Am I right on thinking that most under-bonnet plastics (air boxes, fuse box covers, etc.) in mass-production cars will be made of ABS plastic?

Or am I on the wrong track!?

there is a lot of GFPA66, ie glass filled nylon 66, there are many other materials depending on the temp, there are recycle codes on all new parts so you can find out what they are made of,..

hth

Cheers Howard... will see if I can find any codes on the piece I want to work on.