{"product_id":"mercury-cable-assy-black-84-821945a61","title":"Mercury – Quicksilver 821945A61 Black Spark Plug Wire Lead | Mercury \u0026 Mariner 30–300HP Outboards | 821945A61","description":"\u003cp data-start=\"0\" data-end=\"115\"\u003e\u003cstrong data-start=\"0\" data-end=\"113\"\u003eMercury – Quicksilver 821945A61 Black Spark Plug Wire Lead | Mercury \u0026amp; Mariner 30–300HP Outboards | 821945A61\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"117\" data-end=\"120\"\u003e\n\u003ch3 data-start=\"122\" data-end=\"140\"\u003e\u003cstrong data-start=\"126\" data-end=\"138\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"141\" data-end=\"537\"\u003eGood spark equals good performance. The \u003cstrong data-start=\"181\" data-end=\"233\"\u003eQuicksilver 821945A61 Black Spark Plug Wire Lead\u003c\/strong\u003e ensures your \u003cstrong data-start=\"247\" data-end=\"278\"\u003eMercury or Mariner outboard\u003c\/strong\u003e fires clean and strong every time. Designed for \u003cstrong data-start=\"327\" data-end=\"383\"\u003e30–300HP 2-stroke EFI, carbureted, and jet outboards\u003c\/strong\u003e — including \u003cstrong data-start=\"396\" data-end=\"426\"\u003e90–120HP JetDrive\/SportJet\u003c\/strong\u003e models — this OEM lead delivers steady spark and lasting reliability, no matter how hard you run your motor.\u003c\/p\u003e\n\u003cp data-start=\"539\" data-end=\"780\"\u003eBuilt with factory-grade materials and precise connections, this single spark plug wire includes a plug boot on one end and a coil boot on the other. It’s a quick, direct-fit replacement that keeps your ignition system working at its best.\u003c\/p\u003e\n\u003chr data-start=\"782\" data-end=\"785\"\u003e\n\u003ch3 data-start=\"787\" data-end=\"809\"\u003e\u003cstrong data-start=\"791\" data-end=\"807\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"812\" data-end=\"919\"\u003e\n\u003cstrong data-start=\"812\" data-end=\"824\"\u003ePurpose:\u003c\/strong\u003e Replaces worn or damaged spark plug leads to restore consistent ignition and power delivery.\u003c\/li\u003e\n\u003cli data-start=\"922\" data-end=\"1088\"\u003e\n\u003cstrong data-start=\"922\" data-end=\"934\"\u003eFitment:\u003c\/strong\u003e For \u003cstrong data-start=\"939\" data-end=\"1040\"\u003eMercury and Mariner 30–300HP (2-, 3-, and 4-cylinder) 2-stroke EFI, carbureted, and jet outboards\u003c\/strong\u003e, plus \u003cstrong data-start=\"1047\" data-end=\"1085\"\u003e90–120HP JetDrive\/SportJet engines\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1091\" data-end=\"1190\"\u003e\n\u003cstrong data-start=\"1091\" data-end=\"1102\"\u003eDesign:\u003c\/strong\u003e \u003cstrong data-start=\"1103\" data-end=\"1123\"\u003eSingle wire lead\u003c\/strong\u003e with plug boot and coil boot pre-installed for easy replacement.\u003c\/li\u003e\n\u003cli data-start=\"1193\" data-end=\"1276\"\u003e\n\u003cstrong data-start=\"1193\" data-end=\"1209\"\u003ePerformance:\u003c\/strong\u003e Provides strong, clean spark transfer from the coil to the plug.\u003c\/li\u003e\n\u003cli data-start=\"1279\" data-end=\"1341\"\u003e\n\u003cstrong data-start=\"1279\" data-end=\"1295\"\u003eEase of Use:\u003c\/strong\u003e Installs quickly with \u003cstrong data-start=\"1318\" data-end=\"1338\"\u003ebasic hand tools\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1343\" data-end=\"1346\"\u003e\n\u003ch3 data-start=\"1348\" data-end=\"1385\"\u003e\u003cstrong data-start=\"1352\" data-end=\"1383\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1388\" data-end=\"1437\"\u003eMercury and Mariner 30–300HP 2-stroke outboards\u003c\/li\u003e\n\u003cli data-start=\"1440\" data-end=\"1489\"\u003eIncludes 90–120HP JetDrive and SportJet engines\u003c\/li\u003e\n\u003cli data-start=\"1492\" data-end=\"1554\"\u003eCommon on fishing boats, sport boats, and jet-powered setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1556\" data-end=\"1559\"\u003e\n\u003ch3 data-start=\"1561\" data-end=\"1603\"\u003e\u003cstrong data-start=\"1565\" data-end=\"1601\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1604\" data-end=\"1877\"\u003eThe \u003cstrong data-start=\"1608\" data-end=\"1637\"\u003e821945A61 spark plug wire\u003c\/strong\u003e restores reliable ignition performance by ensuring steady voltage flow to each cylinder. Old or cracked wires can cause weak spark, misfires, or hard starts — this replacement brings your outboard’s ignition system back to full strength.\u003c\/p\u003e\n\u003cp data-start=\"1879\" data-end=\"2100\"\u003eMade from heat- and moisture-resistant materials, it stands up to salt, vibration, and long hours on the water. It’s one of those small but vital parts that keeps your engine firing smooth and efficient all season long.\u003c\/p\u003e\n\u003chr data-start=\"2102\" data-end=\"2105\"\u003e\n\u003ch3 data-start=\"2107\" data-end=\"2128\"\u003e\u003cstrong data-start=\"2111\" data-end=\"2126\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2129\" data-end=\"2376\"\u003eMercury’s OEM ignition components are designed for exact fit, proper resistance, and long life. Aftermarket wires may look similar but often lack the insulation quality or connector precision needed for reliable performance in marine conditions.\u003c\/p\u003e\n\u003cp data-start=\"2378\" data-end=\"2543\"\u003eA \u003cstrong data-start=\"2380\" data-end=\"2413\"\u003egenuine Quicksilver wire lead\u003c\/strong\u003e ensures the perfect fit and conductivity your ignition system was designed for — built and tested to Mercury’s exact standards.\u003c\/p\u003e\n\u003chr data-start=\"2545\" data-end=\"2548\"\u003e\n\u003ch3 data-start=\"2550\" data-end=\"2563\"\u003e\u003cstrong data-start=\"2554\" data-end=\"2561\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2564\" data-end=\"2769\"\u003e\u003cstrong data-start=\"2564\" data-end=\"2631\"\u003eQ1: What engines fit the Quicksilver 821945A61 spark plug wire?\u003c\/strong\u003e\u003cbr data-start=\"2631\" data-end=\"2634\"\u003eA: It fits \u003cstrong data-start=\"2645\" data-end=\"2721\"\u003eMercury and Mariner 30–300HP 2-stroke EFI, carbureted, and jet outboards\u003c\/strong\u003e, plus \u003cstrong data-start=\"2728\" data-end=\"2766\"\u003e90–120HP JetDrive\/SportJet engines\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2771\" data-end=\"2886\"\u003e\u003cstrong data-start=\"2771\" data-end=\"2810\"\u003eQ2: Is this a single wire or a set?\u003c\/strong\u003e\u003cbr data-start=\"2810\" data-end=\"2813\"\u003eA: It’s \u003cstrong data-start=\"2821\" data-end=\"2849\"\u003eone individual wire lead\u003c\/strong\u003e with boots installed on both ends.\u003c\/p\u003e\n\u003cp data-start=\"2888\" data-end=\"3054\"\u003e\u003cstrong data-start=\"2888\" data-end=\"2937\"\u003eQ3: How do I know if my wire needs replacing?\u003c\/strong\u003e\u003cbr data-start=\"2937\" data-end=\"2940\"\u003eA: If you notice poor starting, misfires, or visible cracking or corrosion on the wire, it’s time to replace it.\u003c\/p\u003e\n\u003cp data-start=\"3056\" data-end=\"3160\"\u003e\u003cstrong data-start=\"3056\" data-end=\"3088\"\u003eQ4: Can I install it myself?\u003c\/strong\u003e\u003cbr data-start=\"3088\" data-end=\"3091\"\u003eA: Yes. It’s a simple plug-and-play replacement using common tools.\u003c\/p\u003e\n\u003cp data-start=\"3162\" data-end=\"3332\"\u003e\u003cstrong data-start=\"3162\" data-end=\"3201\"\u003eQ5: Why OEM instead of aftermarket?\u003c\/strong\u003e\u003cbr data-start=\"3201\" data-end=\"3204\"\u003eA: OEM wires match Mercury’s factory resistance specs and use high-quality insulation to handle heat, vibration, and moisture.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":45626569818403,"sku":"84-821945A61","price":14.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/821945A61_MAIN-1.jpg?v=1760631221","url":"https:\/\/partsvu.com\/en-mx\/products\/mercury-cable-assy-black-84-821945a61","provider":"PartsVu","version":"1.0","type":"link"}