{"product_id":"ignition-coil-iridium-spark-plugs-for-subaru-legacy-outback-2013-2014-2-5l-h4","title":"Ignition Coil \u0026 Iridium Spark Plugs for Subaru Legacy Outback (2013-2014) 2.5L H4","description":"\u003ch2\u003eHigh-Voltage Ignition Coil \u0026amp; Iridium Spark Plugs for 2013-2014 Subaru Outback, Legacy (FB25 \/ BR, BM)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eRestores proper spark delivery and combustion efficiency to resolve misfires, rough idling, and poor fuel economy in aging FB25 platforms.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Outback, Legacy Ignition Degradation\u003c\/h3\u003e\n\u003cp\u003eThe factory FB25 ignition coils degrade over time due to continuous thermal cycling and engine bay heat soak, leading to internal winding resistance failure and insulation breakdown. Additionally, standard OEM spark plug electrodes wear down over tens of thousands of miles, gradually increasing the spark gap. This widened gap places severe strain on the aging coil packs, requiring higher voltage to arc. The resulting electrical stress leads to delayed spark timing, incomplete combustion, cylinder misfires (triggering P0301-P0304 OBD-II codes), and noticeable hesitation during initial acceleration or under heavy load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis kit replaces the compromised OEM components with high-dielectric, epoxy-filled ignition coils specifically designed to withstand extreme engine bay temperatures without voltage leakage or primary\/secondary winding failure. Paired with fine-wire iridium center electrode spark plugs, the system requires significantly less firing voltage to bridge the gap while providing a highly concentrated, powerful spark. The dense iridium alloy provides exceptional resistance to electrical erosion and thermal degradation, ensuring a consistent spark gap over an extended service interval. This precise combination stabilizes the idle, improves throttle response, eliminates misfires, and restores factory fuel economy specifications.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2013-2014 Subaru Outback, Legacy\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eFB25 2.5L H4 \/ BR, BM\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e173 hp \/ 174 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2013 Subaru Outback 2.5i, 2.5i Premium, 2.5i Limited (2.5L H4)\u003c\/li\u003e\n  \u003cli\u003e2014 Subaru Outback 2.5i, 2.5i Premium, 2.5i Limited (2.5L H4)\u003c\/li\u003e\n  \u003cli\u003e2013 Subaru Legacy 2.5i, 2.5i Premium, 2.5i Limited (2.5L H4)\u003c\/li\u003e\n  \u003cli\u003e2014 Subaru Legacy 2.5i, 2.5i Premium, 2.5i Limited (2.5L H4)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Subaru Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to maintain Subaru's stringent durability standards, ensuring consistent power delivery to the symmetrical all-wheel-drive system and dependable starting performance in harsh winter conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":48266370253048,"sku":"DS-E1R05CTQK","price":164.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-iridium-spark-plugs-for-subaru-legacy-outback-2013-2014-2-5l-h4-1.jpg?v=1776813258","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-iridium-spark-plugs-for-subaru-legacy-outback-2013-2014-2-5l-h4","provider":"Performance Chip Tuning","version":"1.0","type":"link"}