{"product_id":"ngk-4838-bp8h-n-10-v-power-spark-plug-strengthened-ground-electrode","title":"NGK 4838 BP8H-N-10 V-Power Spark Plug (Strengthened Ground Electrode)","description":"\u003ch3 data-section-id=\"hxsibk\" data-start=\"80\" data-end=\"97\"\u003eDescription\u003c\/h3\u003e\n\u003cp data-start=\"98\" data-end=\"367\"\u003eThe NGK 4838 BP8H-N-10 is a V-Power series spark plug designed to improve ignition efficiency and engine performance. Its \u003cstrong data-start=\"220\" data-end=\"253\"\u003eV-cut nickel center electrode\u003c\/strong\u003e directs the spark to the edge, allowing for faster flame propagation, better ignitability, and reduced quenching.\u003c\/p\u003e\n\u003cp data-start=\"369\" data-end=\"598\"\u003eBuilt with a strengthened ground electrode and a copper core, this plug offers enhanced durability and efficient heat dissipation—making it a solid choice for marine and small engine applications that demand reliable performance.\u003c\/p\u003e\n\u003chr data-start=\"600\" data-end=\"603\"\u003e\n\u003ch3 data-section-id=\"1sboupi\" data-start=\"605\" data-end=\"623\"\u003eKey Features\u003c\/h3\u003e\n\u003cul data-start=\"624\" data-end=\"1070\"\u003e\n\u003cli data-section-id=\"4ykofa\" data-start=\"624\" data-end=\"710\"\u003e\n\u003cstrong data-start=\"626\" data-end=\"660\"\u003eV-Power V-cut center electrode\u003c\/strong\u003e for improved ignitability and faster combustion\u003c\/li\u003e\n\u003cli data-section-id=\"11rcvvj\" data-start=\"711\" data-end=\"773\"\u003e\n\u003cstrong data-start=\"713\" data-end=\"746\"\u003eStrengthened ground electrode\u003c\/strong\u003e for increased durability\u003c\/li\u003e\n\u003cli data-section-id=\"umk6qp\" data-start=\"774\" data-end=\"828\"\u003e98% pure copper core for superior heat dissipation\u003c\/li\u003e\n\u003cli data-section-id=\"1fpf1xr\" data-start=\"829\" data-end=\"896\"\u003eTrivalent metal plating for corrosion resistance and anti-seize\u003c\/li\u003e\n\u003cli data-section-id=\"mairgu\" data-start=\"897\" data-end=\"950\"\u003eTriple gasket sealing prevents combustion leakage\u003c\/li\u003e\n\u003cli data-section-id=\"1lh6jcf\" data-start=\"951\" data-end=\"1014\"\u003eHigh-grade ceramic insulator for strength and heat transfer\u003c\/li\u003e\n\u003cli data-section-id=\"21b64k\" data-start=\"1015\" data-end=\"1070\"\u003eProjected tip design improves combustion efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1072\" data-end=\"1075\"\u003e\n\u003ch3 data-section-id=\"e5mrjc\" data-start=\"1077\" data-end=\"1097\"\u003eSpecifications\u003c\/h3\u003e\n\u003cp data-start=\"1099\" data-end=\"1110\"\u003e\u003cstrong data-start=\"1099\" data-end=\"1110\"\u003eGeneral\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1111\" data-end=\"1246\"\u003e\n\u003cli data-section-id=\"wqvn57\" data-start=\"1111\" data-end=\"1137\"\u003ePart Number: BP8H-N-10\u003c\/li\u003e\n\u003cli data-section-id=\"s8w2ra\" data-start=\"1138\" data-end=\"1160\"\u003eStock Number: 4838\u003c\/li\u003e\n\u003cli data-section-id=\"1g1ug6g\" data-start=\"1161\" data-end=\"1185\"\u003eHeat Range: 8 (cold)\u003c\/li\u003e\n\u003cli data-section-id=\"1wv827c\" data-start=\"1186\" data-end=\"1222\"\u003eResistor: No (non-resistor type)\u003c\/li\u003e\n\u003cli data-section-id=\"16s9y2k\" data-start=\"1223\" data-end=\"1246\"\u003eGap: 1.0 mm (.039\")\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1248\" data-end=\"1257\"\u003e\u003cstrong data-start=\"1248\" data-end=\"1257\"\u003eShell\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1258\" data-end=\"1383\"\u003e\n\u003cli data-section-id=\"14b2lss\" data-start=\"1258\" data-end=\"1286\"\u003eThread Size: 14mm x 1.25\u003c\/li\u003e\n\u003cli data-section-id=\"xcrequ\" data-start=\"1287\" data-end=\"1308\"\u003eSeat Type: Gasket\u003c\/li\u003e\n\u003cli data-section-id=\"n4vpzu\" data-start=\"1309\" data-end=\"1334\"\u003eReach: 12.7 mm (1\/2\")\u003c\/li\u003e\n\u003cli data-section-id=\"8gw5wo\" data-start=\"1335\" data-end=\"1363\"\u003eHex Size: 13\/16\" (21 mm)\u003c\/li\u003e\n\u003cli data-section-id=\"1wwscaz\" data-start=\"1364\" data-end=\"1383\"\u003eTerminal: Solid\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1385\" data-end=\"1399\"\u003e\u003cstrong data-start=\"1385\" data-end=\"1399\"\u003eElectrodes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1400\" data-end=\"1551\"\u003e\n\u003cli data-section-id=\"12sljn6\" data-start=\"1400\" data-end=\"1443\"\u003eCenter Electrode: Nickel (V-cut design)\u003c\/li\u003e\n\u003cli data-section-id=\"1wzmbyw\" data-start=\"1444\" data-end=\"1487\"\u003eGround Electrode: Nickel (strengthened)\u003c\/li\u003e\n\u003cli data-section-id=\"r56lu0\" data-start=\"1488\" data-end=\"1521\"\u003eConfiguration: Standard J-gap\u003c\/li\u003e\n\u003cli data-section-id=\"yx07sm\" data-start=\"1522\" data-end=\"1551\"\u003eProjection: Projected tip\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1553\" data-end=\"1556\"\u003e\n\u003ch3 data-section-id=\"biql0s\" data-start=\"1558\" data-end=\"1582\"\u003eFitment Highlights\u003c\/h3\u003e\n\u003cp data-start=\"1584\" data-end=\"1613\"\u003e\u003cstrong data-start=\"1584\" data-end=\"1613\"\u003eMarine – Outboard Engines\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1615\" data-end=\"1636\"\u003e\u003cstrong data-start=\"1615\" data-end=\"1636\"\u003eMercury \/ Mariner\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1637\" data-end=\"1768\"\u003e\n\u003cli data-section-id=\"11v6ao3\" data-start=\"1637\" data-end=\"1671\"\u003e6 HP – 125 HP (various models)\u003c\/li\u003e\n\u003cli data-section-id=\"1iaylv6\" data-start=\"1672\" data-end=\"1688\"\u003e8 HP, 9.9 HP\u003c\/li\u003e\n\u003cli data-section-id=\"1rneov2\" data-start=\"1689\" data-end=\"1723\"\u003e20 \/ 25 \/ 30 \/ 40 \/ 50 \/ 60 HP\u003c\/li\u003e\n\u003cli data-section-id=\"8pk3el\" data-start=\"1724\" data-end=\"1768\"\u003eSea Pro, Marathon, BigFoot, Jet variants\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1770\" data-end=\"1873\"\u003e\u003cem data-start=\"1770\" data-end=\"1873\"\u003e(Used across a wide range of 14mm plug marine outboard engines—verify exact fitment before purchase.)\u003c\/em\u003e\u003c\/p\u003e\n\u003chr data-start=\"1875\" data-end=\"1878\"\u003e\n\u003ch3 data-section-id=\"309kgt\" data-start=\"1880\" data-end=\"1903\"\u003ePerformance Notes\u003c\/h3\u003e\n\u003cul data-start=\"1904\" data-end=\"2229\"\u003e\n\u003cli data-section-id=\"9tfazf\" data-start=\"1904\" data-end=\"1995\"\u003e\n\u003cstrong data-start=\"1906\" data-end=\"1936\"\u003eHeat range 8 = colder plug\u003c\/strong\u003e, suited for higher-performance or sustained-load engines\u003c\/li\u003e\n\u003cli data-section-id=\"1s8pldd\" data-start=\"1996\" data-end=\"2076\"\u003eNon-resistor design may not be suitable for systems requiring RF suppression\u003c\/li\u003e\n\u003cli data-section-id=\"1sa29an\" data-start=\"2077\" data-end=\"2147\"\u003eV-Power design improves throttle response and starting performance\u003c\/li\u003e\n\u003cli data-section-id=\"1u25bt6\" data-start=\"2148\" data-end=\"2229\"\u003eIdeal for marine and small engine applications requiring a projected-tip plug\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NGK","offers":[{"title":"Default Title","offer_id":46440252833991,"sku":"ELE2171","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2026-04-23103722.png?v=1776965880","url":"https:\/\/mainstreeteshop.com\/products\/ngk-4838-bp8h-n-10-v-power-spark-plug-strengthened-ground-electrode","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}