{"product_id":"ignition-coil-platinum-spark-plugs-for-kia-sephia-1998-2004-1-8l","title":"Ignition Coil + Platinum Spark Plugs for Kia Sephia (1998-2004) 1.8L","description":"\u003ch2\u003eDirect-Fit Ignition Coil and Platinum Spark Plug Kit for 1998-2004 Kia Sephia\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The ignition coil and platinum spark plug kit replaces aged factory secondary ignition components on the 1998-2004 Kia Sephia to eliminate misfires, stabilize idle combustion, and restore factory throttle response.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Kia Sephia Ignition Coil Heat Degradation\u003c\/h3\u003e\n\u003cp\u003eThe factory 2-coil wasted-spark configuration on the \u003cstrong\u003eT8D\u003c\/strong\u003e 1.8L engine mounts the coil packs directly above the cylinder head spark plug wells. Over thousands of thermal cycles, engine bay heat soak degrades the internal epoxy potting and copper winding insulation of the original coils. This breakdown leads to secondary voltage leakage, internal shorting, and high electrical resistance, manifesting as intermittent misfires, hesitations under load, and carbon tracking along the plug boots. Concurrently, factory copper core plugs suffer rapid electrode gap erosion, increasing required arc voltage past what weak factory coils can supply.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement kit resolves ignition breakdown by pairing two high-dielectric replacement coil packs with four precision-gapped platinum spark plugs. The ignition coils feature premium copper windings insulated with high-grade epoxy to resist thermal cracking and voltage punch-through under high-RPM dwell times. The accompanying platinum spark plugs provide superior thermal conductivity and corrosion resistance over standard nickel-copper alloys. The fine-wire platinum center electrode requires lower ionization voltage to jump the gap, reducing secondary winding stress on the coils while generating a concentrated, stable flame kernel for complete fuel atomization.\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;\"\u003e1998-2004 Kia Sephia\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\u003eT8D\u003c\/strong\u003e 1.8L DOHC \/ \u003cstrong\u003eFB\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;\"\u003e125 hp \/ 108 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\u003eUF253\u003c\/strong\u003e, \u003cstrong\u003eC1181\u003c\/strong\u003e, \u003cstrong\u003eC-504\u003c\/strong\u003e, \u003cstrong\u003eIC214\u003c\/strong\u003e, \u003cstrong\u003eGN10307\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\u003e1998 Kia Sephia 1.8L L4 Base, LS, GS\u003c\/li\u003e\n  \u003cli\u003e1999 Kia Sephia 1.8L L4 Base, LS, GS\u003c\/li\u003e\n  \u003cli\u003e2000 Kia Sephia 1.8L L4 Base, LS\u003c\/li\u003e\n  \u003cli\u003e2001 Kia Sephia 1.8L L4 Base, LS\u003c\/li\u003e\n  \u003cli\u003e2002 Kia Sephia 1.8L L4 Base, LS\u003c\/li\u003e\n  \u003cli\u003e2003 Kia Sephia 1.8L L4 Base, LS\u003c\/li\u003e\n  \u003cli\u003e2004 Kia Sephia 1.8L L4 Base, LS\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the FB Sephia?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1998-2004 Kia Sephia equipped with the \u003cstrong\u003eT8D\u003c\/strong\u003e 1.8L DOHC engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to gap these platinum spark plugs before installation?\u003c\/strong\u003e\u003cbr\u003e Plugs come pre-gapped to OEM specification, but verifying factory gap with a feeler gauge prior to threading is recommended practice.\u003c\/p\u003e\n\n\u003ch3\u003eThe Kia Commuter Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for everyday drivability and thermal resilience, this ignition system kit eliminates hesitations and hard-start conditions to maintain reliable, fuel-efficient operation across the daily service life of your commuter vehicle.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50622925701368,"sku":"DS-EWUHQ9OML","price":84.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-platinum-spark-plugs-for-kia-sephia-1998-2004-1-8l-1.jpg?v=1790276979","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-platinum-spark-plugs-for-kia-sephia-1998-2004-1-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}