This is a genuine VAG coolant reservoir, part number 5Q0121407M. Designed to meet the exact specifications of your vehicle's cooling system, this reservoir plays a crucial role in maintaining optimal engine temperature. Proper functioning of the coolant reservoir is essential for preventing overheating and ensuring the longevity of your engine. It holds the excess coolant and allows for expansion and contraction due to temperature changes, while also providing a visual indicator of the coolant level. Crafted from durable materials, this VAG reservoir is built to withstand the harsh conditions under the hood, resisting cracks and leaks. Replacing a damaged or leaking reservoir promptly is vital to avoid potential engine damage and costly repairs.
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