{"product_id":"dorman-917-255-engine-variable-valve-timing-vvt-sprocket","title":"Dorman 917-255 Engine Variable Valve Timing (VVT) Sprocket","description":"\u003ch2\u003eOverview of Dorman Engine Variable Valve Timing Sprocket\u003c\/h2\u003e\u003cp\u003eThe Dorman 917-255 Engine Variable Valve Timing (VVT) Sprocket is designed for reliable performance in select Buick, Chevrolet, GMC, Isuzu, and Oldsmobile vehicles. This silver zinc-plated steel sprocket offers a standard replacement option engineered to meet OEM specifications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from durable steel with silver zinc plating for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eStandard replacement grade ensuring consistent engine timing performance\u003c\/li\u003e\n\u003cli\u003eOverall height of 5.8 inches and length of 2.73 inches for precise fitment\u003c\/li\u003e\n\u003cli\u003eIncludes M10 x 1.5 cam shaft bolt for secure installation\u003c\/li\u003e\n\u003cli\u003eCompatible with multiple models including Buick Rainier, Chevrolet Trailblazer, GMC Envoy, and more\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 917-255 VVT sprocket is manufactured from high-quality steel with a silver zinc-plated finish to resist wear and corrosion over time. Its dimensions—5.8 inches in height and 2.73 inches in length—are engineered to match the exact specifications required for proper variable valve timing operation. This part is a standard replacement grade component, providing a reliable solution for maintaining engine timing accuracy in vehicles equipped with variable valve timing systems.\u003c\/p\u003e\u003cp\u003eIncluded with the sprocket is an M10 x 1.5 cam shaft bolt, ensuring a secure and proper fit during installation. This VVT sprocket is compatible with a range of vehicles, including Buick Ascender and Rainier, Chevrolet Bravada, Trailblazer, Trailblazer EXT, GMC Envoy, Envoy XL, Envoy XUV, and Isuzu models, as well as Oldsmobile vehicles that utilize this part number.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper variable valve timing function in affected engines\u003c\/li\u003e\n\u003cli\u003eResolves engine performance issues related to worn or damaged VVT sprockets\u003c\/li\u003e\n\u003cli\u003eEliminates timing chain noise caused by faulty sprocket components\u003c\/li\u003e\n\u003cli\u003ePrevents engine misfires and rough idling linked to timing irregularities\u003c\/li\u003e\n\u003cli\u003eSupports overall engine efficiency and emissions control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure engine is cool before beginning installation to avoid injury\u003c\/li\u003e\n\u003cli\u003eUse the included M10 x 1.5 cam shaft bolt to secure the sprocket properly\u003c\/li\u003e\n\u003cli\u003eVerify alignment marks on the sprocket and timing chain for accurate timing setup\u003c\/li\u003e\n\u003cli\u003eConsult vehicle-specific service manual for torque specifications and detailed procedures\u003c\/li\u003e\n\u003cli\u003eInspect related timing components for wear during replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 917-255 VVT sprocket undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship. Refer to official Dorman documentation for exact warranty terms.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":44329775562933,"sku":"BKKY-917-255","price":171.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_917255_Fro_e3e564ad-681c-478c-864f-dafb4afef031.jpg?v=1775012305","url":"https:\/\/www.partcatalog.com\/products\/dorman-917-255-engine-variable-valve-timing-vvt-sprocket","provider":"PartCatalog","version":"1.0","type":"link"}