{"product_id":"standard-ignition-vvt821-engine-variable-valve-timing-vvt-sprocket","title":"Standard Ignition VVT821 Engine Variable Valve Timing (VVT) Sprocket","description":"\u003ch2\u003eEngine Variable Valve Timing Sprocket\u003c\/h2\u003e\u003cp\u003eStandard Ignition VVT821 is an engine variable valve timing sprocket for select GM applications. It is built for vehicles that rely on precise cam timing control, including Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, GMC Savana 3500, Chevrolet Corvette, Chevrolet Silverado 1500, and GMC Sierra 1500 fitments.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEngine variable valve timing sprocket for timing system service\u003c\/li\u003e\n\u003cli\u003eStandard Ignition VVT821 replacement part number\u003c\/li\u003e\n\u003cli\u003eDirect fit coverage for select Chevrolet and GMC models\u003c\/li\u003e\n\u003cli\u003eCross-reference part numbers include 35-1920 and 12689341\u003c\/li\u003e\n\u003cli\u003eFits applications across 2019-2024 model years\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition VVT821 is a variable valve timing sprocket used in the engine valve train to control camshaft timing based on engine operating conditions. On GM applications such as the Chevrolet Silverado 1500 and GMC Sierra 1500, as well as Chevrolet Corvette, Express van, and Savana van platforms, this component supports the timing strategy required for smooth operation and proper engine performance. This part cross-references 35-1920 and 12689341 for the same application. Standard Ignition VVT821 is a practical replacement choice when servicing the timing system on 2019-2024 Chevrolet and GMC vehicles.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestoring variable valve timing function after sprocket wear or failure\u003c\/li\u003e\n\u003cli\u003eAddressing cam timing faults that trigger engine warning lights\u003c\/li\u003e\n\u003cli\u003eCorrecting rough idle or drivability issues tied to timing control\u003c\/li\u003e\n\u003cli\u003eReplacing a noisy or sticking VVT sprocket during engine repair\u003c\/li\u003e\n\u003cli\u003eSupporting proper timing response on GM VVT-equipped engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify engine code, timing chain condition, and OE part number before installation. Because this is a valve train timing component, follow factory service procedures for cam timing alignment and torque specifications. Confirm the exact vehicle application for your Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, GMC Savana 3500, Chevrolet Corvette, Chevrolet Silverado 1500, or GMC Sierra 1500 before ordering.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eStandard Ignition is a recognized aftermarket brand for engine management and ignition components. VVT821 is listed with confirmed interchange references and vehicle-specific fitment data for 2019-2024 Chevrolet and GMC applications.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":52827912372405,"sku":"FBHK-VVT821","price":185.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_VVT821_Fro.jpg?v=1784612858","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-vvt821-engine-variable-valve-timing-vvt-sprocket","provider":"PartCatalog","version":"1.0","type":"link"}