Volkswagen Coolant Reservoir / Tank / Bottle 5QM121407C

The OEM Coolant Reservoir Tank (Part Number: 5QM121407C) is a critical component for maintaining optimal engine cooling performance, positioned strategically within the engine compartment of your Volkswagen model. This expansion tank is designed to hold excess coolant, allowing for thermal expansion and contraction while preventing coolant loss, which is vital for engine efficiency. Compatible with various models including the 2020 Volkswagen GTI, Golf, Jetta, and 2019 Atlas, this reservoir supports engines ranging from the 1.4L L4 gas to the 3.6L V6. Common issues resolved by replacing a worn or damaged coolant reservoir include leaks, cracks, or failure to hold pressure, which can lead to overheating. For reference, alternative part numbers include 5Q0121407F, 5Q0121407D, and 5Q0121407S, ensuring you find the exact fit for your vehicle. This factory-original part guarantees seamless integration into your vehicle’s cooling system, ensuring reliability and performance.