{"product_id":"ignition-coil-spark-plugs-for-buick-riviera-1991-1999-3-8l-v6","title":"Ignition Coil \u0026 Spark Plugs for Buick Riviera (1991-1999) 3.8L V6","description":"\u003ch2\u003eReliable Ignition Coil \u0026amp; Spark Plugs for 1991-1999 Buick Riviera\u003c\/h2\u003e\n  \n  \u003cp\u003e\u003cstrong\u003eThis complete ignition service kit replaces degraded factory coils and fouled plugs to restore spark energy, resolve misfires, and stabilize idle on the 3800 V6.\u003c\/strong\u003e\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Stock Riviera Ignition Weakness\u003c\/h3\u003e\n  \u003cp\u003eThe 3800 V6 waste-spark ignition system is notorious for coil pack housing degradation due to constant thermal cycling directly above the engine block. Heat soak breaks down the internal epoxy potting, leading to carbon tracking, erratic secondary resistance values, and weak spark delivery. Over time, worn spark plug electrodes exacerbate the issue, forcing aging coil packs to work harder, which induces hesitation under load and triggers P0300-series misfire codes.\u003c\/p\u003e\n  \n  \u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n  \u003cp\u003eThis replacement ignition suite utilizes high-dielectric epoxy and reinforced thermoplastic housings to withstand the extreme thermal environment of the E-Body engine bay. The internal copper windings feature optimized turn ratios for consistent voltage output under high cylinder pressures, critical for both naturally aspirated and supercharged variants. Paired with 6x NGK spark plugs featuring precision-engineered ground electrodes and high-alumina ceramics, this kit ensures complete combustion events. Certified to strict ISO\/TS16949 standards, the components provide robust dielectric strength, eliminating voltage leaks while restoring baseline fuel economy and throttle response.\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;\"\u003e1991-1999 Buick Riviera\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 V6 (L27, L36, L67) \/ 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;\"\u003e170-240 hp \/ 220-280 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;\"\u003eD555, C849, 10467067\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n \n  \u003ch3\u003eCompatibility\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e1991 Buick Riviera 3.8L V6\u003c\/li\u003e\n    \u003cli\u003e1992 Buick Riviera 3.8L V6\u003c\/li\u003e\n    \u003cli\u003e1993 Buick Riviera 3.8L V6\u003c\/li\u003e\n    \u003cli\u003e1995 Buick Riviera 3.8L V6\u003c\/li\u003e\n    \u003cli\u003e1996 Buick Riviera 3.8L V6\u003c\/li\u003e\n    \u003cli\u003e1997 Buick Riviera 3.8L V6\u003c\/li\u003e\n    \u003cli\u003e1998 Buick Riviera 3.8L V6\u003c\/li\u003e\n    \u003cli\u003e1999 Buick Riviera 3.8L V6\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch3\u003eThe Buick Grand Touring Standard\u003c\/h3\u003e\n  \u003cp\u003eFor a flagship luxury coupe that demands smooth power delivery, maintaining peak spark energy ensures the 3800 V6 provides the seamless acceleration and rock-solid reliability the Riviera badge represents.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50066450153720,"sku":"DS-EF528MOTL","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-riviera-1991-1999-3-8l-v6-1.jpg?v=1785285241","url":"https:\/\/performancechiptuning.com\/es\/products\/ignition-coil-spark-plugs-for-buick-riviera-1991-1999-3-8l-v6","provider":"Performance Chip Tuning","version":"1.0","type":"link"}