{"product_id":"ignition-coil-iridium-spark-plugs-for-subaru-legacy-outback-2015-2019-2-5l","title":"Ignition Coil \u0026 Iridium Spark Plugs for Subaru Legacy Outback (2015-2019) 2.5L","description":"\u003ch2\u003eHigh-Energy Ignition Coil \u0026amp; Iridium Spark Plugs for 2015-2019 Subaru Legacy, Outback\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eDirect replacement ignition coils and iridium spark plugs restore proper spark timing and combustion efficiency for the 2.5L FB25 boxer engine.\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock Legacy, Outback Ignition Degradation\u003c\/h3\u003e\n  \u003cp\u003eThe factory ignition coils on the 2.5L FB25 engine are notoriously susceptible to thermal degradation over high-mileage heat cycles. Placed directly against the horizontal cylinder heads of the Subaru boxer configuration, the OEM coils endure localized heat soak that progressively breaks down internal epoxy potting. This thermal stress leads to micro-cracks in the coil housing, increasing electrical resistance and resulting in weak spark delivery. Simultaneously, standard spark plug electrodes erode over time, widening the gap and straining the ignition coils further. The combined failure of these components manifests as rough idling, persistent misfires under load, hesitation during acceleration, and decreased fuel economy.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis comprehensive ignition kit directly resolves factory thermal limitations by utilizing upgraded ignition coils constructed with high-dielectric epoxy and reinforced polymer housings. These materials provide superior resistance to thermal shock and vibration inherent to the horizontally opposed engine layout, ensuring consistent voltage output without primary winding breakdown. Paired with exact-spec iridium spark plugs, the system maintains a highly concentrated, consistent spark across a precise gap. The iridium center electrode offers exceptionally high melting points and hardness, preventing gap widening and maintaining optimal combustion efficiency over an extended service life. This complete refresh restores factory drivability, eliminates ignition-related CEL codes, and optimizes the air-fuel burn rate for proper power delivery.\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;\"\u003e2015-2019 Subaru Legacy, Outback\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 \/ BN, BS\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;\"\u003e175 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;\"\u003e22433AA720, UF-774, UF-747, IC881, E1274, NGK93501\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e2015 Subaru Legacy 2.5L\u003c\/li\u003e\n    \u003cli\u003e2016 Subaru Legacy 2.5L\u003c\/li\u003e\n    \u003cli\u003e2017 Subaru Legacy 2.5L\u003c\/li\u003e\n    \u003cli\u003e2018 Subaru Legacy 2.5L\u003c\/li\u003e\n    \u003cli\u003e2019 Subaru Legacy 2.5L\u003c\/li\u003e\n    \u003cli\u003e2015 Subaru Outback 2.5L\u003c\/li\u003e\n    \u003cli\u003e2016 Subaru Outback 2.5L\u003c\/li\u003e\n    \u003cli\u003e2017 Subaru Outback 2.5L\u003c\/li\u003e\n    \u003cli\u003e2018 Subaru Outback 2.5L\u003c\/li\u003e\n    \u003cli\u003e2019 Subaru Outback 2.5L\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Subaru All-Weather Standard\u003c\/h3\u003e\n  \u003cp\u003eBuilt to withstand the rugged, high-mileage demands of the Subaru symmetrical AWD platform, these ignition components restore the reliable, all-weather performance and smooth boxer operation your Legacy or Outback was engineered to deliver.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50254594572536,"sku":"DS-E3ARXHBO1","price":139.95,"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-2015-2019-2-5l-1.webp?v=1787948398","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-iridium-spark-plugs-for-subaru-legacy-outback-2015-2019-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}