Ok I am getting the parts together for my cdr delete system and need to know the size of this hole/grommet. I finally got the filter canister done and a place on the frame to mount it. If it works as it should I will move the outlet hose up on to the driverside valve cover. I figure it will be better off up there when I can finally get around to the custom manifold/turbo set up in the future.

 

the hole should be 1.5". The inside diameter of the grommet is 1 3/8". Hope that helps.

 

Yes it does, thank you. I figured one of you guys would have that info lol. One thing about having the truck lifted is it is harder to get up there to check that sorta thing lol.