Whats behind this bolt?

[Stewsta]

I have a oil leak coming from this bolt on the oil pump and have no idea what's behind it if anything. I was assuming pressure relief spring?

 

[bm02tj]

That is a mounting bolt
see if you can source gaskets and and oring and re seal
as it could be either gasket leaking into the bolt hole

 

[A383Wing]

no, that's just one of the 4 mounting bolts to hold pump to block. I would say either the large o-ring between outer housing and main body is bad, or possible gasket between body & block....either way, pump has to come off

 

[Stewsta]

Perfect. One more leak to fix on this fresh rebuild. Thanks guys

 

[Meep-Meep]

I'd be looking further up for an oil leak. Not uncommon for oil to start from something like a valve cover and end up dripping from a low spot. Clean the area really well so you can find the oil trail.

 

[dvw]

Clean the area very well and blow dry. Puff some baby power on it and see where the oil wicks from. The only reason I could think that this bolt is leaking is it is too long and bottomed out.
Doug