{"product_id":"ignition-coil-spark-plugs-for-chevrolet-express-1996-2000-5-7l","title":"Ignition Coil + Spark Plugs for Chevrolet Express (1996-2000) 5.7L","description":"\u003ch2\u003eDirect-Replacement Ignition Coil and Spark Plug Kit for 1996-2000 Chevrolet Express\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Ignition Coil + Spark Plug Kit restores primary spark energy and consistent combustion across all cylinders on the 1996-2000 Chevrolet Express to eliminate misfires and restore throttle response under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Express Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eUnder heavy cargo loads and high underhood temperatures, the factory single-coil setup on the \u003cstrong\u003eGMT600\u003c\/strong\u003e platform suffers severe heat soak. The OEM epoxy insulation breaks down over time, introducing micro-fractures in the internal coil windings. This leads to dielectric breakdown, secondary voltage drops, and severe spark blowout under load. Paired with aged, fouled plugs operating at widened gaps, the system triggers \u003cstrong\u003eP0300\u003c\/strong\u003e random misfire codes, rough idle, poor fuel economy, and incomplete combustion in demanding duty cycles.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-fit kit replaces worn ignition hardware with high-grade components designed to meet or exceed OEM specifications. The high-output replacement ignition coil features high-grade copper primary and secondary windings encased in premium dielectric epoxy to combat thermal degradation and shorting. Paired with precision-gapped, wear-resistant spark plugs, this kit stabilizes spark discharge at high cylinder pressures, lowers duty-cycle stress on the electrical system, and ensures clean flame-front propagation across the \u003cstrong\u003eVortec 5700 L31\u003c\/strong\u003e combustion chambers.\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;\"\u003e1996-2000 Chevrolet Express\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\u003eVortec 5700 L31\u003c\/strong\u003e \/ \u003cstrong\u003eGMT600\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;\"\u003e250 hp \/ 335 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\u003e10489421\u003c\/strong\u003e, \u003cstrong\u003e19207138\u003c\/strong\u003e, \u003cstrong\u003e19418996\u003c\/strong\u003e, \u003cstrong\u003e8104894210\u003c\/strong\u003e, \u003cstrong\u003eD577\u003c\/strong\u003e, \u003cstrong\u003eDR-49\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\u003e1996 Chevrolet Express 1500 \/ 2500 \/ 3500 5.7L V8\u003c\/li\u003e\n  \u003cli\u003e1997 Chevrolet Express 1500 \/ 2500 \/ 3500 5.7L V8\u003c\/li\u003e\n  \u003cli\u003e1998 Chevrolet Express 1500 \/ 2500 \/ 3500 5.7L V8\u003c\/li\u003e\n  \u003cli\u003e1999 Chevrolet Express 1500 \/ 2500 \/ 3500 5.7L V8\u003c\/li\u003e\n  \u003cli\u003e2000 Chevrolet Express 1500 \/ 2500 \/ 3500 5.7L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the GMT600 Express?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1996-2000 Chevrolet Express equipped with the \u003cstrong\u003eVortec 5700 L31\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need to gap these spark plugs prior to installation?\u003c\/strong\u003e\u003cbr\u003e While pre-gapped, always verify with a feeler gauge to ensure the gap matches factory 0.060-inch specifications before torquing.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Fleet Utility Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle the constant thermal cycling and sustained load demands of heavy commercial hauling and fleet service, this ignition kit maintains consistent arc duration without voltage dropoff during maximum payload operations.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50622904303864,"sku":"DS-EUPZFBGYP","price":64.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-chevrolet-express-1996-2000-5-7l-1.jpg?v=1790276702","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-spark-plugs-for-chevrolet-express-1996-2000-5-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}