Intake manifold gasket restrictor insert

[marc.knobel.9]

Included with the FEL-PRO intake manifold gasket set is a "manifold restrictor insert". On the package it states "Important - Before assembly read fit (Fel-pro Installation tips) included with this set". There was not one included. I searched their website, online and other forums without finding  any info.

They are two pieces of stamped metal with a hole in the center them. They attach together and fit into the intake gasket and restrict the flow through the EGR passage way.   What engines require them?

[thefarmboy21]

Only the stock replacement gaskets have them. The next step up that most people use don't even have the holes in the gaskets. Not sure if you actually need them. Do it the same as the ones you took off is my opinion.

[BADAZ chevy guy]

I agree with Thefarmboy21. I would always use them if OEM did. And I wouldn't if they didn't. Always seamed to work for me.

[Captkaos]

If you heads have holes in them for the EGR you need those to restrict the EGR gas passover if you are using an EGR.