{"product_id":"ignition-coil-iridium-spark-plugs-wire-for-chevrolet-avalanche-2002-2006-5-3l","title":"Ignition Coil \u0026 Iridium Spark Plugs \u0026 Wire for Chevrolet Avalanche (2002-2006) 5.3L","description":"\u003ch2\u003eDirect-Fit High-Output Ignition Service Kit for 2002-2006 Chevrolet Avalanche\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Delivers a complete secondary ignition overhaul to eliminate high-load misfires, restore lost combustion efficiency, and stabilize idle across all eight cylinders.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Avalanche Ignition Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe factory round-style ignition coils and secondary wiring on the GMT800 platform endure prolonged thermal cycling within crowded engine bays. Over time, internal epoxy insulation breaks down, causing primary and secondary winding short circuits under high-load towing. Concurrently, factory carbon-core plug wires degrade internally from heat soak, driving resistance upward and choking spark voltage. Coupled with worn plug electrodes, this increased impedance induces chronic P0300 multi-cylinder misfires, unburnt hydrocarbon build-up, sluggish throttle response, and degraded fuel economy under payload.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive tune-up kit restores ignition integrity using eight heavy-duty UF262\/D585 round-style coils with epoxy-potted windings, integrated heatsinks, and dielectric silicone boots to prevent high-voltage arcing. Paired with 8mm spiral-wound stranded copper-core wires, secondary resistance drops dramatically while heat-shielded stainless steel terminals deflect manifold radiant heat. The included 41-962 fine-wire iridium spark plugs feature laser-welded tips that resist electrical erosion, providing a precise, concentrated flame kernel and dependable ignition across demanding duty cycles.\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;\"\u003e2002-2006 Chevrolet Avalanche 1500 5.3L\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 5300 (LM7 \/ L59) \/ GMT805 (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;\"\u003e285-295 hp \/ 325-335 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, 19299585, 12192195, 9748GG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2002-2006 Chevrolet Avalanche 1500 5.3L V8 (Confirm original coils feature the round UF262 \/ D585 body style)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Chevrolet Heavy-Duty Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet the rigors of heavy hauling and trailering, this ignition setup maintains consistent spark saturation under sustained high-manifold-pressure conditions, keeping your Vortec powertrain performing reliably on the job site or highway.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50498309292280,"sku":"DS-EKI1H3N6P","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-avalanche-2002-2006-5-3l-1.jpg?v=1789265993","url":"https:\/\/performancechiptuning.com\/products\/ignition-coil-iridium-spark-plugs-wire-for-chevrolet-avalanche-2002-2006-5-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}