{"product_id":"standard-ignition-vvt571-engine-variable-valve-timing-vvt-sprocket","title":"Standard Ignition VVT571 Engine Variable Valve Timing (VVT) Sprocket - Intake (Left)","description":"\u003ch2\u003eOverview of Standard Ignition VVT571 Engine Variable Valve Timing Sprocket\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition VVT571 is a precision-engineered engine variable valve timing (VVT) sprocket designed for select Subaru models. This crankshaft gear component ensures accurate timing control for optimal engine performance in vehicles like the Subaru Forester, Outback, and WRX STI.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEngine variable valve timing sprocket for precise timing control\u003c\/li\u003e\n\u003cli\u003eDurable metal gear construction for long-lasting performance\u003c\/li\u003e\n\u003cli\u003eCrankshaft gear type with 48 teeth and 4 timing marks\u003c\/li\u003e\n\u003cli\u003eInside diameter of 1.24 inches (31.496 mm) and outside diameter of 5.05 inches (128.27 mm)\u003c\/li\u003e\n\u003cli\u003eThickness and tooth width of 1.71 inches (43.434 mm)\u003c\/li\u003e\n\u003cli\u003eSingle mounting hole with a lug hole diameter of 0.48 inches (12.192 mm)\u003c\/li\u003e\n\u003cli\u003eNon-adjustable design without keyway notch\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Standard Ignition VVT571 sprocket is crafted from metal to provide reliable durability and consistent performance in the valve train system. This crankshaft gear type sprocket features 48 teeth and 4 timing marks, which are critical for maintaining precise engine variable valve timing. With an inside diameter of 1.24 inches and an outside diameter of 5.05 inches, it fits securely on the crankshaft of compatible Subaru engines. The sprocket’s thickness and tooth width of 1.71 inches ensure proper engagement with the timing chain, contributing to smooth engine operation.\u003c\/p\u003e\u003cp\u003eDesigned specifically for Subaru models including the Baja, Forester, Impreza, Legacy, Outback, and WRX STI, the VVT571 part number matches exact OEM specifications. This ensures compatibility and helps maintain factory performance standards without the need for adjustments or additional hardware, as no mounting hardware is included.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRestores proper variable valve timing function in Subaru engines\u003c\/li\u003e\n\u003cli\u003eResolves timing chain slippage or misalignment problems\u003c\/li\u003e\n\u003cli\u003eEliminates engine performance issues related to worn or damaged sprockets\u003c\/li\u003e\n\u003cli\u003ePrevents rough idling and poor fuel efficiency caused by timing errors\u003c\/li\u003e\n\u003cli\u003eSupports smooth engine start-up and acceleration response\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnsure engine is cool and battery disconnected before installation\u003c\/li\u003e\n\u003cli\u003eVerify compatibility with Subaru model and engine year prior to replacement\u003c\/li\u003e\n\u003cli\u003eUse proper tools to remove the old sprocket and install the VVT571 securely\u003c\/li\u003e\n\u003cli\u003eCheck timing marks alignment carefully to maintain correct valve timing\u003c\/li\u003e\n\u003cli\u003eConsult vehicle service manual for torque specifications and detailed procedures\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eStandard Ignition parts are manufactured to meet or exceed OEM standards, providing reliable fit and function. The VVT571 sprocket undergoes rigorous quality control to ensure durability and performance in demanding engine environments. While specific warranty details may vary, Standard Ignition typically offers coverage against defects in material and workmanship to support customer confidence in their purchase.\u003c\/p\u003e","brand":"Standard Ignition","offers":[{"title":"Default Title","offer_id":44721079058613,"sku":"FBHK-VVT571","price":258.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/SI_VVT571_Fro_3e9876bc-bb4d-4d24-b9dd-83ce084d8860.jpg?v=1775096040","url":"https:\/\/www.partcatalog.com\/products\/standard-ignition-vvt571-engine-variable-valve-timing-vvt-sprocket","provider":"PartCatalog","version":"1.0","type":"link"}