{"product_id":"denso-3115-spark-plug","title":"Denso 3115 Spark Plug","description":"\u003ch2\u003eDouble Platinum Spark Plug\u003c\/h2\u003e\u003cp\u003eThis Denso Double Platinum spark plug is built for OE-level performance, durability, and emissions control. It uses platinum on the center electrode and a platinum chip on the ground electrode for consistent ignition performance across a wide range of older import applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDouble Platinum design with platinum on both electrodes for stable spark performance.\u003c\/li\u003e\n\u003cli\u003e5000 ohm resistor helps control electrical noise in the ignition system.\u003c\/li\u003e\n\u003cli\u003ePre-gapped to 1.1 mm for straightforward service replacement.\u003c\/li\u003e\n\u003cli\u003eNickel ground core and copper center core support efficient heat transfer.\u003c\/li\u003e\n\u003cli\u003eFlat seat, 14 mm thread diameter, and 19.00 mm reach for confirmed fitment applications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct Details\u003c\/h2\u003e\u003cp\u003ePart number 3115 is a Denso spark plug from the Double Platinum line, engineered to meet strict OE standards for performance, durability, and emissions. The construction combines a platinum center electrode tip with a platinum chip ground design, along with a standard ground configuration and 20.6 mm hex size. This plug is used in a broad range of applications, including Hyundai Sonata, Mitsubishi Eclipse, and Subaru Loyale models listed in the fitment data. Part number 3115 is also cross-referenced to Denso Auto Parts P20PR11 for the same application.\u003c\/p\u003e\u003ch2\u003eCommon Replacement Uses\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores weak or inconsistent spark output.\u003c\/li\u003e\n\u003cli\u003eAddresses misfire concerns caused by worn electrodes.\u003c\/li\u003e\n\u003cli\u003eHelps correct rough idle and hard starting linked to aged plugs.\u003c\/li\u003e\n\u003cli\u003eSupports proper combustion when service intervals have been exceeded.\u003c\/li\u003e\n\u003cli\u003eReplaces plugs with incorrect heat range, reach, or seat type.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eVerify thread diameter, reach, seat type, and pre-gap before installation. Confirm the application against the vehicle’s service information for the exact engine and ignition specification. Use the listed fitment data for Hyundai Sonata, Mitsubishi Eclipse, and Subaru Loyale applications, and match the plug to the required ignition setup before final installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDenso manufactures this Double Platinum spark plug to strict OE performance, durability, and emissions standards.\u003c\/p\u003e","brand":"Denso","offers":[{"title":"Default Title","offer_id":53503715573941,"sku":"BBNF-3115","price":15.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/NP_3115_Fro.jpg?v=1791612648","url":"https:\/\/www.partcatalog.com\/products\/denso-3115-spark-plug","provider":"PartCatalog","version":"1.0","type":"link"}