{"product_id":"autolite-copper-spark-plug-66","title":"Autolite Copper Spark Plug – 66","description":"\u003cp data-start=\"110\" data-end=\"411\"\u003e\u003cstrong data-start=\"110\" data-end=\"126\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"126\" data-end=\"129\"\u003eThe Autolite 66 Copper Spark Plug is designed to deliver dependable ignition performance, fast starts, and efficient combustion. Built with a copper core center electrode, it offers excellent thermal conductivity to help control operating temperatures and reduce spark plug fouling.\u003c\/p\u003e\n\u003cp data-start=\"413\" data-end=\"775\"\u003eIts high nickel alloy center and ground electrodes are engineered for durability and extended service life, while the high alumina multi-rib ceramic insulator provides superior electrical insulation and heat dissipation. A corrosion-resistant nickel-plated shell protects against rust and wear, ensuring reliable performance even in demanding driving conditions.\u003c\/p\u003e\n\u003cp data-start=\"777\" data-end=\"942\"\u003eAutolite copper spark plugs are a trusted replacement choice for many gasoline engines, helping maintain smooth engine operation and consistent ignition performance.\u003c\/p\u003e\n\u003cp data-start=\"944\" data-end=\"957\"\u003e\u003cstrong data-start=\"944\" data-end=\"957\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"959\" data-end=\"1327\"\u003e\n\u003cli data-section-id=\"50w2va\" data-start=\"959\" data-end=\"1037\"\u003e\n\u003cp data-start=\"961\" data-end=\"1037\"\u003eCopper core center electrode improves heat transfer and fouling resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"38woe1\" data-start=\"1038\" data-end=\"1110\"\u003e\n\u003cp data-start=\"1040\" data-end=\"1110\"\u003eHigh nickel alloy center and ground electrodes help extend plug life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1fmj9xn\" data-start=\"1111\" data-end=\"1186\"\u003e\n\u003cp data-start=\"1113\" data-end=\"1186\"\u003eMulti-rib ceramic insulator enhances electrical insulation and strength\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"gn365x\" data-start=\"1187\" data-end=\"1256\"\u003e\n\u003cp data-start=\"1189\" data-end=\"1256\"\u003eNickel-plated shell helps resist corrosion and improve durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"159lc92\" data-start=\"1257\" data-end=\"1327\"\u003e\n\u003cp data-start=\"1259\" data-end=\"1327\"\u003eDesigned for reliable ignition performance and quick engine starts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1329\" data-end=\"1356\"\u003e\u003cstrong data-start=\"1329\" data-end=\"1356\"\u003eProduct Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1358\" data-end=\"2065\"\u003e\n\u003cli data-section-id=\"1vimh52\" data-start=\"1358\" data-end=\"1377\"\u003e\n\u003cp data-start=\"1360\" data-end=\"1377\"\u003ePart number: 66\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"t1nkhe\" data-start=\"1378\" data-end=\"1397\"\u003e\n\u003cp data-start=\"1380\" data-end=\"1397\"\u003eBrand: Autolite\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9pckcv\" data-start=\"1398\" data-end=\"1433\"\u003e\n\u003cp data-start=\"1400\" data-end=\"1433\"\u003eProduct type: Copper spark plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"x3vjbp\" data-start=\"1434\" data-end=\"1476\"\u003e\n\u003cp data-start=\"1436\" data-end=\"1476\"\u003eCenter electrode core material: Copper\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13xlloe\" data-start=\"1477\" data-end=\"1518\"\u003e\n\u003cp data-start=\"1479\" data-end=\"1518\"\u003eCenter electrode tip material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3au8g6\" data-start=\"1519\" data-end=\"1561\"\u003e\n\u003cp data-start=\"1521\" data-end=\"1561\"\u003eGround electrode core material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17jmp0w\" data-start=\"1562\" data-end=\"1603\"\u003e\n\u003cp data-start=\"1564\" data-end=\"1603\"\u003eGround electrode tip material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1ibjk3h\" data-start=\"1604\" data-end=\"1636\"\u003e\n\u003cp data-start=\"1606\" data-end=\"1636\"\u003eGround configuration: Single\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"55pk7u\" data-start=\"1637\" data-end=\"1669\"\u003e\n\u003cp data-start=\"1639\" data-end=\"1669\"\u003eGround electrode quantity: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"r5af6m\" data-start=\"1670\" data-end=\"1696\"\u003e\n\u003cp data-start=\"1672\" data-end=\"1696\"\u003eThread diameter: 14 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"163h8t2\" data-start=\"1697\" data-end=\"1716\"\u003e\n\u003cp data-start=\"1699\" data-end=\"1716\"\u003eSeat type: Flat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1gbvvjz\" data-start=\"1717\" data-end=\"1741\"\u003e\n\u003cp data-start=\"1719\" data-end=\"1741\"\u003eWasher included: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"palr3o\" data-start=\"1742\" data-end=\"1760\"\u003e\n\u003cp data-start=\"1744\" data-end=\"1760\"\u003eReach: 0.75 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1is1e0x\" data-start=\"1761\" data-end=\"1780\"\u003e\n\u003cp data-start=\"1763\" data-end=\"1780\"\u003eHex size: 21 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"dujk1e\" data-start=\"1781\" data-end=\"1803\"\u003e\n\u003cp data-start=\"1783\" data-end=\"1803\"\u003eResistor type: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"gwnm18\" data-start=\"1804\" data-end=\"1829\"\u003e\n\u003cp data-start=\"1806\" data-end=\"1829\"\u003eResistance: 4000 ohms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"78117i\" data-start=\"1830\" data-end=\"1857\"\u003e\n\u003cp data-start=\"1832\" data-end=\"1857\"\u003ePre-gap size: 0.8636 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17h5pne\" data-start=\"1858\" data-end=\"1888\"\u003e\n\u003cp data-start=\"1860\" data-end=\"1888\"\u003eManufacturer heat range: 8\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"sjdq26\" data-start=\"1889\" data-end=\"1920\"\u003e\n\u003cp data-start=\"1891\" data-end=\"1920\"\u003eInsulator material: Ceramic\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3c37w7\" data-start=\"1921\" data-end=\"1958\"\u003e\n\u003cp data-start=\"1923\" data-end=\"1958\"\u003eCenter electrode design: Standard\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"11yt6xq\" data-start=\"1959\" data-end=\"2006\"\u003e\n\u003cp data-start=\"1961\" data-end=\"2006\"\u003eCenter electrode projection: Mid projection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fyseti\" data-start=\"2007\" data-end=\"2050\"\u003e\n\u003cp data-start=\"2009\" data-end=\"2050\"\u003eElectrical terminal type: Removable nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"vb0oei\" data-start=\"2051\" data-end=\"2065\"\u003e\n\u003cp data-start=\"2053\" data-end=\"2065\"\u003eSkirt: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AUTOLITE","offers":[{"title":"Default Title","offer_id":46275739058375,"sku":"ELE1900","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2026-03-10151751_baa66b2d-1056-46df-83e1-d1a53d091a4a.png?v=1773186557","url":"https:\/\/mainstreeteshop.com\/products\/autolite-copper-spark-plug-66","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}