Genuine OEM Audi Engine Camshaft Adjuster Unit, part number 077109088P. This complex component actively adjusts the camshaft timing, optimizing valve overlap and lift to enhance engine power, fuel economy, and reduce emissions across various RPMs. It is an integral part of the engine's valvetrain, often incorporating chain tensioning and guiding elements. Weighing 0.985 kg, this unit combines mechanical and hydraulic precision. Choosing a genuine OEM camshaft adjuster ensures exact timing calibration, proper oil pressure response, and long-term reliability, crucial for sophisticated variable valve timing systems.