Genuine OEM Audi Camshaft Adjuster, part number 022109087J. This critical engine component is responsible for precisely adjusting the intake camshaft timing. It ensures optimal valve lift and duration, contributing to engine performance and fuel efficiency. Weighing approximately 1.11 kg, this unit is built to exact factory specifications. Choosing a genuine OEM camshaft adjuster ensures correct engine calibration, precise timing, and long-term reliability, preventing costly engine damage from incorrect aftermarket parts.