Can someone please tell me what seal this is? I ordered a gasket kit and it came with it but I searched all the part numbers in the kit and nothing showed this part. Half way threw my build and don't want to continue until I know..please help!

 

lol gasket for what lol? What gaskets are you changing?

 

"Halfway threw my build" ...I am rebuilding my whole engine. I bought a gasket kit. Complete gasket overhaul kit. No where online does it list what this seal is for. That I could find anyway.

 

oil fill cap bro. it's not a gasket though.

 

Maybe the oil filler cap?