{"product_id":"ngk-dilfr5a11-iridium-platinum-spark-plug-box-of-4","title":"NGK Iridium\/Platinum Spark Plug Box of 4 (DILFR5A11)","description":"\u003ch4\u003ePrecision Ignition for Demanding Performance Engines\u003c\/h4\u003e\n\u003cp\u003eThis dual precious metal spark plug pairs a fine wire iridium center electrode with a platinum ground pad, giving performance engines a stronger, more consistent spark across a wide range of operating conditions. The design targets reduced misfires and smoother throttle response for vehicles that call for a fine gap, high heat range plug.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFine wire iridium center electrode for a stronger, more focused spark\u003c\/li\u003e\n\u003cli\u003ePlatinum pad on the ground electrode resists erosion and extends service life\u003c\/li\u003e\n\u003cli\u003eLaser welded electrode tips for long term durability under high combustion temperatures\u003c\/li\u003e\n\u003cli\u003eResistor design suppresses radio and electronic interference\u003c\/li\u003e\n\u003cli\u003ePrecision engineered gap for consistent ignition across the rev range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGap\u003c\/td\u003e\n\u003ctd\u003e1.1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat Range\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread Size\u003c\/td\u003e\n\u003ctd\u003eM14 x 1.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReach\u003c\/td\u003e\n\u003ctd\u003e26.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHex Size\u003c\/td\u003e\n\u003ctd\u003e5\/8 in (16mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistor\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e4 NGK DILFR5A11 iridium\/platinum spark plugs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAbout NGK\u003c\/h4\u003e\n\u003cp\u003eNGK is a global leader in ignition technology, supplying precious metal spark plugs to major vehicle manufacturers as original equipment for decades. Its combination of iridium and platinum materials is engineered to extend service life while maintaining a stable spark under demanding conditions.\u003c\/p\u003e\n\u003ch4\u003eRelated Parts\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ngk-iridium-spark-plug-box-of-4-dilkar7b11\"\u003eNGK Iridium Spark Plug Box of 4 (DILKAR7B11)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ngk-double-platinum-spark-plug-box-of-4-pfr7s8eg\"\u003eNGK Double Platinum Spark Plug Box of 4 (PFR7S8EG)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ngk-iridium-ix-spark-plug-box-of-4-dvpr9eix\"\u003eNGK Iridium IX Spark Plug Box of 4 (DVPR9EIX)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the NGK DILFR5A11?\u003c\/strong\u003e\n\u003cp\u003eThe NGK DILFR5A11 is a dual precious metal spark plug combining a fine wire iridium center electrode with a platinum tipped ground electrode. It is designed for engines requiring a heat range 5 plug with a 1.1mm gap and M14 x 1.25 thread.\u003c\/p\u003e\n\u003cstrong\u003eHow is this different from a standard iridium plug?\u003c\/strong\u003e\n\u003cp\u003eThis plug uses platinum on the ground electrode in addition to iridium on the center electrode, which can offer additional wear resistance compared to an iridium only design.\u003c\/p\u003e\n\u003cstrong\u003eWhat gap does this spark plug use?\u003c\/strong\u003e\n\u003cp\u003eThis plug uses a 1.1mm gap, which is wider than many fine wire iridium plugs and suited to specific engine applications.\u003c\/p\u003e\n\u003cstrong\u003eWhat thread and reach does this plug use?\u003c\/strong\u003e\n\u003cp\u003eIt uses an M14 x 1.25 thread with a 26.5mm reach and 5\/8 inch hex size.\u003c\/p\u003e\n\u003cstrong\u003eDoes this spark plug include a resistor?\u003c\/strong\u003e\n\u003cp\u003eYes, this plug includes an internal resistor to help suppress radio and electronic interference.\u003c\/p\u003e\n\u003cstrong\u003eHow many plugs come in this box?\u003c\/strong\u003e\n\u003cp\u003eThis listing includes a box of 4 spark plugs.\u003c\/p\u003e\n\u003cstrong\u003eHow long do iridium\/platinum plugs typically last?\u003c\/strong\u003e\n\u003cp\u003ePrecious metal plugs generally last longer than standard nickel plugs due to the wear resistance of iridium and platinum, though exact service life depends on the vehicle and driving conditions.\u003c\/p\u003e\n\u003ch4\u003eInstall Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eAllow the engine to cool completely before starting work\u003c\/li\u003e\n\u003cli\u003eRemove the ignition coil, coil pack, or spark plug wire\u003c\/li\u003e\n\u003cli\u003eUse a spark plug socket to remove the old plug, turning counterclockwise\u003c\/li\u003e\n\u003cli\u003eVerify the gap on the new plug matches manufacturer specification\u003c\/li\u003e\n\u003cli\u003eThread the new plug in by hand until seated, then torque to specification\u003c\/li\u003e\n\u003cli\u003eReconnect the coil, coil pack, or wire before starting the engine\u003c\/li\u003e\n\u003c\/ol\u003e\n","brand":"NGK","offers":[{"title":"Default Title","offer_id":46126080688207,"sku":"NGK93759","price":192.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/ngk-dilfr5a11-iridium-platinum-spark-plug-1.webp?v=1784643016","url":"https:\/\/www.blackopsautoworks.com\/products\/ngk-dilfr5a11-iridium-platinum-spark-plug-box-of-4","provider":"Black Ops Auto Works","version":"1.0","type":"link"}