{"product_id":"champion-copper-plus-spark-plug-21","title":"Champion Copper Plus Spark Plug 21","description":"\u003ch2 data-section-id=\"rmw5tv\" data-start=\"190\" data-end=\"204\"\u003eDescription\u003c\/h2\u003e\n\u003cp data-start=\"205\" data-end=\"534\"\u003eThe \u003cstrong data-start=\"209\" data-end=\"256\"\u003eChampion Copper Plus Spark Plug 21 (RF14YC)\u003c\/strong\u003e is engineered to deliver dependable ignition performance and long service life. Featuring a \u003cstrong data-start=\"349\" data-end=\"381\"\u003ecopper core center electrode\u003c\/strong\u003e, this spark plug improves conductivity and heat control to help maintain consistent combustion and reduce electrode wear during normal engine operation.\u003c\/p\u003e\n\u003cp data-start=\"536\" data-end=\"808\"\u003eBuilt to \u003cstrong data-start=\"545\" data-end=\"570\"\u003eISO and SAE standards\u003c\/strong\u003e, Champion Copper Plus spark plugs are designed for reliable replacement performance across a wide range of engines. The copper core allows for accurate heat range control, helping support longer plug life and stable ignition performance.\u003c\/p\u003e\n\u003cp data-start=\"810\" data-end=\"1108\"\u003eConstructed with \u003cstrong data-start=\"827\" data-end=\"872\"\u003enickel and nickel-copper alloy electrodes\u003c\/strong\u003e, this spark plug provides strong corrosion resistance and durability. With a \u003cstrong data-start=\"950\" data-end=\"1017\"\u003etapered seat design, resistor construction, and factory pre-gap\u003c\/strong\u003e, the RF14YC spark plug supports reliable engine performance and smooth ignition operation.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1d7mrtu\" data-start=\"1110\" data-end=\"1121\"\u003eFeatures\u003c\/h2\u003e\n\u003cul data-start=\"1122\" data-end=\"1529\"\u003e\n\u003cli data-section-id=\"1spuydi\" data-start=\"1122\" data-end=\"1197\"\u003e\n\u003cp data-start=\"1124\" data-end=\"1197\"\u003e\u003cstrong data-start=\"1124\" data-end=\"1156\"\u003eCopper core center electrode\u003c\/strong\u003e improves conductivity and heat control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"7l4ebr\" data-start=\"1198\" data-end=\"1259\"\u003e\n\u003cp data-start=\"1200\" data-end=\"1259\"\u003eBuilt to \u003cstrong data-start=\"1209\" data-end=\"1234\"\u003eISO and SAE standards\u003c\/strong\u003e for proven performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"h6kr4l\" data-start=\"1260\" data-end=\"1343\"\u003e\n\u003cp data-start=\"1262\" data-end=\"1343\"\u003e\u003cstrong data-start=\"1262\" data-end=\"1301\"\u003eNickel center and ground electrodes\u003c\/strong\u003e for durability and corrosion resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"cqv1bt\" data-start=\"1344\" data-end=\"1404\"\u003e\n\u003cp data-start=\"1346\" data-end=\"1404\"\u003e\u003cstrong data-start=\"1346\" data-end=\"1365\"\u003eResistor design\u003c\/strong\u003e helps reduce electrical interference\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1uuh889\" data-start=\"1405\" data-end=\"1479\"\u003e\n\u003cp data-start=\"1407\" data-end=\"1479\"\u003e\u003cstrong data-start=\"1407\" data-end=\"1435\"\u003eCopper Plus construction\u003c\/strong\u003e for dependable performance and durability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"jo4bq1\" data-start=\"1480\" data-end=\"1529\"\u003e\n\u003cp data-start=\"1482\" data-end=\"1529\"\u003e\u003cstrong data-start=\"1482\" data-end=\"1503\"\u003ePre-gapped design\u003c\/strong\u003e for easier installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1a3ueyz\" data-start=\"1531\" data-end=\"1548\"\u003eSpecifications\u003c\/h2\u003e\n\u003cul data-start=\"1549\" data-end=\"2225\"\u003e\n\u003cli data-section-id=\"oj4f2o\" data-start=\"1549\" data-end=\"1580\"\u003e\n\u003cp data-start=\"1551\" data-end=\"1580\"\u003eBrand: Champion Spark Plugs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"vnhtm7\" data-start=\"1581\" data-end=\"1602\"\u003e\n\u003cp data-start=\"1583\" data-end=\"1602\"\u003ePlug Type: RF14YC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"iqia62\" data-start=\"1603\" data-end=\"1643\"\u003e\n\u003cp data-start=\"1605\" data-end=\"1643\"\u003eClassification: Champion Copper Plus\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"psgbmu\" data-start=\"1644\" data-end=\"1686\"\u003e\n\u003cp data-start=\"1646\" data-end=\"1686\"\u003eGround Electrode Core Material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"sunzm9\" data-start=\"1687\" data-end=\"1737\"\u003e\n\u003cp data-start=\"1689\" data-end=\"1737\"\u003eGround Electrode Material: Nickel Copper Alloy\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1w81wf2\" data-start=\"1738\" data-end=\"1779\"\u003e\n\u003cp data-start=\"1740\" data-end=\"1779\"\u003eCenter Electrode Tip Material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"bbt1jx\" data-start=\"1780\" data-end=\"1819\"\u003e\n\u003cp data-start=\"1782\" data-end=\"1819\"\u003eCenter Electrode Diameter: 0.094 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"2lg8h2\" data-start=\"1820\" data-end=\"1863\"\u003e\n\u003cp data-start=\"1822\" data-end=\"1863\"\u003eElectrical Terminal Type: Removable Nut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"58lhpw\" data-start=\"1864\" data-end=\"1900\"\u003e\n\u003cp data-start=\"1866\" data-end=\"1900\"\u003ePre-Gap Size: 0.040 in \/ 1.02 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1tcgx5m\" data-start=\"1901\" data-end=\"1933\"\u003e\n\u003cp data-start=\"1903\" data-end=\"1933\"\u003eGround Electrode Quantity: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1eukqmf\" data-start=\"1934\" data-end=\"1965\"\u003e\n\u003cp data-start=\"1936\" data-end=\"1965\"\u003eManufacturer Heat Range: 14\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1sl50u2\" data-start=\"1966\" data-end=\"1988\"\u003e\n\u003cp data-start=\"1968\" data-end=\"1988\"\u003eSeat Type: Tapered\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"44cm5l\" data-start=\"1989\" data-end=\"2008\"\u003e\n\u003cp data-start=\"1991\" data-end=\"2008\"\u003eReach: 0.429 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"zuayis\" data-start=\"2009\" data-end=\"2050\"\u003e\n\u003cp data-start=\"2011\" data-end=\"2050\"\u003eThread Diameter: 0.709 in \/ 18.000 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"cf799m\" data-start=\"2051\" data-end=\"2068\"\u003e\n\u003cp data-start=\"2053\" data-end=\"2068\"\u003eHex Type: Hex\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"e40vn5\" data-start=\"2069\" data-end=\"2103\"\u003e\n\u003cp data-start=\"2071\" data-end=\"2103\"\u003eHex Size: 0.813 in \/ 20.650 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"13cv0j7\" data-start=\"2104\" data-end=\"2133\"\u003e\n\u003cp data-start=\"2106\" data-end=\"2133\"\u003eInstalled Height: 2.27 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"m3cn6f\" data-start=\"2134\" data-end=\"2163\"\u003e\n\u003cp data-start=\"2136\" data-end=\"2163\"\u003eInsulator Height: 0.06 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"9uyfdh\" data-start=\"2164\" data-end=\"2197\"\u003e\n\u003cp data-start=\"2166\" data-end=\"2197\"\u003eInsulator Projection: 0.06 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"vdxfd\" data-start=\"2198\" data-end=\"2225\"\u003e\n\u003cp data-start=\"2200\" data-end=\"2225\"\u003eTaper Diameter: 0.34 in\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"b0mh6b\" data-start=\"2227\" data-end=\"2249\"\u003eApplication Summary\u003c\/h2\u003e\n\u003cul data-start=\"2250\" data-end=\"2544\"\u003e\n\u003cli data-section-id=\"8w4bgx\" data-start=\"2250\" data-end=\"2444\"\u003e\n\u003cp data-start=\"2252\" data-end=\"2444\"\u003eFord Light Truck: 2.8L L6 (1965), 3.9L L6 (1965–1971), 4.9L L6 (1965–1966), 5.0L V8 (1968–1974), 5.8L V8 (1967–1974), 5.9L V8 (1968–1977), 6.4L V8 (1971–1976), 6.7L V8 (1974), 7.0L V8 (1972)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"uizb9f\" data-start=\"2445\" data-end=\"2544\"\u003e\n\u003cp data-start=\"2447\" data-end=\"2544\"\u003eFord Passenger Car: 2.3L L6 (1955–1956), 2.4L L6 (1961), 2.8L L6 (1963–1965), 3.9L L6 (1965–1972)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHAMPION","offers":[{"title":"Default Title","offer_id":46284889063623,"sku":"ELE1948","price":3.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2026-03-12104713.png?v=1773337523","url":"https:\/\/mainstreeteshop.com\/products\/champion-copper-plus-spark-plug-21","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}