489\"\u003e\n\u003ch3 data-start=\"1491\" data-end=\"1528\"\u003e\u003cstrong data-start=\"1495\" data-end=\"1526\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1531\" data-end=\"1646\"\u003eUsed across multiple \u003cstrong data-start=\"1552\" data-end=\"1585\"\u003eMercury and Mariner outboards\u003c\/strong\u003e and \u003cstrong data-start=\"1590\" data-end=\"1613\"\u003eMerCruiser inboards\u003c\/strong\u003e that require NGK BPR6EFS plugs\u003c\/li\u003e\n\u003cli data-start=\"1649\" data-end=\"1731\"\u003eCommon on fishing boats, cruisers, and performance rigs where reliability is key\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1733\" data-end=\"1736\"\u003e\n\u003ch3 data-start=\"1738\" data-end=\"1780\"\u003e\u003cstrong data-start=\"1742\" data-end=\"1778\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1781\" data-end=\"2084\"\u003eA new spark plug can transform how your engine feels. The \u003cstrong data-start=\"1839\" data-end=\"1850\"\u003e816336Q\u003c\/strong\u003e ensures each cylinder fires cleanly, reducing misfires and improving fuel economy. The \u003cstrong data-start=\"1938\" data-end=\"1953\"\u003ecopper core\u003c\/strong\u003e design helps move heat away from the firing tip, extending plug life and maintaining proper temperature across a wide RPM range.\u003c\/p\u003e\n\u003cp data-start=\"2086\" data-end=\"2354\"\u003eThe plug’s \u003cstrong data-start=\"2097\" data-end=\"2125\"\u003eribbed ceramic insulator\u003c\/strong\u003e prevents flash-over and misfire, while the triple-sealed construction keeps moisture and combustion gases out. You’ll get easier starts, steady throttle response, and stronger acceleration — even after long hours on the water.\u003c\/p\u003e\n\u003chr data-start=\"2356\" data-end=\"2359\"\u003e\n\u003ch3 data-start=\"2361\" data-end=\"2382\"\u003e\u003cstrong data-start=\"2365\" data-end=\"2380\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2383\" data-end=\"2674\"\u003eUsing the correct spark plug isn’t optional; it’s critical. Mercury’s OEM-approved NGK plugs are matched exactly to your engine’s compression and ignition system. Aftermarket or “equivalent” plugs may have different heat ranges or materials that can cause pre-ignition or poor performance.\u003c\/p\u003e\n\u003cp data-start=\"2676\" data-end=\"2947\"\u003eWith a \u003cstrong data-start=\"2683\" data-end=\"2715\"\u003egenuine Quicksilver NGK plug\u003c\/strong\u003e, you’re installing the same part your engine was designed to run on — tested in marine conditions and trusted by professionals worldwide. It’s an inexpensive tune-up item that protects your motor and helps it perform at its best.\u003c\/p\u003e\n\u003chr data-start=\"2949\" data-end=\"2952\"\u003e\n\u003ch3 data-start=\"2954\" data-end=\"2967\"\u003e\u003cstrong data-start=\"2958\" data-end=\"2965\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2968\" data-end=\"3182\"\u003e\u003cstrong data-start=\"2968\" data-end=\"3034\"\u003eQ1: What engines use the Quicksilver 816336Q NGK BPR6EFS plug?\u003c\/strong\u003e\u003cbr data-start=\"3034\" data-end=\"3037\"\u003eA: It fits \u003cstrong data-start=\"3048\" data-end=\"3081\"\u003eMercury and Mariner outboards\u003c\/strong\u003e and some \u003cstrong data-start=\"3091\" data-end=\"3114\"\u003eMerCruiser inboards\u003c\/strong\u003e that call for NGK BPR6EFS. Always confirm in your owner’s manual.\u003c\/p\u003e\n\u003cp data-start=\"3184\" data-end=\"3313\"\u003e\u003cstrong data-start=\"3184\" data-end=\"3213\"\u003eQ2: Are these pre-gapped?\u003c\/strong\u003e\u003cbr data-start=\"3213\" data-end=\"3216\"\u003eA: Yes, they come \u003cstrong data-start=\"3234\" data-end=\"3265\"\u003epre-gapped to Mercury specs\u003c\/strong\u003e, but it’s best to verify before installation.\u003c\/p\u003e\n\u003cp data-start=\"3315\" data-end=\"3501\"\u003e\u003cstrong data-start=\"3315\" data-end=\"3372\"\u003eQ3: What makes these different from automotive plugs?\u003c\/strong\u003e\u003cbr data-start=\"3372\" data-end=\"3375\"\u003eA: Marine plugs are built to resist corrosion and operate under heavier loads and cooler engine temps typical of marine use.\u003c\/p\u003e\n\u003cp data-start=\"3503\" data-end=\"3639\"\u003e\u003cstrong data-start=\"3503\" data-end=\"3546\"\u003eQ4: Should I replace all plugs at once?\u003c\/strong\u003e\u003cbr data-start=\"3546\" data-end=\"3549\"\u003eA: Yes. Replacing all plugs together ensures balanced performance across every cylinder.\u003c\/p\u003e\n\u003cp data-start=\"3641\" data-end=\"3793\"\u003e\u003cstrong data-start=\"3641\" data-end=\"3687\"\u003eQ5: How often should I change spark plugs?\u003c\/strong\u003e\u003cbr data-start=\"3687\" data-end=\"3690\"\u003eA: Inspect yearly and replace every 100 hours or sooner if you notice rough running or poor starting.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46932977680675,"sku":"PV463625","price":4.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/IMG_7866.jpg?v=1747682522","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-ngk-bpr6efs-10-816336q","provider":"PartsVu","version":"1.0","type":"link"}