Genuine OEM Volkswagen Quick Acting Coupling, part number 1K0122291CM. This coupling provides a secure and quick connection point for hoses or lines within various vehicle systems. It is located at position 19 in the diagram. The part has dimensions of 0.08m length, 0.04m width, and 0.038m height, with a weight of 0.024 kg. Genuine OEM quick acting couplings are manufactured to exact specifications to ensure a leak-free and secure connection, maintaining the integrity of the cooling system.