{"product_id":"timing-belt-tensioner-38667-for-freightliner-new-cascadia-dd15-trucks-2012-2024","title":"Timing Belt Tensioner 38667 for Freightliner New Cascadia DD15 Trucks (2012–2024)","description":"\u003ch3 data-start=\"325\" data-end=\"347\"\u003eProduct Overview\u003c\/h3\u003e\n\u003cp data-start=\"349\" data-end=\"412\"\u003e\u003cstrong data-start=\"349\" data-end=\"363\"\u003ePart Name:\u003c\/strong\u003e Engine Timing \/ Accessory Drive Belt Tensioner\u003c\/p\u003e\n\u003cp data-start=\"417\" data-end=\"441\"\u003e\u003cstrong data-start=\"417\" data-end=\"433\"\u003ePart Number:\u003c\/strong\u003e 38667\u003c\/p\u003e\n\u003cp data-start=\"446\" data-end=\"926\"\u003e\u003cstrong data-start=\"446\" data-end=\"472\"\u003eVehicle Compatibility: \u003c\/strong\u003eDesigned for \u003cstrong data-start=\"488\" data-end=\"517\"\u003eFreightliner New Cascadia\u003c\/strong\u003e trucks equipped with the \u003cstrong data-start=\"543\" data-end=\"566\"\u003eDetroit Diesel DD15\u003c\/strong\u003e engine platform, covering model years \u003cstrong data-start=\"605\" data-end=\"618\"\u003e2012–2024\u003c\/strong\u003e. This tensioner maintains stable belt tension across the engine’s accessory drive system, ensuring consistent operation of the alternator, coolant pump, fuel pump and air-conditioning compressor. It is an OEM-equivalent component used across DD15 applications in long-haul and heavy-duty freight operations.\u003c\/p\u003e\n\u003cp data-start=\"931\" data-end=\"1385\"\u003e\u003cstrong data-start=\"931\" data-end=\"949\"\u003eConfiguration: \u003c\/strong\u003eConstructed with a reinforced steel pulley, high-load sealed bearing and a precision-calibrated internal torsion spring, the tensioner provides controlled belt pressure and smooth rotation under high-torque and high-temperature operating cycles. The assembly is engineered to minimize belt vibration, prevent slippage, reduce pulley noise and stabilize accessory loads even during rapid changes in engine speed or thermal conditions.\u003c\/p\u003e\n\u003cp data-start=\"1390\" data-end=\"1707\"\u003e\u003cstrong data-start=\"1390\" data-end=\"1403\"\u003eFunction: \u003c\/strong\u003eMaintains constant belt tension to preserve correct engine timing input and ensure efficient operation of auxiliary systems. The tensioner enhances engine efficiency, prevents premature belt wear, improves accessory longevity and supports reliable, uninterrupted performance for long-haul freight use.\u003c\/p\u003e\n\u003ch3 data-start=\"1709\" data-end=\"1739\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp data-start=\"1741\" data-end=\"1785\"\u003e\u003cstrong data-start=\"1741\" data-end=\"1750\"\u003eType:\u003c\/strong\u003e Heavy-duty belt tensioner pulley\u003c\/p\u003e\n\u003cp data-start=\"1790\" data-end=\"1905\"\u003e\u003cstrong data-start=\"1790\" data-end=\"1803\"\u003eMaterial:\u003c\/strong\u003e Heat-treated steel pulley with high-durability sealed bearing and corrosion-resistant tensioner arm\u003c\/p\u003e\n\u003cp data-start=\"1910\" data-end=\"2028\"\u003e\u003cstrong data-start=\"1910\" data-end=\"1926\"\u003eApplication:\u003c\/strong\u003e Fits Freightliner New Cascadia trucks using Detroit Diesel DD15 engines matching OE reference 38667\u003c\/p\u003e\n\u003cp data-start=\"2033\" data-end=\"2218\"\u003e\u003cstrong data-start=\"2033\" data-end=\"2053\"\u003eCross-Reference:\u003c\/strong\u003e Interchangeable with tensioners sharing the same pulley diameter, bracket geometry, spring force and belt-track alignment specifications used in DD15 applications\u003c\/p\u003e\n\u003cp data-start=\"2223\" data-end=\"2402\"\u003e\u003cstrong data-start=\"2223\" data-end=\"2240\"\u003eInstallation:\u003c\/strong\u003e Replace when belt squeal, wobble, pulley noise, vibration, misalignment or tension irregularities are observed; recommended during major belt service intervals\u003c\/p\u003e\n\u003cp data-start=\"2407\" data-end=\"2533\"\u003e\u003cstrong data-start=\"2407\" data-end=\"2428\"\u003eService Interval:\u003c\/strong\u003e Typically replaced every 160,000–240,000 km depending on load profile, climate and drive-cycle frequency\u003c\/p\u003e\n\u003ch3 data-start=\"2535\" data-end=\"2564\"\u003eDelivery \u0026amp; Availability\u003c\/h3\u003e\n\u003cp data-start=\"2566\" data-end=\"2627\"\u003e\u003cstrong data-start=\"2566\" data-end=\"2584\"\u003eStock Options:\u003c\/strong\u003e Belt tensioners available in ready stock\u003c\/p\u003e\n\u003cp data-start=\"2632\" data-end=\"2677\"\u003e\u003cstrong data-start=\"2632\" data-end=\"2650\"\u003eDelivery Time:\u003c\/strong\u003e 3–7 days internationally\u003c\/p\u003e","brand":"CBT Auto Parts","offers":[{"title":"Default Title","offer_id":48118978838770,"sku":"62466346245","price":658.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/0406\/2450\/files\/H0cc5de1929b94ae196a24ae187bf65c3T.webp?v=1762430379","url":"https:\/\/cbtautoparts.com\/products\/timing-belt-tensioner-38667-for-freightliner-new-cascadia-dd15-trucks-2012-2024","provider":"CBT Auto Parts","version":"1.0","type":"link"}