{"product_id":"mercury-mercruiser-spark-plug-wire-kit-fits-gm-v-8-305-350-cid-engines-with-thunderbolt-iv-and-v-ignition-84-816761q17","title":"Mercury – Quicksilver 816761Q17 Spark Plug Wire Kit | V8 GM MerCruiser (LH) Engines (305 \u0026 350 CID) | Thunderbolt IV Ignition | 816761Q17","description":"\u003cp data-start=\"0\" data-end=\"143\"\u003e\u003cstrong data-start=\"0\" data-end=\"141\"\u003eMercury – Quicksilver 816761Q17 Spark Plug Wire Kit | V8 GM MerCruiser (LH) Engines (305 \u0026amp; 350 CID) | Thunderbolt IV Ignition | 816761Q17\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"145\" data-end=\"148\"\u003e\n\u003ch3 data-start=\"150\" data-end=\"168\"\u003e\u003cstrong data-start=\"154\" data-end=\"166\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"169\" data-end=\"472\"\u003eYour engine’s spark system is its heartbeat — and strong, steady spark is key to dependable power. The \u003cstrong data-start=\"272\" data-end=\"317\"\u003eQuicksilver 816761Q17 Spark Plug Wire Kit\u003c\/strong\u003e keeps that spark strong in \u003cstrong data-start=\"345\" data-end=\"407\"\u003eV8 left-hand rotation MerCruiser engines (305 and 350 CID)\u003c\/strong\u003e equipped with \u003cstrong data-start=\"422\" data-end=\"469\"\u003eThunderbolt IV ignition systems (1993–2003)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"474\" data-end=\"807\"\u003eThis OEM kit is built for the realities of boating: salt air, vibration, and heat. Each wire is the right length for your setup, with molded boots that lock securely onto the plugs for a tight, moisture-resistant fit. Swap them in and you’ll instantly restore smooth idle, clean acceleration, and confident ignition on every start.\u003c\/p\u003e\n\u003chr data-start=\"809\" data-end=\"812\"\u003e\n\u003ch3 data-start=\"814\" data-end=\"836\"\u003e\u003cstrong data-start=\"818\" data-end=\"834\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"839\" data-end=\"943\"\u003e\n\u003cstrong data-start=\"839\" data-end=\"851\"\u003ePurpose:\u003c\/strong\u003e Replaces worn or cracked wires to restore full ignition performance and prevent misfires.\u003c\/li\u003e\n\u003cli data-start=\"946\" data-end=\"1093\"\u003e\n\u003cstrong data-start=\"946\" data-end=\"958\"\u003eFitment:\u003c\/strong\u003e For \u003cstrong data-start=\"963\" data-end=\"1037\"\u003eV8 LH (left-hand rotation) GM-based MerCruiser engines (305 \u0026amp; 350 CID)\u003c\/strong\u003e with \u003cstrong data-start=\"1043\" data-end=\"1090\"\u003eThunderbolt IV ignition systems (1993–2003)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1096\" data-end=\"1206\"\u003e\n\u003cstrong data-start=\"1096\" data-end=\"1113\"\u003eKit Contents:\u003c\/strong\u003e Complete \u003cstrong data-start=\"1123\" data-end=\"1150\"\u003eset of spark plug wires\u003c\/strong\u003e with molded plug-end boots for easy, snug connection.\u003c\/li\u003e\n\u003cli data-start=\"1209\" data-end=\"1296\"\u003e\n\u003cstrong data-start=\"1209\" data-end=\"1220\"\u003eDesign:\u003c\/strong\u003e Each wire is \u003cstrong data-start=\"1234\" data-end=\"1252\"\u003efactory-length\u003c\/strong\u003e for proper routing and tidy installation.\u003c\/li\u003e\n\u003cli data-start=\"1299\" data-end=\"1412\"\u003e\n\u003cstrong data-start=\"1299\" data-end=\"1321\"\u003eMarine Durability:\u003c\/strong\u003e Built for \u003cstrong data-start=\"1332\" data-end=\"1376\"\u003eheat, moisture, and vibration resistance\u003c\/strong\u003e in demanding marine environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1414\" data-end=\"1417\"\u003e\n\u003ch3 data-start=\"1419\" data-end=\"1456\"\u003e\u003cstrong data-start=\"1423\" data-end=\"1454\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1459\" data-end=\"1516\"\u003eGM-based V8 MerCruiser LH engines (305 CID and 350 CID)\u003c\/li\u003e\n\u003cli data-start=\"1519\" data-end=\"1564\"\u003eThunderbolt IV ignition systems (1993–2003)\u003c\/li\u003e\n\u003cli data-start=\"1567\" data-end=\"1636\"\u003eCommon on inboard\/outboard cruisers, tow boats, and sport runabouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1638\" data-end=\"1641\"\u003e\n\u003ch3 data-start=\"1643\" data-end=\"1685\"\u003e\u003cstrong data-start=\"1647\" data-end=\"1683\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1686\" data-end=\"1942\"\u003eThe \u003cstrong data-start=\"1690\" data-end=\"1703\"\u003e816761Q17\u003c\/strong\u003e wire set helps your ignition fire cleaner and stronger, giving smoother idle, quicker starts, and a steady pull at any speed. Each wire’s low-resistance core maintains strong spark energy for complete combustion and efficient fuel burn.\u003c\/p\u003e\n\u003cp data-start=\"1944\" data-end=\"2233\"\u003eThe heavy-duty insulation won’t crack under heat or stiffen over time, while the snug-fitting boots keep out water and corrosion. Installation is simple — replace one wire at a time to keep your firing order intact — and once fitted, you’ll notice the engine running quieter and cleaner.\u003c\/p\u003e\n\u003chr data-start=\"2235\" data-end=\"2238\"\u003e\n\u003ch3 data-start=\"2240\" data-end=\"2261\"\u003e\u003cstrong data-start=\"2244\" data-end=\"2259\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2262\" data-end=\"2560\"\u003eMercury’s OEM plug wires are built specifically for marine use — not modified automotive parts. Every Quicksilver wire is tested for correct resistance, flexibility, and temperature tolerance. Aftermarket options often miss on length or insulation quality, leading to early failure or weak spark.\u003c\/p\u003e\n\u003cp data-start=\"2562\" data-end=\"2792\"\u003eA \u003cstrong data-start=\"2564\" data-end=\"2596\"\u003egenuine Quicksilver wire kit\u003c\/strong\u003e means exact fit, consistent performance, and the peace of mind that comes with Mercury’s proven design. It’s the same ignition quality your engine had when it left the factory — just new again.\u003c\/p\u003e\n\u003chr data-start=\"2794\" data-end=\"2797\"\u003e\n\u003ch3 data-start=\"2799\" data-end=\"2812\"\u003e\u003cstrong data-start=\"2803\" data-end=\"2810\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2813\" data-end=\"2991\"\u003e\u003cstrong data-start=\"2813\" data-end=\"2868\"\u003eQ1: What engines use the Quicksilver 816761Q17 kit?\u003c\/strong\u003e\u003cbr data-start=\"2868\" data-end=\"2871\"\u003eA: It fits \u003cstrong data-start=\"2882\" data-end=\"2935\"\u003eV8 LH GM-based MerCruiser engines (305 \u0026amp; 350 CID)\u003c\/strong\u003e with \u003cstrong data-start=\"2941\" data-end=\"2988\"\u003eThunderbolt IV ignition systems (1993–2003)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2993\" data-end=\"3137\"\u003e\u003cstrong data-start=\"2993\" data-end=\"3028\"\u003eQ2: What’s included in the kit?\u003c\/strong\u003e\u003cbr data-start=\"3028\" data-end=\"3031\"\u003eA: A complete \u003cstrong data-start=\"3045\" data-end=\"3072\"\u003eset of spark plug wires\u003c\/strong\u003e, each with molded plug boots for a precise, weather-tight fit.\u003c\/p\u003e\n\u003cp data-start=\"3139\" data-end=\"3269\"\u003e\u003cstrong data-start=\"3139\" data-end=\"3171\"\u003eQ3: Can I install it myself?\u003c\/strong\u003e\u003cbr data-start=\"3171\" data-end=\"3174\"\u003eA: Yes. Replace one wire at a time to maintain firing order — it’s a straightforward DIY job.\u003c\/p\u003e\n\u003cp data-start=\"3271\" data-end=\"3432\"\u003e\u003cstrong data-start=\"3271\" data-end=\"3311\"\u003eQ4: Are these wires saltwater-ready?\u003c\/strong\u003e\u003cbr data-start=\"3311\" data-end=\"3314\"\u003eA: Absolutely. The materials and terminals are corrosion-resistant and built to perform in both salt and freshwater.\u003c\/p\u003e\n\u003cp data-start=\"3434\" data-end=\"3602\"\u003e\u003cstrong data-start=\"3434\" data-end=\"3467\"\u003eQ5: Why OEM over aftermarket?\u003c\/strong\u003e\u003cbr data-start=\"3467\" data-end=\"3470\"\u003eA: OEM wires guarantee the right length, correct resistance, and long-term marine durability that aftermarket options can’t match.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46936069505315,"sku":"84-816761Q17","price":76.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/816761q17.jpg?v=1761577091","url":"https:\/\/partsvu.com\/en-au\/products\/mercury-mercruiser-spark-plug-wire-kit-fits-gm-v-8-305-350-cid-engines-with-thunderbolt-iv-and-v-ignition-84-816761q17","provider":"PartsVu","version":"1.0","type":"link"}