Help identifying a part

[REO]

Hi what is the name of the following part:

 

[FJ40Jim]

Illustration # 22560

MAGNET ASSY, OVER INJECTION
22560-56040 12V W/O EDIC 1 $292.42

 

[1911]

Do you have another photo from farther away that shows the whole thing?

EDIT: Never mind; Jim to the rescue.

 

[REO]

Thanks guys!

 

[JoeDiesel]

Illustration # 22560

MAGNET ASSY, OVER INJECTION
22560-56040 12V W/O EDIC 1 $292.42

This looks exactly what I've been trying to track down. All I get from my Euro 4x4 source is that it's discontinued. Do I need this? What does it do? The Euro4x4 guy described what sounded like a fuel boost during start up. 1979 BJ40 from Costa Rica.