{"product_id":"ignition-coil-and-iridium-spark-plugs-for-chevrolet-colorado-2007-2012-2-9l","title":"Ignition Coil and Iridium Spark Plugs for Chevrolet Colorado (2007-2012) 2.9L","description":"\u003ch2\u003eOEM-Grade Ignition Coil and Iridium Spark Plug Kit for 2007-2012 Chevrolet Colorado\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Ignition Coil and Iridium Spark Plug Kit replaces degraded factory ignition components on the 2007-2012 Colorado to eliminate cylinder misfires, restore factory combustion efficiency, and stabilize rough idle.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Colorado Thermal Breakdown Problem\u003c\/h3\u003e\n\u003cp\u003eFactory coil-on-plug units on the \u003cstrong\u003eGMT355\u003c\/strong\u003e chassis operate in a demanding thermal environment alongside the cylinder head of the \u003cstrong\u003eVortec 2900 (LLV)\u003c\/strong\u003e inline-four. Over tens of thousands of thermal cycles, engine bay heat soak degrades the internal epoxy potting and copper primary windings, inducing internal dielectric breakdown, secondary resistance drift, and intermittent misfires under load (P0300–P0304). Simultaneously, factory plugs suffer electrode erosion and widening gaps, forcing fatigued coils to produce unsustainably high ionization voltages that trigger ignition blowout.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-fit ignition kit restores spark energy using high-dielectric epoxy housings and high-conductivity copper secondary windings engineered to suppress internal arcing and thermal breakdown. Paired with fine-wire iridium spark plugs featuring laser-welded center electrodes, this package significantly lowers required firing voltage while maintaining superior thermal conductivity and flame kernel propagation. Designed as a direct swap for OEM numbers \u003cstrong\u003e12596547\u003c\/strong\u003e, \u003cstrong\u003eUF497\u003c\/strong\u003e, and \u003cstrong\u003e12612369\u003c\/strong\u003e, this matched set ensures precise dwell-time compliance and immediate throttle response without PCM reprogramming.\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;\"\u003e2007-2012 Chevrolet Colorado\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;\"\u003e2.9L LLV I4 \/ GMT355\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;\"\u003e185 hp \/ 190 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;\"\u003e12596547, UF497, 12612369 (MPN: KIN134627TOP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2007-2012 Chevrolet Colorado Base (2.9L L4 LLV)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Chevrolet Colorado LS (2.9L L4 LLV)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Chevrolet Colorado LT (2.9L L4 LLV)\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Chevrolet Colorado WT (2.9L L4 LLV)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the GMT355 Colorado?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2007-2012 Chevrolet Colorado equipped with the LLV 2.9L inline-four engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these iridium plugs pre-gapped for the 2.9L engine?\u003c\/strong\u003e\u003cbr\u003e Yes, the spark plugs are calibrated to factory gap specifications for out-of-the-box installation without manual adjustment.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Durability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle the continuous payload and towing demands of the Colorado platform, this ignition service package resists high-vibration stress and sustained thermal loads across tough work cycles.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50594029601016,"sku":"DS-EJ2Q6ZG96","price":85.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/ignition-coil-and-iridium-spark-plugs-for-chevrolet-colorado-2007-2012-2-9l-1.jpg?v=1790056159","url":"https:\/\/performancechiptuning.com\/fr\/products\/ignition-coil-and-iridium-spark-plugs-for-chevrolet-colorado-2007-2012-2-9l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}