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Fuel pump question

paulhead

I overtighten $#!t
So I got this Bosch fuel pump, I get the wiring but was wondering what this hole/screw hole is and does it need to be plugged before installing. Looks like where you'd screw a ground wire into but the plug already has that.
 
Compare it to what you take out. Use as directed.
 
As Chilton's and Haynes so informatively advise: Re-assemble in reverse order.
 
I would guess that you are looking at a feature intended for use in another application. Someone probably decided it was cheaper to make that particular pump fit multiple applications rather than make two (or more) separate part numbers.
 
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