{"product_id":"ignition-coil-spark-plugs-for-buick-reatta-1990-1991-3-8l-v6","title":"Ignition Coil \u0026 Spark Plugs for Buick Reatta (1990-1991) 3.8L V6","description":"\u003ch2\u003eHigh-Output Ignition Coil \u0026amp; Spark Plugs for 1990-1991 Buick Reatta\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eRestores ignition reliability and combustion efficiency:\u003c\/strong\u003e Replaces failing OEM DIS coil packs and worn spark plugs to eliminate misfires, rough idling, and hesitation under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Reatta Ignition Weakness\u003c\/h3\u003e\n\u003cp\u003eThe early GM 3800 Series I ignition systems, particularly the original \"Magnavox\" style or aging Type I DIS coil packs, are notorious for thermal degradation over time. Subjected to decades of under-hood heat cycling in the GM E-Body engine bay, the epoxy potting compound inside the factory coils eventually cracks. This allows moisture intrusion and internal arcing, which leads to weak spark delivery, intermittent cylinder misfires, and a noticeable loss of low-end torque. Combined with fouled or worn copper spark plugs, this severely impacts the overall efficiency, emissions, and drivability of the 3.8L V6 engine.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition kit overhauls the DIS system by pairing three robust replacement ignition coils with six high-quality NGK spark plugs. The upgraded coils are manufactured under strict ISO\/TS16949 quality standards, featuring high-dielectric epoxy and heavy-duty internal copper windings that resist heat soak and prevent voltage leakage. By utilizing state-of-the-art manufacturing equipment, these coils deliver a consistently hot, precise spark across all RPM ranges. The included NGK spark plugs feature superior metallurgy to ensure optimal gap retention and efficient flame kernel growth. The result is immediate throttle response, stabilized idle, and restored fuel economy without triggering OBD1 diagnostic codes.\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;\"\u003e1990-1991 Buick Reatta\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;\"\u003e3800 Series I V6 (LN3\/L27) \/ GM E-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;\"\u003e165-170 hp \/ 210-220 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;\"\u003eC849SPEC \/ 10467067 \/ D545\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1990 Buick Reatta Base 3.8L V6\u003c\/li\u003e\n  \u003cli\u003e1991 Buick Reatta Base 3.8L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Buick Touring Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for the demands of classic American luxury touring, this ignition overhaul restores the smooth, effortless power the legendary 3800 V6 is known for, ensuring reliable performance and crisp throttle response on every drive.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50066448384248,"sku":"DS-E4N5G6A5C","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-reatta-1990-1991-3-8l-v6-1.jpg?v=1785285126","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-spark-plugs-for-buick-reatta-1990-1991-3-8l-v6","provider":"Performance Chip Tuning","version":"1.0","type":"link"}