Wells 3T1009 Engine Variable Valve Timing (VVT) Sprocket Cam Phaser

The Wells 3T1009 Engine Variable Valve Timing (VVT) Sprocket, also called a VVT actuator, cam phaser or camshaft timing sprocket, is a replacement part for engines with variable valve timing. It mounts on the camshaft and lets the engine adjust cam timing while it runs.

Key Features:

• Toothed sprocket mounted on the camshaft. It generally has two parts: the timing sprocket and a second section that moves independently of it.
• Works with the VVT solenoid. When the solenoid sends oil pressure to the sprocket, the actuator advances or retards camshaft timing. This allows finer control of the intake and exhaust valves.
• Helps support lower emissions and better fuel economy by controlling the flow of fuel and exhaust gases through the combustion chamber.
• Wells states that its VVT sprockets are engineered and thermal-shock tested to match OE parts in fit, form and function.
• Cross-reference: OE number 14310-RAA-A01 (per third-party listings).

A worn VVT sprocket can cause rattling or clattering noises at startup, hard starting, reduced power at higher speeds, or a check engine light. Replacing it with a Wells unit helps restore correct cam timing.