New coolant expansion tank, also known as a water bottle or radiator overflow bottle to fit your Audi A3 1.8T 20V Turbo Model Years: 1998-2003 Engine Code/s: AGU ARZ. Beta expansion tanks are economical aftermarket replacement parts for your vehicle. You will need to re-use your original radiator cap, as this is not supplied with the bottle. We do recommend purchasing a new radiator cap when replacing your expansion tank

What's in the box
1 x Expansion Tank