What is this engine part?

I bought this bad boy with the k&n air intake upgrade. What is the circled thing behind it. I thought this was typically an empty spot under the hood.

 

here's the photo

 

ABS pump. Welcome to TW!

 

Thanks @NAAC3TACO. Would that be a default location or did it get moved? I noticed that some people put batteries or compressors there. I'd like to take that space if possible.

 

That's where it's located on my 2014 SR5. I may be wrong, but on TRD Off Road models it may be in a different location. Maybe someone will chime in and confirm or deny that.

 

Yeah go ahead and move it to put a compressor there. Do a build thread while you are at it cause it's going to be interesting as hell. Lol welcome to TW

 

ABS Controller and pump assembly. Do not move it, it would be a pain in the @ss to move.

 

TRDOR will have it integrated into the power brake booster / master cylinder assembly on the driver's side.

 

Thanks! I thought they were different.