{"product_id":"ignition-coil-spark-plugs-for-chevrolet-tahoe-1996-2000-5-7l","title":"Ignition Coil + Spark Plugs for Chevrolet Tahoe (1996-2000) 5.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eOEM-Grade Ignition Coil and Spark Plug Kit for 1996-2000 Chevrolet Tahoe (GMT400)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Ignition Coil and Spark Plug Kit restores primary and secondary ignition performance on the 1996-2000 Chevrolet Tahoe to eliminate misfires, stabilize idle, and maximize combustion efficiency under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Tahoe Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eFactory ignition coils on the \u003cstrong\u003eGMT400\u003c\/strong\u003e platform endure persistent heat soak due to close proximity to the exhaust manifolds on the \u003cstrong\u003eL31 Vortec 5700\u003c\/strong\u003e V8. Over extended heat cycles, the stock epoxy potting degrades, causing internal winding breakdown, arc-through, and intermittent high-load misfires (DTC P0300). Simultaneously, extended service intervals erode factory plug electrodes, widening the spark gap beyond factory tolerance and overtaxing the coil's secondary reserve voltage.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct replacement service kit includes a heavy-duty single ignition coil and eight pre-gapped, thermally matched spark plugs. The coil features premium magnetic laminations and temperature-resistant potting compound to resist dielectric punch-through under high thermal stress. Paired with corrosion-resistant spark plugs designed for optimal heat dissipation and flame-kernel propagation, this kit directly supersedes OEM part numbers \u003cstrong\u003e10489421\u003c\/strong\u003e and \u003cstrong\u003eD577\u003c\/strong\u003e to deliver dependable start-up and consistent spark energy across all eight combustion chambers.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100% style=\" border-collapse: collapse border: solid font-size: min-width:\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 Tahoe\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;\"\u003e5.7L V8 L31 \/ GMT400\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;\"\u003e255 hp \/ 330 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;\"\u003e10489421, D577, 19207138, DR49T\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1996-1999 Chevrolet Tahoe 5.7L V8\u003c\/li\u003e\n  \u003cli\u003e2000 Chevrolet Tahoe 5.7L V8 (Tahoe Classic \/ GMT400 platform only)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT400 Tahoe?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1996-2000 Chevrolet Tahoe equipped with the L31 5.7L Vortec engine.\u003c\/p\u003e\n\n\u003ch4\u003eShould I check the spark plug gaps before torquing?\u003c\/h4\u003e\n\u003cp\u003eYes, always verify the plug gaps against factory specifications (nominal 0.060 inch) prior to threading into the iron cylinder heads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Tahoe Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eWhen pulling heavy trailers or navigating steep grades, reliable secondary ignition voltage is critical to avoid fuel wash and high-load detonation in your small-block V8.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67518813536504,"sku":"DS-EXV3KP23N","price":74.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-spark-plugs-for-chevrolet-tahoe-1996-2000-5-7l-1.jpg?v=1790370487","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-spark-plugs-for-chevrolet-tahoe-1996-2000-5-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}