{"product_id":"performance-drive-belt-tensioner-kit-for-chevrolet-colorado-2004-2012-2-9l-3-7l","title":"Performance Drive Belt Tensioner Kit for Chevrolet Colorado (2004-2012) 2.9L 3.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Performance Drive Belt Tensioner Kit for 2004-2012 Chevrolet Colorado (GMT355)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Drive Belt Tensioner Kit replaces worn factory tensioners and belts on the 2004-2012 Colorado to maintain constant accessory belt tension, prevent slippage, and eliminate harmonic vibration under heavy load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Colorado Belt Drive Fatigue\u003c\/h3\u003e\n\u003cp\u003eFactory belt tensioners on the \u003cstrong\u003eGMT355\u003c\/strong\u003e platform equipped with \u003cstrong\u003eGM Atlas\u003c\/strong\u003e inline engines utilize an internal torsional spring inside a cast housing prone to material fatigue. Over extended duty cycles, vibration and underhood thermal stress cause internal damping pad wear, pivot bushing galling, and spring tension decay. This leads to belt flutter, pulley misalignment, premature belt fraying, and accessory underdrive during heavy electrical or cooling demands.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis replacement kit features an upgraded cast aluminum housing paired with a calibrated high-tensile steel torsional spring designed to resist thermal relaxation. The heavy-duty steel pulley utilizes dual sealed bearings packed with high-temperature synthetic grease to prevent seizure under continuous load. Supplied with an application-matched, multi-rib EPDM serpentine belt reinforced with high-modulus aramid tensile cords, this assembly ensures stable accessory drive operation, prevents belt chirping, and eliminates slippage across the entire engine RPM band.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Serpentine Belt Tensioner with Pulley\u003c\/li\u003e\n  \u003cli\u003e1x Direct-Fit Serpentine Belt\u003c\/li\u003e\n\u003c\/ul\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: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e2004-2012 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, 3.7L LLR I5 \/ 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;\"\u003e185-242 hp \/ 190-242 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;\"\u003eN\/A\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\u003e2004-2012 Chevrolet Colorado 2.9L L4\u003c\/li\u003e\n  \u003cli\u003e2004-2012 Chevrolet Colorado 3.7L L5\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the GMT355 Colorado?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2004-2012 Chevrolet Colorado equipped with the \u003cstrong\u003e2.9L LLV\u003c\/strong\u003e or \u003cstrong\u003e3.7L LLR\u003c\/strong\u003e Atlas engines. \u003cstrong\u003eDoes not fit models equipped with the 5.3L V8 (LH8\/LH9) engine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre any bracket or pulley modifications required for installation?\u003c\/h4\u003e\n\u003cp\u003eNo, this direct-fit kit mounts using existing factory bracket locations and accepts standard shop tools for routine tension release and belt routing.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Truck Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle harsh towing schedules and off-road utility cycles, this drive assembly delivers the sustained mechanical reliability required to keep your Colorado's charging, water pump, and power steering systems operating under high payload conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67547053523192,"sku":"DS-EKKHKD3DY","price":75.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-drive-belt-tensioner-kit-for-chevrolet-colorado-2004-2012-2-9l-3-7l-1.jpg?v=1790740070","url":"https:\/\/performancechiptuning.com\/products\/performance-drive-belt-tensioner-kit-for-chevrolet-colorado-2004-2012-2-9l-3-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}