{"product_id":"autolite-copper-spark-plug-646","title":"Autolite Copper Spark Plug – 646","description":"\u003cp data-start=\"111\" data-end=\"438\"\u003e\u003cstrong data-start=\"111\" data-end=\"127\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"127\" data-end=\"130\"\u003eThe Autolite 646 Copper Spark Plug is designed to deliver reliable ignition performance, quick engine starts, and consistent power for a wide range of gasoline engines. Its copper core center electrode improves heat transfer, helping maintain proper operating temperatures while reducing the risk of fouling.\u003c\/p\u003e\n\u003cp data-start=\"440\" data-end=\"843\"\u003eEngineered with high nickel alloy center and ground electrodes, this spark plug offers enhanced durability and longer service life. The high alumina multi-rib ceramic insulator provides excellent thermal conductivity and electrical insulation for dependable performance under demanding conditions. A corrosion-resistant nickel-plated shell helps protect against rust and ensures long-lasting durability.\u003c\/p\u003e\n\u003cp data-start=\"845\" data-end=\"1028\"\u003eAutolite copper spark plugs are built to meet the performance expectations of many vehicles and small engines, making them a dependable option for routine maintenance and replacement.\u003c\/p\u003e\n\u003cp data-start=\"1030\" data-end=\"1043\"\u003e\u003cstrong data-start=\"1030\" data-end=\"1043\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1045\" data-end=\"1415\"\u003e\n\u003cli data-section-id=\"50w2va\" data-start=\"1045\" data-end=\"1123\"\u003e\n\u003cp data-start=\"1047\" data-end=\"1123\"\u003eCopper core center electrode improves heat transfer and fouling resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13rtlpe\" data-start=\"1124\" data-end=\"1202\"\u003e\n\u003cp data-start=\"1126\" data-end=\"1202\"\u003eHigh nickel alloy center and ground electrodes help extend spark plug life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1qrwyl7\" data-start=\"1203\" data-end=\"1278\"\u003e\n\u003cp data-start=\"1205\" data-end=\"1278\"\u003eMulti-rib ceramic insulator improves strength and electrical insulation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9kvnor\" data-start=\"1279\" data-end=\"1349\"\u003e\n\u003cp data-start=\"1281\" data-end=\"1349\"\u003eNickel-plated shell helps resist corrosion and increase durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1hiih8k\" data-start=\"1350\" data-end=\"1415\"\u003e\n\u003cp data-start=\"1352\" data-end=\"1415\"\u003eDesigned for dependable ignition performance and quick starts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1417\" data-end=\"1444\"\u003e\u003cstrong data-start=\"1417\" data-end=\"1444\"\u003eProduct Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1446\" data-end=\"2228\"\u003e\n\u003cli data-section-id=\"q42sqa\" data-start=\"1446\" data-end=\"1466\"\u003e\n\u003cp data-start=\"1448\" data-end=\"1466\"\u003ePart number: 646\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"t1nkhe\" data-start=\"1467\" data-end=\"1486\"\u003e\n\u003cp data-start=\"1469\" data-end=\"1486\"\u003eBrand: Autolite\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9pckcv\" data-start=\"1487\" data-end=\"1522\"\u003e\n\u003cp data-start=\"1489\" data-end=\"1522\"\u003eProduct type: Copper spark plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"x3vjbp\" data-start=\"1523\" data-end=\"1565\"\u003e\n\u003cp data-start=\"1525\" data-end=\"1565\"\u003eCenter electrode core material: Copper\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13xlloe\" data-start=\"1566\" data-end=\"1607\"\u003e\n\u003cp data-start=\"1568\" data-end=\"1607\"\u003eCenter electrode tip material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3au8g6\" data-start=\"1608\" data-end=\"1650\"\u003e\n\u003cp data-start=\"1610\" data-end=\"1650\"\u003eGround electrode core material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17jmp0w\" data-start=\"1651\" data-end=\"1692\"\u003e\n\u003cp data-start=\"1653\" data-end=\"1692\"\u003eGround electrode tip material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1x9kiqi\" data-start=\"1693\" data-end=\"1735\"\u003e\n\u003cp data-start=\"1695\" data-end=\"1735\"\u003eGround electrode configuration: Single\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"55pk7u\" data-start=\"1736\" data-end=\"1768\"\u003e\n\u003cp data-start=\"1738\" data-end=\"1768\"\u003eGround electrode quantity: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"r5af6m\" data-start=\"1769\" data-end=\"1795\"\u003e\n\u003cp data-start=\"1771\" data-end=\"1795\"\u003eThread diameter: 14 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"163h8t2\" data-start=\"1796\" data-end=\"1815\"\u003e\n\u003cp data-start=\"1798\" data-end=\"1815\"\u003eSeat type: Flat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"palr3o\" data-start=\"1816\" data-end=\"1834\"\u003e\n\u003cp data-start=\"1818\" data-end=\"1834\"\u003eReach: 0.75 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1is1e0x\" data-start=\"1835\" data-end=\"1854\"\u003e\n\u003cp data-start=\"1837\" data-end=\"1854\"\u003eHex size: 21 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"dujk1e\" data-start=\"1855\" data-end=\"1877\"\u003e\n\u003cp data-start=\"1857\" data-end=\"1877\"\u003eResistor type: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"gwnm18\" data-start=\"1878\" data-end=\"1903\"\u003e\n\u003cp data-start=\"1880\" data-end=\"1903\"\u003eResistance: 4000 ohms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"10z8t69\" data-start=\"1904\" data-end=\"1929\"\u003e\n\u003cp data-start=\"1906\" data-end=\"1929\"\u003ePre-gap size: 1.27 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17h5pne\" data-start=\"1930\" data-end=\"1960\"\u003e\n\u003cp data-start=\"1932\" data-end=\"1960\"\u003eManufacturer heat range: 8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"sjdq26\" data-start=\"1961\" data-end=\"1992\"\u003e\n\u003cp data-start=\"1963\" data-end=\"1992\"\u003eInsulator material: Ceramic\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3c37w7\" data-start=\"1993\" data-end=\"2030\"\u003e\n\u003cp data-start=\"1995\" data-end=\"2030\"\u003eCenter electrode design: Standard\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"11yt6xq\" data-start=\"2031\" data-end=\"2078\"\u003e\n\u003cp data-start=\"2033\" data-end=\"2078\"\u003eCenter electrode projection: Mid projection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"t3ibti\" data-start=\"2079\" data-end=\"2140\"\u003e\n\u003cp data-start=\"2081\" data-end=\"2140\"\u003eCenter electrode insulator tip projection: Mid projection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1b7wdfo\" data-start=\"2141\" data-end=\"2188\"\u003e\n\u003cp data-start=\"2143\" data-end=\"2188\"\u003eElectrical terminal type: Non-removable nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1gbvvjz\" data-start=\"2189\" data-end=\"2213\"\u003e\n\u003cp data-start=\"2191\" data-end=\"2213\"\u003eWasher included: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"vb0oei\" data-start=\"2214\" data-end=\"2228\"\u003e\n\u003cp data-start=\"2216\" data-end=\"2228\"\u003eSkirt: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AUTOLITE","offers":[{"title":"Default Title","offer_id":46275729719495,"sku":"ELE1898","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2026-03-10152103_e6eec287-7caa-43f6-a0cc-6d462d91b556.png?v=1773186293","url":"https:\/\/mainstreeteshop.com\/products\/autolite-copper-spark-plug-646","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}