{"product_id":"ignition-coil-iridium-spark-plugs-for-subaru-impreza-2008-2010-2-5l","title":"Ignition Coil + Iridium Spark Plugs for Subaru Impreza (2008-2010) 2.5L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Iridium Spark Plug Kit for 2008-2010 Subaru Impreza\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit ignition coil and iridium spark plug kit restores primary and secondary ignition efficiency on the 2008-2010 Subaru Impreza to eliminate cylinder misfires, stabilize idle oscillation, and restore lost combustion pressure.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Subaru Impreza Thermal Degradation and Secondary Leakage\u003c\/h3\u003e\n\u003cp\u003eDue to the horizontally opposed cylinder configuration of the Subaru boxer engine, factory ignition coils sit in tight proximity to the cylinder heads and exhaust manifolds. Over thousands of miles, intense heat soak degrades the internal epoxy potting and hardens the silicone spark plug boots. This leads to dielectric breakdown, micro-arcing, and intermittent P0301-P0304 fault codes. Furthermore, factory plug electrodes widen over time, dramatically raising the required discharge voltage and placing excessive electrical load on aging OEM \u003cstrong\u003eUF508\u003c\/strong\u003e and \u003cstrong\u003e22433AA541\u003c\/strong\u003e ignition coils.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition service kit restores factory ignition integrity using high-dielectric epoxy resin casings and thermal-resistant magnetic copper secondary windings that resist high-voltage tracking under heavy acceleration. Paired with laser-welded fine-wire iridium spark plugs, the 0.6mm iridium center electrode significantly reduces quenching while requiring less discharge voltage from the coils. High-grade fluorosilicone spark plug boots protect against ambient engine oil intrusion and horizontal tube heat, guaranteeing consistent flame propagation and crisp throttle response across the entire RPM band.\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; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2008-2010 Subaru Impreza\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eEJ253\u003c\/strong\u003e 2.5L SOHC \/ \u003cstrong\u003eGE\/GH\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e170 hp \/ 170 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e\n\u003cstrong\u003eUF508\u003c\/strong\u003e, \u003cstrong\u003eUF567\u003c\/strong\u003e, \u003cstrong\u003e22433AA541\u003c\/strong\u003e, \u003cstrong\u003e22433AA418\u003c\/strong\u003e, \u003cstrong\u003e22433AA542\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2008-2010 Subaru Impreza 2.5i Sedan 2.5L H4 (EJ253)\u003c\/li\u003e\n  \u003cli\u003e2008-2010 Subaru Impreza 2.5i Hatchback 2.5L H4 (EJ253)\u003c\/li\u003e\n  \u003cli\u003e2008-2010 Subaru Impreza Outback Sport 2.5L H4 (EJ253)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the GE\/GH Impreza?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2008-2010 Subaru Impreza equipped with the naturally aspirated \u003cstrong\u003eEJ253\u003c\/strong\u003e 2.5L engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these spark plugs pre-gapped for installation?\u003c\/strong\u003e\u003cbr\u003e Yes, the iridium plugs come pre-gapped to factory clearance; verify gently with a feeler gauge and torque directly into the cylinder heads to 15-20 lb-ft.\u003c\/p\u003e\n\n\u003ch3\u003eThe Subaru Boxer Standard\u003c\/h3\u003e\n\u003cp\u003eBecause accessing ignition components within the compact chassis clearance of the \u003cstrong\u003eGE\/GH\u003c\/strong\u003e boxer platform requires dedicated labor, installing matched high-temp coils and iridium plugs together eliminates repetitive maintenance and delivers the long-term ignition power your Subaru demands.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50622868783352,"sku":"DS-EGH0JWDVV","price":196.95,"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-impreza-2008-2010-2-5l-1.jpg?v=1790276212","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-iridium-spark-plugs-for-subaru-impreza-2008-2010-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}