{"product_id":"ignition-coil-spark-plugs-for-chevrolet-express-3500-gmc-savana-3500-van-2001-2002-8-1l-v8","title":"Ignition Coil \u0026 Spark Plugs for Chevrolet Express 3500 GMC Savana 3500 Van (2001-2002) 8.1L V8","description":"\u003ch2\u003eComplete Ignition Coil \u0026amp; Spark Plugs for 2001-2002 Chevrolet, GMC Express, Savana\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eRestores critical firing voltage and eliminates engine misfires with a complete performance ignition coil, wire, and spark plug overhaul kit for the 8.1L Vortec V8.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Express, Savana Ignition Weakness\u003c\/h3\u003e\n\u003cp\u003eThe factory GMT600 vans equipped with the massive L18 8.1L engine generate excessive under-hood temperatures due to their highly compact engine bay packaging. Over time, this extreme heat soak degrades the OEM ignition coil epoxy and compromises the spark plug wire silicone jackets. This thermal breakdown leads to internal resistance spikes, micro-arcing to the engine block, and voltage bleed-off. Mechanics often trace sluggish throttle response, erratic idle, and severe heavy-load misfires while towing directly back to these compromised ignition components.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive ignition kit addresses OEM thermal failures by utilizing high-dielectric epoxy resin in the coil packs to resist heat cycling and prevent voltage leakage. The included ignition wires feature an upgraded silicone and fiberglass braided jacket, shielding the conductive core from radiant exhaust manifold heat while maintaining optimal current flow. Coupled with properly gapped spark plugs designed for low-emission, high-energy output, this assembly guarantees maximum spark energy reaches the combustion chamber. The result is restored engine efficiency, a stabilized idle, and consistent pulling power under heavy loads without the risk of grounding out.\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;\"\u003e2001-2002 Chevrolet, GMC Express, Savana\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;\"\u003eL18 Vortec 8100 \/ GMT600\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;\"\u003e340 hp \/ 455 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;\"\u003eD580, 12556450, UF192, C1144, 5C1078\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2001 Chevrolet Express 3500 8.1L V8\u003c\/li\u003e\n  \u003cli\u003e2002 Chevrolet Express 3500 8.1L V8\u003c\/li\u003e\n  \u003cli\u003e2001 GMC Savana 3500 8.1L V8\u003c\/li\u003e\n  \u003cli\u003e2002 GMC Savana 3500 8.1L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Chevrolet, GMC Durability Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt for the rigorous demands of 1-ton hauling and fleet usage, these ignition upgrades ensure consistent towing reliability and robust power delivery, keeping your work van on the road and out of the service bay.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50065384603896,"sku":"DS-EXYU4L1D9","price":239.95,"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-3500-gmc-savana-3500-van-2001-2002-8-1l-v8-1.webp?v=1785257129","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-spark-plugs-for-chevrolet-express-3500-gmc-savana-3500-van-2001-2002-8-1l-v8","provider":"Performance Chip Tuning","version":"1.0","type":"link"}