Genuine OEM Audi Engine Non-Return Valve, part number 06H103156. This critical valve is designed to prevent the reverse flow of fluids or gases within specific engine systems, maintaining correct pressure and ensuring proper lubrication or ventilation. It is integrated into the engine assembly. Made from durable plastic, it weighs approximately 0.01 kg. Choosing a genuine OEM non-return valve guarantees precise operation and material compatibility, vital for protecting engine components and maintaining optimal performance.