{"product_id":"autolite-copper-spark-plug-403","title":"Autolite Copper Spark Plug – 403","description":"\u003cp data-start=\"111\" data-end=\"412\"\u003e\u003cstrong data-start=\"111\" data-end=\"127\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"127\" data-end=\"130\"\u003eThe Autolite 403 Copper Spark Plug is designed to deliver reliable ignition performance, quick starts, and consistent engine power. Its copper core center electrode provides excellent heat transfer, helping maintain proper operating temperatures and improving resistance to fouling.\u003c\/p\u003e\n\u003cp data-start=\"414\" data-end=\"789\"\u003eHigh nickel alloy center and ground electrodes provide extended durability and stable spark delivery. The multi-rib high alumina ceramic insulator enhances electrical insulation and heat dissipation, helping ensure dependable performance under demanding engine conditions. A nickel-plated shell helps resist corrosion and protects the spark plug from rust and wear over time.\u003c\/p\u003e\n\u003cp data-start=\"791\" data-end=\"954\"\u003eAutolite copper spark plugs are engineered as dependable replacements for many gasoline engines, helping maintain smooth engine operation and efficient combustion.\u003c\/p\u003e\n\u003cp data-start=\"956\" data-end=\"969\"\u003e\u003cstrong data-start=\"956\" data-end=\"969\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"971\" data-end=\"1336\"\u003e\n\u003cli data-section-id=\"50w2va\" data-start=\"971\" data-end=\"1049\"\u003e\n\u003cp data-start=\"973\" data-end=\"1049\"\u003eCopper core center electrode improves heat transfer and fouling resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13dx9yr\" data-start=\"1050\" data-end=\"1123\"\u003e\n\u003cp data-start=\"1052\" data-end=\"1123\"\u003eHigh nickel alloy center and ground electrodes extend spark plug life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1whbnrz\" data-start=\"1124\" data-end=\"1201\"\u003e\n\u003cp data-start=\"1126\" data-end=\"1201\"\u003eMulti-rib ceramic insulator improves electrical insulation and durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1oukki1\" data-start=\"1202\" data-end=\"1270\"\u003e\n\u003cp data-start=\"1204\" data-end=\"1270\"\u003eNickel-plated shell helps resist corrosion and improve longevity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"aqcqi8\" data-start=\"1271\" data-end=\"1336\"\u003e\n\u003cp data-start=\"1273\" data-end=\"1336\"\u003eDesigned for quick starts and consistent ignition performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1338\" data-end=\"1365\"\u003e\u003cstrong data-start=\"1338\" data-end=\"1365\"\u003eProduct Specifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1367\" data-end=\"2201\"\u003e\n\u003cli data-section-id=\"q5emep\" data-start=\"1367\" data-end=\"1387\"\u003e\n\u003cp data-start=\"1369\" data-end=\"1387\"\u003ePart number: 403\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"t1nkhe\" data-start=\"1388\" data-end=\"1407\"\u003e\n\u003cp data-start=\"1390\" data-end=\"1407\"\u003eBrand: Autolite\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9pckcv\" data-start=\"1408\" data-end=\"1443\"\u003e\n\u003cp data-start=\"1410\" data-end=\"1443\"\u003eProduct type: Copper spark plug\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"x3vjbp\" data-start=\"1444\" data-end=\"1486\"\u003e\n\u003cp data-start=\"1446\" data-end=\"1486\"\u003eCenter electrode core material: Copper\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13xlloe\" data-start=\"1487\" data-end=\"1528\"\u003e\n\u003cp data-start=\"1489\" data-end=\"1528\"\u003eCenter electrode tip material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3au8g6\" data-start=\"1529\" data-end=\"1571\"\u003e\n\u003cp data-start=\"1531\" data-end=\"1571\"\u003eGround electrode core material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"17jmp0w\" data-start=\"1572\" data-end=\"1613\"\u003e\n\u003cp data-start=\"1574\" data-end=\"1613\"\u003eGround electrode tip material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1x9kiqi\" data-start=\"1614\" data-end=\"1656\"\u003e\n\u003cp data-start=\"1616\" data-end=\"1656\"\u003eGround electrode configuration: Single\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"55pk7u\" data-start=\"1657\" data-end=\"1689\"\u003e\n\u003cp data-start=\"1659\" data-end=\"1689\"\u003eGround electrode quantity: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"r5af6m\" data-start=\"1690\" data-end=\"1716\"\u003e\n\u003cp data-start=\"1692\" data-end=\"1716\"\u003eThread diameter: 14 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9aw9i6\" data-start=\"1717\" data-end=\"1744\"\u003e\n\u003cp data-start=\"1719\" data-end=\"1744\"\u003eThread size: M14 × 1.25\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"163h8t2\" data-start=\"1745\" data-end=\"1764\"\u003e\n\u003cp data-start=\"1747\" data-end=\"1764\"\u003eSeat type: Flat\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1f28dx\" data-start=\"1765\" data-end=\"1793\"\u003e\n\u003cp data-start=\"1767\" data-end=\"1793\"\u003eWasher type: Flat washer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1gbvvjz\" data-start=\"1794\" data-end=\"1818\"\u003e\n\u003cp data-start=\"1796\" data-end=\"1818\"\u003eWasher included: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"palr3o\" data-start=\"1819\" data-end=\"1837\"\u003e\n\u003cp data-start=\"1821\" data-end=\"1837\"\u003eReach: 0.75 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"hsl4nj\" data-start=\"1838\" data-end=\"1860\"\u003e\n\u003cp data-start=\"1840\" data-end=\"1860\"\u003eHex size: 13\/16 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"dujk1e\" data-start=\"1861\" data-end=\"1883\"\u003e\n\u003cp data-start=\"1863\" data-end=\"1883\"\u003eResistor type: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"pg2zbh\" data-start=\"1884\" data-end=\"1909\"\u003e\n\u003cp data-start=\"1886\" data-end=\"1909\"\u003eResistance: 5000 ohms\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1a5bdik\" data-start=\"1910\" data-end=\"1934\"\u003e\n\u003cp data-start=\"1912\" data-end=\"1934\"\u003ePre-gap size: 0.9 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"e3s6de\" data-start=\"1935\" data-end=\"1966\"\u003e\n\u003cp data-start=\"1937\" data-end=\"1966\"\u003eManufacturer heat range: 11\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"sjdq26\" data-start=\"1967\" data-end=\"1998\"\u003e\n\u003cp data-start=\"1969\" data-end=\"1998\"\u003eInsulator material: Ceramic\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"3c37w7\" data-start=\"1999\" data-end=\"2036\"\u003e\n\u003cp data-start=\"2001\" data-end=\"2036\"\u003eCenter electrode design: Standard\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"i088to\" data-start=\"2037\" data-end=\"2086\"\u003e\n\u003cp data-start=\"2039\" data-end=\"2086\"\u003eCenter electrode projection: Short projection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"10g5i94\" data-start=\"2087\" data-end=\"2142\"\u003e\n\u003cp data-start=\"2089\" data-end=\"2142\"\u003eCenter electrode insulator tip projection: 0.039 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fyseti\" data-start=\"2143\" data-end=\"2186\"\u003e\n\u003cp data-start=\"2145\" data-end=\"2186\"\u003eElectrical terminal type: Removable nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"vb0oei\" data-start=\"2187\" data-end=\"2201\"\u003e\n\u003cp data-start=\"2189\" data-end=\"2201\"\u003eSkirt: Yes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AUTOLITE","offers":[{"title":"Default Title","offer_id":46275630792903,"sku":"ELE1888","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2026-03-10152103_5776d3e5-259a-46ef-b3c9-f90d1e33b7ca.png?v=1773182978","url":"https:\/\/mainstreeteshop.com\/products\/autolite-copper-spark-plug-403","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}