VAG Coolant Expansion Tank 5Q0121407Q

This genuine VAG coolant expansion tank, part number 5Q0121407Q, is designed to meet the exact specifications of your vehicle's cooling system. It plays a crucial role in maintaining the correct pressure and allowing for the expansion and contraction of coolant as it heats and cools. Over time, plastic components like expansion tanks can become brittle, crack, or leak, leading to coolant loss and potential engine overheating. Replacing a faulty expansion tank with a high-quality part like this VAG original ensures the integrity of your cooling system and helps prevent costly engine damage. Installation is straightforward for a qualified mechanic, ensuring a perfect fit and function. Trust in VAG genuine parts to maintain your vehicle's performance and reliability.

• Genuine VAG part for guaranteed fit and performance.
• Part Number: 5Q0121407Q
• Direct replacement for original equipment.
• Maintains proper coolant system pressure.
• Monitors coolant level and expansion.
• Durable construction for long-lasting service.
• Helps prevent engine overheating due to coolant loss.