S3 (2002) Underside engine covers

[UpTheIron]

I've just had to remove what is left of the plastic cover around the offside underside of the engine after what I can only assume is one speed hump too many. I still have the nearside cover in place. These both hang vertically and look as if there should be a underside cover joining the two and covering the whole belly of the engine.

Can anyone confirm if this is the case, and where might sell me replacements?