{"product_id":"mercury-mercruiser-spark-plug-wire-kit-blue-fits-gm-hi-perf-v-8-454-502-540-572-cid-engines-with-thunderbolt-iv-ignition-84-847701q7","title":"Mercury – Quicksilver Blue Wire Spark Plug Wire Kit | V8 High-Performance Ignition System | Marine Grade | 847701Q7","description":"\u003cp data-start=\"0\" data-end=\"121\"\u003e\u003cstrong data-start=\"0\" data-end=\"119\"\u003eMercury – Quicksilver Blue Wire Spark Plug Wire Kit | V8 High-Performance Ignition System | Marine Grade | 847701Q7\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"123\" data-end=\"126\"\u003e\n\u003ch3 data-start=\"128\" data-end=\"146\"\u003e\u003cstrong data-start=\"132\" data-end=\"144\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"147\" data-end=\"646\"\u003eThe \u003cstrong data-start=\"151\" data-end=\"205\"\u003eQuicksilver 847701Q7 Blue Wire Spark Plug Wire Kit\u003c\/strong\u003e is designed for \u003cstrong data-start=\"222\" data-end=\"264\"\u003eV8 MerCruiser high-performance engines\u003c\/strong\u003e—including 454, 502, 540, and 572 CID models equipped with \u003cstrong data-start=\"323\" data-end=\"375\"\u003eThunderbolt IV ignition systems (1990 and newer)\u003c\/strong\u003e. Built by \u003cstrong data-start=\"386\" data-end=\"404\"\u003eMercury Marine\u003c\/strong\u003e, this OEM wire set delivers strong, consistent spark even under the toughest conditions. Each wire is factory-cut to exact length and fitted with high-quality boots to ensure a clean, secure connection for maximum performance on the water.\u003c\/p\u003e\n\u003chr data-start=\"648\" data-end=\"651\"\u003e\n\u003ch3 data-start=\"653\" data-end=\"675\"\u003e\u003cstrong data-start=\"657\" data-end=\"673\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"678\" data-end=\"795\"\u003e\n\u003cstrong data-start=\"678\" data-end=\"690\"\u003ePurpose:\u003c\/strong\u003e Delivers steady, reliable spark to all cylinders for consistent ignition and clean engine performance.\u003c\/li\u003e\n\u003cli data-start=\"798\" data-end=\"911\"\u003e\n\u003cstrong data-start=\"798\" data-end=\"811\"\u003eMaterial:\u003c\/strong\u003e Made from marine-grade silicone that resists heat, cracking, and corrosion in salt or freshwater.\u003c\/li\u003e\n\u003cli data-start=\"914\" data-end=\"1022\"\u003e\n\u003cstrong data-start=\"914\" data-end=\"930\"\u003ePerformance:\u003c\/strong\u003e Maintains high spark voltage for crisp acceleration and smooth running at all RPM ranges.\u003c\/li\u003e\n\u003cli data-start=\"1025\" data-end=\"1118\"\u003e\n\u003cstrong data-start=\"1025\" data-end=\"1036\"\u003eDesign:\u003c\/strong\u003e Pre-measured blue wires with snug-fitting boots tailored to each plug location.\u003c\/li\u003e\n\u003cli data-start=\"1121\" data-end=\"1212\"\u003e\n\u003cstrong data-start=\"1121\" data-end=\"1145\"\u003eEase of Use\/Install:\u003c\/strong\u003e Plug-and-play setup—no cutting, trimming, or adjustments needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1214\" data-end=\"1217\"\u003e\n\u003ch3 data-start=\"1219\" data-end=\"1242\"\u003e\u003cstrong data-start=\"1223\" data-end=\"1240\"\u003eCompatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1245\" data-end=\"1259\"\u003e\u003cstrong data-start=\"1245\" data-end=\"1257\"\u003eEngines:\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1264\" data-end=\"1322\"\u003eMerCruiser High-Performance V8s (454, 502, 540, 572 CID)\u003c\/li\u003e\n\u003cli data-start=\"1327\" data-end=\"1380\"\u003eWith Thunderbolt IV Ignition Systems (1990 \u0026amp; Newer)\u003c\/li\u003e\n\u003cli data-start=\"1383\" data-end=\"1434\"\u003e\n\u003cstrong data-start=\"1383\" data-end=\"1392\"\u003eType:\u003c\/strong\u003e Inboard High-Performance Marine Engines\u003c\/li\u003e\n\u003cli data-start=\"1437\" data-end=\"1528\"\u003e\n\u003cstrong data-start=\"1437\" data-end=\"1454\"\u003eCommon Boats:\u003c\/strong\u003e Offshore Rigs | Racing Boats | Sport Cruisers | Classic Muscle Inboards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1530\" data-end=\"1533\"\u003e\n\u003ch3 data-start=\"1535\" data-end=\"1578\"\u003e\u003cstrong data-start=\"1539\" data-end=\"1576\"\u003ePerformance \u0026amp; Real-World Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1579\" data-end=\"1953\"\u003eThis Quicksilver wire set gives your big-block V8 the spark it needs to stay responsive and reliable under load. You’ll notice faster starts, steadier idle, and strong, smooth pull across the power band. The marine-grade insulation handles extreme heat and moisture without losing conductivity, keeping your ignition system dependable no matter how hard you run your boat.\u003c\/p\u003e\n\u003chr data-start=\"1955\" data-end=\"1958\"\u003e\n\u003ch3 data-start=\"1960\" data-end=\"1984\"\u003e\u003cstrong data-start=\"1964\" data-end=\"1982\"\u003eWhy Choose OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1985\" data-end=\"2460\"\u003eWith \u003cstrong data-start=\"1990\" data-end=\"2018\"\u003eMercury Marine OEM parts\u003c\/strong\u003e, you’re getting components designed specifically for your engine—not a one-size-fits-all aftermarket substitute. OEM wires are tested for voltage consistency, heat tolerance, and corrosion resistance to handle real marine conditions. Aftermarket sets can fall short on length or insulation quality, which can cause misfires or reduced performance. OEM ensures perfect fit, lasting durability, and peace of mind every time you turn the key.\u003c\/p\u003e\n\u003chr data-start=\"2462\" data-end=\"2465\"\u003e\n\u003ch3 data-start=\"2467\" data-end=\"2480\"\u003e\u003cstrong data-start=\"2471\" data-end=\"2478\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2481\" data-end=\"2643\"\u003e\u003cstrong data-start=\"2481\" data-end=\"2525\"\u003eQ1: What engines does this wire kit fit?\u003c\/strong\u003e\u003cbr data-start=\"2525\" data-end=\"2528\"\u003eIt fits V8 MerCruiser high-performance engines (454, 502, 540, and 572 CID) with Thunderbolt IV ignition systems.\u003c\/p\u003e\n\u003cp data-start=\"2645\" data-end=\"2787\"\u003e\u003cstrong data-start=\"2645\" data-end=\"2698\"\u003eQ2: Are these wires pre-cut and ready to install?\u003c\/strong\u003e\u003cbr data-start=\"2698\" data-end=\"2701\"\u003eYes, they come factory-cut to length with pre-installed boots for quick, easy setup.\u003c\/p\u003e\n\u003cp data-start=\"2789\" data-end=\"2928\"\u003e\u003cstrong data-start=\"2789\" data-end=\"2836\"\u003eQ3: Can I use them in saltwater conditions?\u003c\/strong\u003e\u003cbr data-start=\"2836\" data-end=\"2839\"\u003eAbsolutely. The marine-grade silicone insulation resists corrosion and moisture damage.\u003c\/p\u003e\n\u003cp data-start=\"2930\" data-end=\"3080\"\u003e\u003cstrong data-start=\"2930\" data-end=\"2980\"\u003eQ4: Will this improve my engine’s performance?\u003c\/strong\u003e\u003cbr data-start=\"2980\" data-end=\"2983\"\u003eYes. Consistent spark helps your motor start faster, idle smoother, and run cleaner under load.\u003c\/p\u003e\n\u003cp data-start=\"3082\" data-end=\"3180\"\u003e\u003cstrong data-start=\"3082\" data-end=\"3121\"\u003eQ5: How many wires come in the set?\u003c\/strong\u003e\u003cbr data-start=\"3121\" data-end=\"3124\"\u003eIt’s a full eight-wire kit—one wire for each cylinder.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936060854563,"sku":"84-847701Q7","price":101.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/847701q7_02.jpg?v=1761577365","url":"https:\/\/partsvu.com\/en-mx\/products\/mercury-mercruiser-spark-plug-wire-kit-blue-fits-gm-hi-perf-v-8-454-502-540-572-cid-engines-with-thunderbolt-iv-ignition-84-847701q7","provider":"PartsVu","version":"1.0","type":"link"}