Genuine OEM Audi Inlet Valve, part number 077109601Q. This precision-engineered valve is a fundamental component within the engine's cylinder head, controlling the intake of air or the air-fuel mixture into the combustion chamber. It operates in conjunction with the camshaft and valve springs to open and close at precise intervals during the engine's intake stroke. Crafted from high-strength steel alloy, it measures approximately 0.097 meters in length and weighs 0.059 kg. Choosing a genuine OEM inlet valve ensures factory-specified dimensions, material composition, and heat resistance, which are crucial for maintaining optimal engine compression, performance, and longevity.