Variable Valve Timing (VVT) Sprockets, also known as camshaft phasers, offer technicians a repair solution for higher mileage vehicles and include all necessary components for a complete repair. Designed and manufactured using premium materials. 100% tested and measured for function, fitment, and durability to ensure optimal performance. Test parameters include adjustable angle, leakage, locking pin functionality and friction. Includes new camshaft phaser torque-to-yield (TTY) attachment bolts including valving bolts to ensure proper installation and phaser function. Cloyes recommends replacing the timing chain, tensioners, sprockets, and guides alongside VVT components to maintain system stability and ensure precise engine timing. Trusted by professionals for over a century and backed by an industry-leading warranty and technical support.