Description
Coolant Reservoir for Audi (Part No: 4M0121403G) is a genuine OEM expansion tank designed to store and regulate coolant within the engine cooling system. It allows coolant to expand and contract with temperature changes while maintaining proper system pressure, ensuring optimal engine performance and preventing overheating.
Manufactured to Audi’s strict quality standards, this reservoir is made from durable, heat-resistant plastic and features precise connections for seamless integration with the cooling system.
Compatibility:
- Audi Q7 (4M)
- Audi Q8
- Audi A6 / A7 (C8)
- Suitable for multiple petrol & diesel engine variants













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