What are these 2 o-rings? (from gasket kit)

[BlackGT97]

need help locating where these 2 o-rings go..have any idea?

[Erik Adam Rodriguez]

kit for what more info plz

[BlackGT97]

head gasket kit from autozone..felpro

[Erik Adam Rodriguez]

just the hg or the lim too

[BillBoost37]

Those should be the same size as the coolant elbows. We typically recommend replacing the entire elbow, and the manufacturer often gives you new rings.

[BlackGT97]

It came with 2 orange o-rings for the elbow bill, and 2 yellow ones that i put on the LIM. These 2 black ones are about the same size but one is thicker.

[FordMan77]

PCV Valve?

[BillBoost37]

You have two elbows.

PCV should only have one on a charged motor. If this was a fel pro set, read the box. It'll tell you what they are expecting.

[DanGTP]

I believe one is for the PCV valve, and the other is for the vacuum tree on top of the SC.