Expansion Tank (1.8 2.0 TFSI TDI) (Audi A4 / A5 / Q5) is listed as an auto-part option. Confirm fitment, part number and compatibility before purchase, especially where vehicle-specific matching is required.
Expansion Tank (1.8, 2.0 TFSI, TDI) (Audi A4 / A5 / Q5) is a crucial component for managing the cooling system’s coolant overflow and pressure regulation in these Audi models. Positioned to accommodate engines with 1.8 and 2.0 litre TFSI and TDI configurations, this expansion tank helps maintain optimal engine temperature by providing a reservoir for excess coolant.
This part is designed specifically for Audi A4, A5, and Q5 vehicles, making it essential to compare the existing tank’s shape, connection points, and size when considering a replacement. Ensuring compatibility with your engine type and vehicle model range is a key buying consideration before purchase.
The expansion tank plays an important role in preventing coolant loss and engine overheating by allowing coolant to expand and contract safely under heat cycles. Its proper functioning supports the integrity of the cooling system and overall engine performance. When searching for this part, confirming the engine type (1.8 or 2.0 TFSI or TDI) and vehicle model helps identify the correct item.
- Compatible Audi models: A4, A5, Q5
- For 1.8 and 2.0 litre TFSI and TDI engines
- Handles coolant overflow and pressure regulation
Need help matching this item to your vehicle? Use more Fuel Tank, Vehicle Parts Finder or Request a Part with your VIN, engine number, part number or clear photos.





