{"product_id":"mercury-mercruiser-spark-plug-wire-kit-fits-black-scorpion-tow-sports-with-delco-hei-ignition-84-816608q78","title":"Mercury – Quicksilver 816608Q78 Red Wire Spark Plug Wire Kit | MerCruiser Black Scorpion Tow Sports Engines | Delco HEI Ignition | 816608Q78","description":"\u003cp data-start=\"0\" data-end=\"146\"\u003e\u003cstrong data-start=\"0\" data-end=\"144\"\u003eMercury – Quicksilver 816608Q78 Red Wire Spark Plug Wire Kit | MerCruiser Black Scorpion Tow Sports Engines | Delco HEI Ignition | 816608Q78\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"148\" data-end=\"151\"\u003e\n\u003ch3 data-start=\"153\" data-end=\"171\"\u003e\u003cstrong data-start=\"157\" data-end=\"169\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"172\" data-end=\"532\"\u003eThe \u003cstrong data-start=\"176\" data-end=\"230\"\u003eQuicksilver 816608Q78 Red Wire Spark Plug Wire Kit\u003c\/strong\u003e keeps your \u003cstrong data-start=\"242\" data-end=\"289\"\u003eMerCruiser Black Scorpion tow-sports engine\u003c\/strong\u003e firing strong and running clean. Built for \u003cstrong data-start=\"333\" data-end=\"407\"\u003eV8 GM-based marine engines with Delco HEI ignition systems (1997–1998)\u003c\/strong\u003e, this OEM wire set delivers a sharp, reliable spark and the durability you need for hard-pulling performance on the water.\u003c\/p\u003e\n\u003cp data-start=\"534\" data-end=\"803\"\u003eEach wire is precision-cut to the correct length, with pre-fitted boots that snap into place easily. The bright red jacket isn’t just for looks — it’s made from high-temp, marine-grade material that holds up against heat, vibration, and moisture, season after season.\u003c\/p\u003e\n\u003chr data-start=\"805\" data-end=\"808\"\u003e\n\u003ch3 data-start=\"810\" data-end=\"832\"\u003e\u003cstrong data-start=\"814\" data-end=\"830\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"835\" data-end=\"942\"\u003e\n\u003cstrong data-start=\"835\" data-end=\"847\"\u003ePurpose:\u003c\/strong\u003e Replaces worn or corroded spark plug wires for stronger ignition and consistent performance.\u003c\/li\u003e\n\u003cli data-start=\"945\" data-end=\"1063\"\u003e\n\u003cstrong data-start=\"945\" data-end=\"957\"\u003eFitment:\u003c\/strong\u003e For \u003cstrong data-start=\"962\" data-end=\"1023\"\u003eV8 GM-based MerCruiser Black Scorpion engines (1997–1998)\u003c\/strong\u003e using \u003cstrong data-start=\"1030\" data-end=\"1060\"\u003eDelco HEI ignition systems\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1066\" data-end=\"1182\"\u003e\n\u003cstrong data-start=\"1066\" data-end=\"1083\"\u003eKit Contents:\u003c\/strong\u003e Includes a \u003cstrong data-start=\"1095\" data-end=\"1131\"\u003ecomplete set of 8 red plug wires\u003c\/strong\u003e with pre-installed boots for quick installation.\u003c\/li\u003e\n\u003cli data-start=\"1185\" data-end=\"1304\"\u003e\n\u003cstrong data-start=\"1185\" data-end=\"1196\"\u003eDesign:\u003c\/strong\u003e Each wire is \u003cstrong data-start=\"1210\" data-end=\"1227\"\u003ecustom-length\u003c\/strong\u003e to fit cleanly and reach the correct plug without tension or excess slack.\u003c\/li\u003e\n\u003cli data-start=\"1307\" data-end=\"1433\"\u003e\n\u003cstrong data-start=\"1307\" data-end=\"1329\"\u003eMarine Durability:\u003c\/strong\u003e Built for \u003cstrong data-start=\"1340\" data-end=\"1407\"\u003eefficiency, endurance, and resistance to heat and salt exposure\u003c\/strong\u003e in marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1435\" data-end=\"1438\"\u003e\n\u003ch3 data-start=\"1440\" data-end=\"1477\"\u003e\u003cstrong data-start=\"1444\" data-end=\"1475\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1480\" data-end=\"1551\"\u003eMerCruiser Black Scorpion tow-sports engines (V8 GM-based, 1997–1998)\u003c\/li\u003e\n\u003cli data-start=\"1554\" data-end=\"1582\"\u003eDelco HEI ignition systems\u003c\/li\u003e\n\u003cli data-start=\"1585\" data-end=\"1664\"\u003eCommonly used in tournament ski boats, wake boats, and high-torque tow setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1666\" data-end=\"1669\"\u003e\n\u003ch3 data-start=\"1671\" data-end=\"1713\"\u003e\u003cstrong data-start=\"1675\" data-end=\"1711\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1714\" data-end=\"2038\"\u003eIf your ignition feels weak or your idle’s gotten rough, worn plug wires could be the reason. The \u003cstrong data-start=\"1812\" data-end=\"1829\"\u003e816608Q78 kit\u003c\/strong\u003e brings back crisp spark delivery and steady firing across all eight cylinders. Each wire’s low-resistance core ensures full voltage transfer for better combustion, quicker starts, and smoother acceleration.\u003c\/p\u003e\n\u003cp data-start=\"2040\" data-end=\"2338\"\u003eThese wires are tough enough for repeated hot starts, long idle sessions, and hours under load. The marine-grade insulation resists cracking and corrosion, while the snug-fitting boots help keep moisture out. The red jacket gives your engine bay that clean, professional look that’s pure Mercury.\u003c\/p\u003e\n\u003chr data-start=\"2340\" data-end=\"2343\"\u003e\n\u003ch3 data-start=\"2345\" data-end=\"2366\"\u003e\u003cstrong data-start=\"2349\" data-end=\"2364\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2367\" data-end=\"2620\"\u003eWith ignition components, precision matters. Mercury’s OEM wires are designed specifically for their marine engines — not repurposed automotive sets. Each wire is tested for correct resistance, flexibility, and heat resistance to handle marine stress.\u003c\/p\u003e\n\u003cp data-start=\"2622\" data-end=\"2839\"\u003eAftermarket wire kits might be cheaper, but the fit and materials rarely hold up the same way. \u003cstrong data-start=\"2717\" data-end=\"2742\"\u003eQuicksilver OEM wires\u003c\/strong\u003e ensure the right spark, the right length, and the long-term reliability Mercury owners expect.\u003c\/p\u003e\n\u003chr data-start=\"2841\" data-end=\"2844\"\u003e\n\u003ch3 data-start=\"2846\" data-end=\"2859\"\u003e\u003cstrong data-start=\"2850\" data-end=\"2857\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2860\" data-end=\"3046\"\u003e\u003cstrong data-start=\"2860\" data-end=\"2915\"\u003eQ1: What engines fit the Quicksilver 816608Q78 kit?\u003c\/strong\u003e\u003cbr data-start=\"2915\" data-end=\"2918\"\u003eA: It’s made for \u003cstrong data-start=\"2935\" data-end=\"3007\"\u003eV8 GM-based MerCruiser Black Scorpion tow-sports engines (1997–1998)\u003c\/strong\u003e with \u003cstrong data-start=\"3013\" data-end=\"3043\"\u003eDelco HEI ignition systems\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3048\" data-end=\"3171\"\u003e\u003cstrong data-start=\"3048\" data-end=\"3083\"\u003eQ2: What’s included in the kit?\u003c\/strong\u003e\u003cbr data-start=\"3083\" data-end=\"3086\"\u003eA: A \u003cstrong data-start=\"3091\" data-end=\"3137\"\u003ecomplete set of eight red spark plug wires\u003c\/strong\u003e, each with pre-installed boots.\u003c\/p\u003e\n\u003cp data-start=\"3173\" data-end=\"3348\"\u003e\u003cstrong data-start=\"3173\" data-end=\"3225\"\u003eQ3: Can these wires handle saltwater conditions?\u003c\/strong\u003e\u003cbr data-start=\"3225\" data-end=\"3228\"\u003eA: Yes. They’re built with corrosion-resistant terminals and marine-grade insulation for both salt and freshwater use.\u003c\/p\u003e\n\u003cp data-start=\"3350\" data-end=\"3482\"\u003e\u003cstrong data-start=\"3350\" data-end=\"3383\"\u003eQ4: Are they easy to install?\u003c\/strong\u003e\u003cbr data-start=\"3383\" data-end=\"3386\"\u003eA: Very. Each wire is cut to length — just swap them one by one to maintain your firing order.\u003c\/p\u003e\n\u003cp data-start=\"3484\" data-end=\"3680\"\u003e\u003cstrong data-start=\"3484\" data-end=\"3536\"\u003eQ5: Why choose OEM instead of aftermarket wires?\u003c\/strong\u003e\u003cbr data-start=\"3536\" data-end=\"3539\"\u003eA: OEM wires guarantee the right fit, better spark transfer, and durability tested for marine conditions — no guesswork, no early failures.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936071307555,"sku":"84-816608Q78","price":92.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/816608q78_Main.jpg?v=1760631223","url":"https:\/\/partsvu.com\/fr-ca\/products\/mercury-mercruiser-spark-plug-wire-kit-fits-black-scorpion-tow-sports-with-delco-hei-ignition-84-816608q78","provider":"PartsVu","version":"1.0","type":"link"}