2003 Duramax 6.6 Turbo Diesel

16 yr. old grandson was nice enough to take out my air filter and clean it. I told him to take it to the air compressor and blow it out. He's a dirt bike kid. So he thought it would get really clean if he sprayed it with his air filter cleaner he uses for his dirt bike filter (which is oil bath type filter). The cleaner smells like started fluid.

I thought he was just going the blow it out and left him to complete the job.

He puts the filter back in the box and starts the engine. The hood was still up and it exploded and blew all the hoses and plastic parts into 50 pieces. It shot pieces 10 to 15 yards out. Also put 2 dents in the hood.

Found and replaced all parts except the plasic cover on top the engine that has the 6.6 Turbo Diesel logo. Any help in finding this last part??