{"product_id":"ignition-coil-iridium-spark-plugs-wire-for-chevrolet-silverado-1500-2500-2500hd-3500-1999-2007-4-8l-5-3l-6-0l","title":"Ignition Coil \u0026 Iridium Spark Plugs \u0026 Wire for Chevrolet Silverado 1500 2500 2500HD 3500 (1999-2007) 4.8L 5.3L 6.0L","description":"\u003ch2\u003eHigh-Output Round D585 Ignition Service Kit for 1999-2007 Chevrolet Silverado\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e Restores factory secondary ignition voltage and prevents secondary breakdown across the cylinder banks on GM Vortec V8 applications.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Silverado Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eFactory ignition coils and plug wires on GMT800 platform trucks routinely suffer from thermal cycling fatigue. Situated directly above the cast-iron exhaust manifolds, factory ignition leads endure extreme radiant heat soak that degrades silicone boots, dries out dielectric insulation, and introduces high resistance. Over time, internal epoxy potting in aging OE coils develops micro-fractures, prompting internal arcing, erratic secondary discharge under load, and intermittent P0300 misfires during sustained heavy towing. Worn factory plugs increase arc gap resistance, which strains primary ignition drivers and accelerates coil deterioration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis complete ignition overhaul kit utilizes high-saturation D585\/UF262 round-body ignition coils featuring vacuum-infused epoxy potting and 4-pin direct-fit connectors to resist dielectric breakdown. Paired with 8mm dual-layer silicone spark plug wires built with stranded copper cores and stainless steel thermal terminal heat shields, the assembly isolates secondary voltage paths against manifold heat soak up to 450°F. The included fine-wire 41-962 iridium spark plugs provide stable flame kernel propagation and reduced quenching, delivering steady combustion pressure and reliable cold-start arc stability.\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;\"\u003e1999-2007 Chevrolet Silverado\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;\"\u003eVortec 4.8L (LR4), 5.3L (LM7\/L59\/L33), 6.0L (LQ4\/LQ9) \/ GMT800\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;\"\u003e270-345 hp \/ 285-380 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;\"\u003eUF262, D585, 41-962, 12622553, 19299585\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1999-2006 Chevrolet Silverado 1500:\u003c\/strong\u003e 4.8L V8, 5.3L V8, 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2007 Chevrolet Silverado 1500 Classic:\u003c\/strong\u003e 4.8L V8, 5.3L V8, 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e1999-2000 Chevrolet Silverado 2500:\u003c\/strong\u003e 5.3L V8, 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2001-2006 Chevrolet Silverado 2500 HD:\u003c\/strong\u003e 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2007 Chevrolet Silverado 2500 HD Classic:\u003c\/strong\u003e 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2001-2006 Chevrolet Silverado 3500:\u003c\/strong\u003e 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2007 Chevrolet Silverado 3500 Classic:\u003c\/strong\u003e 6.0L V8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cem\u003eNote:\u003c\/em\u003e Requires round-body D585\/UF262 coil brackets. Does not replace square Melco UF271 coils.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Chevrolet Hauling Caliber\u003c\/h3\u003e\n\u003cp\u003eMaintains consistent dwell-time recovery and maximum secondary kilovolt output under heavy payload and grade-towing conditions, eliminating cylinder misfire events and preserving catalytic converter efficiency.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50498308112632,"sku":"DS-EEP53RQR4","price":185.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-iridium-spark-plugs-wire-for-chevrolet-silverado-1500-2500-2500hd-3500-1999-2007-4-8l-5-3l-6-0l-1.jpg?v=1789265904","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-iridium-spark-plugs-wire-for-chevrolet-silverado-1500-2500-2500hd-3500-1999-2007-4-8l-5-3l-6-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}