{"product_id":"ignition-coil-spark-plugs-for-buick-century-1989-1993-3-3l-v6","title":"Ignition Coil \u0026 Spark Plugs for Buick Century (1989-1993) 3.3L V6","description":"\u003ch2\u003eDirect-Replacement Ignition Coil \u0026amp; Spark Plugs for 1989-1993 Buick Century\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it does:\u003c\/strong\u003e Restores proper ignition timing, spark intensity, and fuel combustion efficiency for the GM 3300 V6, eliminating misfires and rough idling.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Century Ignition Weakness\u003c\/h3\u003e\n\u003cp\u003eThe original GM 3300 (LG7) coil packs and standard factory spark plugs degrade significantly over thousands of thermal cycles. The factory epoxy resin used in OEM coils is prone to micro-cracking under prolonged engine bay heat soak. This structural degradation allows internal arcing and parasitic voltage drops, leading to weak spark delivery. Over time, this results in intermittent misfires, unburnt fuel damaging the catalytic converter, increased emissions, and a noticeably sluggish throttle response, especially under load or during damp weather conditions.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition overhaul kit includes ISO\/TS16949-certified ignition coils and premium NGK spark plugs engineered to surpass original equipment tolerances. The redesigned coil packs feature upgraded secondary copper windings and high-dielectric epoxy potting, specifically formulated to resist thermal breakdown and eliminate voltage leaks. Combined with the precise gap, advanced ceramic insulators, and superior thermal conductivity of the NGK plugs, this setup ensures consistent spark duration and optimal flame kernel growth. The result is a highly efficient combustion event, stabilizing idle RPM, maximizing fuel economy, and ensuring reliable startup performance even under demanding electrical loads.\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;\"\u003e1989-1993 Buick Century\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;\"\u003eLG7 3300 V6 \/ GM A-Body\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;\"\u003e160 hp \/ 185 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;\"\u003eD545, 10467067, C849, 3IC102, 5192\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1989 Buick Century 3.3L V6\u003c\/li\u003e\n  \u003cli\u003e1990 Buick Century 3.3L V6\u003c\/li\u003e\n  \u003cli\u003e1991 Buick Century 3.3L V6\u003c\/li\u003e\n  \u003cli\u003e1992 Buick Century 3.3L V6\u003c\/li\u003e\n  \u003cli\u003e1993 Buick Century 3.3L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Buick Restoration Standard\u003c\/h3\u003e\n\u003cp\u003eWhether you are daily driving your A-Body sedan or conducting long-term maintenance, this ignition kit restores the smooth, reliable drivability and effortless cruising power that traditional American V6 platforms demand.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50066444681464,"sku":"DS-EL5X77TN6","price":109.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-buick-century-1989-1993-3-3l-v6-1.jpg?v=1785284864","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-spark-plugs-for-buick-century-1989-1993-3-3l-v6","provider":"Performance Chip Tuning","version":"1.0","type":"link"}