{"product_id":"mercury-plug-lfr4a-e-4-33-898829001","title":"Mercury – NGK LFR4A-E Standard Spark Plug | Ignition Series | Nickel Alloy | 8M0157328","description":"\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – NGK LFR4A-E Standard Spark Plug | Ignition Series | Nickel Alloy | 8M0157328\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOverview\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThere’s something reassuring\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e about the instant snap of a clean ignition. It’s that moment when you turn the key, hear the engine catch, and feel the whole boat come alive beneath you. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eA good spark plug is a small part of that moment, but any boater who’s spent enough time on the water knows how much \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003edepends\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e on it. The Mercury Marine part 8M0157328 NGK LFR4A-E Spark Plug is one of those little essentials that quietly earns your trust. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhen your engine lights up smooth and \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003estrong\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e — whether you’re heading out before sunrise or making a last-minute run across the lake — you’ll know this plug is doing \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eexactly\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e what it should.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eNGK V-Power design with a precision-cut “V” center electrode.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eNickel-alloy construction for consistent ignition performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePure alumina silicate ceramic insulator for better heat transfer and durability.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eRibbed suppressor seal to reduce misfire and prevent flashover.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eTriple-sealed design for stronger resistance to fouling and leakage.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePre-gapped to engine-manufacturer specifications (always verify before installation).\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFits select Mercury engines requiring NGK LFR4A-E spark plugs.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCommon on fishing boats, pontoons, bass boats, aluminum rigs, and runabouts.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eSuitable for both mid-range and higher-output four-stroke platforms.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIdeal for engines that see long idle times, trolling hours, or frequent start-stop cycling.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhen you install this spark plug, the first difference you’ll notice is how cleanly the engine fires. The V-shaped electrode is engineered to direct the spark right to the hottest edge of the tip, which creates a crisp ignition that helps the engine breathe easier. That translates to smoother idle, better throttle response, and more dependable performance when you’re shifting between slow maneuvering and wide-open stretches.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThe ceramic insulator \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eis built\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e to handle real marine heat — the kind you get after a long run in the summer or when you’re pushing the engine hard against current or chop. It also resists breakage, which matters when you’re working in tight spots under the cowling. The triple-seal design keeps moisture from creeping in, even when the weather turns wet or you’re dealing with heavy spray.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIns\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003etallation is easy, even for boaters who like to handle their own tune-ups. With a proper spark plug socket and a gentle hand, you can swap old plugs for fresh ones in minutes. Once installed, you’ll feel the difference right awa\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ey…t\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ehat tight, responsive ignition that makes the whole boat feel more alive.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhy Buy OEM\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWith ignition parts, precision matters. Mer\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ecury Marine parts \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eare engineered\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e to meet exact heat ranges, electrode length, and ignition timing requirements for your specific engine. Aftermarket substitutes might look similar, but subtle differences in material or construction can lead to fouling, poor idle, and even long-term engine damage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eUsi\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eng the genuine spark plug listed in your owner’s manual means you’re giving your engine exactly what it was built for — not something that “should work.” OEM parts deliver predictable longevity, easier starts, and more consistent running throughout the season. It’s the smart, practical choice for any boater who wants to avoid headaches on the water.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFAQ\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ1: Which Mercury engines does the NGK LFR4A-E fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It fits select Mercury engines that specify this exact plug. Checking your manual or current plug is the best confirmation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: What makes this plug better than aftermarket versions?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Its construction, heat management, and electrode design match Mercury’s ignition requirements perfectly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How do I know it’s the correct replacement?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Use only the spark plug listed in your engine’s owner’s manual. If it calls for LFR4A-E, this is the correct replacement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Is it suitable for both saltwater and freshwater?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Absolutely. Its corrosion-resistant plating and sealed design handle both environments well.\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 — with the \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eright\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e socket and a gentle touch, most boaters can replace spark plugs in minutes.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46932974829859,"sku":"PV496054","price":13.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/IMG_7834.jpg?v=1747340286","url":"https:\/\/partsvu.com\/fr\/products\/mercury-plug-lfr4a-e-4-33-898829001","provider":"PartsVu","version":"1.0","type":"link"}