Guide to Changing the timing belt and water pump on a Fabia Vrs with engine code ASZ. Disclaimer This guide is just that..... A guide I am not a qualified mechanic and this guide is simply a walk through of what I did. If you don’t think you have the mechanical ability to pull this off then please don’t attempt this. It’s very expensive if you get this wrong. If in any doubt, do not attempt. Parts needed Timing belt: 038109119P Tensioner: 038109243M Relay roller 03810924