{"product_id":"denso-iridium-power-spark-plug-5304","title":"DENSO - Iridium Power Spark Plug - 5304","description":"\u003cp data-start=\"172\" data-end=\"544\"\u003e\u003cstrong data-start=\"172\" data-end=\"188\"\u003eDescription:\u003c\/strong\u003e\u003cbr data-start=\"188\" data-end=\"191\"\u003eThe Denso Iridium Power 5304 Spark Plug is engineered for strong ignition performance using a \u003cstrong data-start=\"285\" data-end=\"337\"\u003e0.4 mm iridium-tipped fine-wire center electrode\u003c\/strong\u003e that helps reduce required firing voltage and improve firing consistency. It features a \u003cstrong data-start=\"426\" data-end=\"472\"\u003etaper cut U-Groove nickel ground electrode\u003c\/strong\u003e to increase ignitability and reduce quenching for efficient combustion.\u003c\/p\u003e\n\u003cp data-start=\"546\" data-end=\"1108\"\u003eDesigned for dependable service and installation, the plug uses \u003cstrong data-start=\"610\" data-end=\"636\"\u003emachine-rolled threads\u003c\/strong\u003e to help prevent seizing or cross-threading, and it is \u003cstrong data-start=\"691\" data-end=\"709\"\u003e100% pre-fired\u003c\/strong\u003e for quality assurance. A purified alumina powder insulator supports strength and thermal conductivity, while a five-rib insulator design helps prevent flashover. The copper-glass seal bonds the center electrode and insulator for a gas-tight seal. This plug is a \u003cstrong data-start=\"972\" data-end=\"989\"\u003eresistor-type\u003c\/strong\u003e design (5k ohm) with a \u003cstrong data-start=\"1013\" data-end=\"1033\"\u003eheat range of 20\u003c\/strong\u003e, and it is rated for \u003cstrong data-start=\"1055\" data-end=\"1078\"\u003e30k miles longevity\u003c\/strong\u003e with a \u003cstrong data-start=\"1086\" data-end=\"1107\"\u003e12-month warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1110\" data-end=\"1123\"\u003e\u003cstrong data-start=\"1110\" data-end=\"1123\"\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1125\" data-end=\"1907\"\u003e\n\u003cli data-start=\"1125\" data-end=\"1230\"\u003e\n\u003cp data-start=\"1127\" data-end=\"1230\"\u003eIridium fine-wire center electrode (0.4 mm) to reduce required voltage and improve firing performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1231\" data-end=\"1269\"\u003e\n\u003cp data-start=\"1233\" data-end=\"1269\"\u003eCenter electrode material: Iridium\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1270\" data-end=\"1306\"\u003e\n\u003cp data-start=\"1272\" data-end=\"1306\"\u003eCenter electrode type: Fine wire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1307\" data-end=\"1349\"\u003e\n\u003cp data-start=\"1309\" data-end=\"1349\"\u003eCenter electrode projection: Projected\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1350\" data-end=\"1387\"\u003e\n\u003cp data-start=\"1352\" data-end=\"1387\"\u003eGround electrode material: Nickel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1388\" data-end=\"1423\"\u003e\n\u003cp data-start=\"1390\" data-end=\"1423\"\u003eGround electrode type: U-Groove\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1424\" data-end=\"1461\"\u003e\n\u003cp data-start=\"1426\" data-end=\"1461\"\u003eGround electrode shape: Taper cut\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1462\" data-end=\"1494\"\u003e\n\u003cp data-start=\"1464\" data-end=\"1494\"\u003eGround electrode quantity: 1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1495\" data-end=\"1521\"\u003e\n\u003cp data-start=\"1497\" data-end=\"1521\"\u003eResistor: Yes (5k ohm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1522\" data-end=\"1540\"\u003e\n\u003cp data-start=\"1524\" data-end=\"1540\"\u003eHeat range: 20\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1541\" data-end=\"1607\"\u003e\n\u003cp data-start=\"1543\" data-end=\"1607\"\u003eMachine-rolled threads help prevent seizing or cross-threading\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1608\" data-end=\"1683\"\u003e\n\u003cp data-start=\"1610\" data-end=\"1683\"\u003ePurified alumina powder insulator for strength and thermal conductivity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1684\" data-end=\"1730\"\u003e\n\u003cp data-start=\"1686\" data-end=\"1730\"\u003eFive-rib insulator helps prevent flashover\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1731\" data-end=\"1817\"\u003e\n\u003cp data-start=\"1733\" data-end=\"1817\"\u003eCopper-glass seal provides a gas-tight bond between center electrode and insulator\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1818\" data-end=\"1858\"\u003e\n\u003cp data-start=\"1820\" data-end=\"1858\"\u003e100% pre-fired for quality assurance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1859\" data-end=\"1882\"\u003e\n\u003cp data-start=\"1861\" data-end=\"1882\"\u003eWarranty: 12 months\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1883\" data-end=\"1907\"\u003e\n\u003cp data-start=\"1885\" data-end=\"1907\"\u003eLongevity: 30k miles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1909\" data-end=\"1928\"\u003e\u003cstrong data-start=\"1909\" data-end=\"1928\"\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1930\" data-end=\"2167\"\u003e\n\u003cli data-start=\"1930\" data-end=\"1956\"\u003e\n\u003cp data-start=\"1932\" data-end=\"1956\"\u003eThread diameter: 14 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1957\" data-end=\"1982\"\u003e\n\u003cp data-start=\"1959\" data-end=\"1982\"\u003eThread pitch: 1.25 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1983\" data-end=\"2004\"\u003e\n\u003cp data-start=\"1985\" data-end=\"2004\"\u003eSeat type: Gasket\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2005\" data-end=\"2028\"\u003e\n\u003cp data-start=\"2007\" data-end=\"2028\"\u003eReach: 19 mm (3\/4\")\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2029\" data-end=\"2055\"\u003e\n\u003cp data-start=\"2031\" data-end=\"2055\"\u003eHex size: 5\/8\" (16 mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2056\" data-end=\"2080\"\u003e\n\u003cp data-start=\"2058\" data-end=\"2080\"\u003eTerminal type: Solid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2081\" data-end=\"2105\"\u003e\n\u003cp data-start=\"2083\" data-end=\"2105\"\u003eGap: 0.043\" (1.1 mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2106\" data-end=\"2167\"\u003e\n\u003cp data-start=\"2108\" data-end=\"2167\"\u003eTorque specs: Cast iron 26–30 lb-ft; aluminum 15–22 lb-ft\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DENSO","offers":[{"title":"Default Title","offer_id":46090375921863,"sku":"DEN5304","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0665\/2277\/5751\/files\/Screenshot2026-01-15133638.png?v=1768512908","url":"https:\/\/mainstreeteshop.com\/products\/denso-iridium-power-spark-plug-5304","provider":"MAIN STREET ESHOP","version":"1.0","type":"link"}