I broke and threw out my battery terminal cover about 10 years ago. I saw a couple other threads where other people were missing theirs, so I ended up designing and 3d printing a drop in replacement:

Acura TL 4G (2009-2014) Battery Terminal Cover Door

It's one of the first things I've designed from scratch. It fits tight, and looks better than the gaping hole. Feel free to print your own

 

i like it, great functional print!

 

What material are you using for the print? I'd like to print one and am thinking PETG vs PLA.

 

Ideally you'd want to use ABS/ASA since it's going in the engine compartment and will be pretty warm and toasty... you may/may not get away with PETG, but PLA is not something i'd risk in that environment

 

I suppose it wouldn't be completely inappropriate to say that things get very hot under the covers over there

 

 

Think you Sr. very useful and functional...