INA Variable Valve Timing VVT Sprocket Camshaft Phaser

The INA Variable Valve Timing (VVT) Sprocket, also called a camshaft phaser, camshaft adjuster or cam phaser, is an engine timing component that adjusts camshaft timing while the engine runs. It lets the engine control module advance or retard valve events to match engine speed and load, which supports power delivery, fuel efficiency and emissions control.

Key Features:

• Precision-engineered VVT sprocket and phaser assembly for adjustable camshaft timing
• Designed to the specifications of original equipment timing drive systems
• Hydraulically actuated phaser design that responds to engine oil pressure and ECM control
• Manufactured by INA, part of the Schaeffler Group, a long-standing OE supplier of engine timing components
• Built for durability, with tightly controlled tolerances for smooth, quiet operation

Worn or failing VVT sprockets can cause rattling at startup, rough idle, reduced performance, poor fuel economy or check engine lights with timing-related fault codes. Replacing the unit restores correct camshaft timing control. Consult the application listing for the exact part, and replace related timing components such as chains, tensioners and guides as needed during installation.