What is this [HPFP]?

[Celex]

What is this? This rusty piece of kit is in the FOS of the engine and looks completely different to the rest of the engine bay and engine which are in much better shape. All is running well, no problems but just want to know its identity. It does not presently leak in any way; it's completely dry. Perhaps some penetrating oil on the bolts attaching it to the main body?

Image attached. Novice would much appreciate any help you can give.


Rob.

 

[Loz]

It's part of the high-pressure fuel pump, they are all like that.

 

[Celex]

Thank you for the quick response. Wonder why it happens as it does! Still reassuring to hear I'm not alone in having this occur.

Rob.