{"product_id":"ignition-coil-spark-plugs-for-subaru-legacy-1990-1996-2-2l-2-5l","title":"Ignition Coil + Spark Plugs for Subaru Legacy (1990-1996) 2.2L 2.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Ignition Coil Pack and Spark Plug Kit for 1990-1996 Subaru Legacy 2.2L, 2.5L (BC\/BF\/BD\/BG - EJ22\/EJ25D)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and spark plug service kit restores high-voltage spark delivery on the 1990-1996 Subaru Legacy to eliminate engine misfires, erratic idle, and unburnt hydrocarbon emissions.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Subaru Legacy Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eFactory waste-spark coil packs on the early \u003cstrong\u003eBC\u003c\/strong\u003e, \u003cstrong\u003eBF\u003c\/strong\u003e, \u003cstrong\u003eBD\u003c\/strong\u003e, and \u003cstrong\u003eBG\u003c\/strong\u003e chassis sit directly atop the boxer intake plenum where continuous thermal cycling degrades the internal epoxy resin and primary copper windings. Over time, micro-fractures in the coil housing cause high-voltage secondary arc-through to the engine block under heavy load. Concurrently, factory copper-core spark plugs experience significant electrode erosion and gap enlargement past 0.044 inches. This excessive secondary resistance stresses the internal coil drivers, resulting in hesitation under boost or throttle transitions, carbon fouling, and incomplete combustion in the \u003cstrong\u003eEJ22\u003c\/strong\u003e and \u003cstrong\u003eEJ25D\u003c\/strong\u003e combustion chambers.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition refresh combines a heavy-duty, direct-replacement coil pack with factory-calibrated spark plugs engineered to withstand aggressive thermal expansion. The replacement coil pack features high-dielectric epoxy potting and vacuum-impregnated magnetic laminations to prevent internal dielectric punch-through. Matched with precise cold-rolled steel terminal towers and premium spark plugs with corrosion-resistant nickel-alloy shells and highly pure alumina silicate ceramic insulators, this kit stabilizes spark discharge voltage across all firing cycles. This reduces coil dwell saturation demands, ensures crisp throttle response, and preserves catalytic converter health.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100% style=\" border-collapse: collapse border: solid font-size: min-width:\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;\"\u003e1990-1996 Subaru Legacy\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;\"\u003eEJ22, EJ22T, EJ25D \/ BC, BF, BD, BG\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;\"\u003e130-160 hp \/ 137-181 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;\"\u003e174EAA59-UF159\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1990-1996 Subaru Legacy 2.2L\u003c\/li\u003e\n  \u003cli\u003e1991-1994 Subaru Legacy 2.2L Turbo\u003c\/li\u003e\n  \u003cli\u003e1996 Subaru Legacy 2.5L\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the BC\/BD Legacy?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1990-1996 Subaru Legacy equipped with the \u003cstrong\u003eEJ22\u003c\/strong\u003e, \u003cstrong\u003eEJ22T\u003c\/strong\u003e, or \u003cstrong\u003eEJ25D\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre spark plug wires included in this refresh kit?\u003c\/strong\u003e\u003cbr\u003e No, this kit includes the direct-mount coil pack and four spark plugs; reuse your existing high-tension leads or install new OEM-spec wires.\u003c\/p\u003e\n\n\u003ch3\u003eThe Subaru Performance Standard\u003c\/h3\u003e\n\u003cp\u003ePreserve boxer engine harmonics and dependable power delivery across the entire rev range. Designed to meet or exceed strict OEM electrical tolerances, this ignition kit keeps your flat-four operating smoothly on both daily commutes and spirited mountain passes.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50625926168824,"sku":"DS-EMPJUS896","price":67.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-subaru-legacy-1990-1996-2-2l-2-5l-1.jpg?v=1790352965","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-spark-plugs-for-subaru-legacy-1990-1996-2-2l-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}