Hi guys, got a very basic question.

I'm replacing the heads in my 2000 4.0. Both old heads were cracked so I had to buy remanufactured ones. I've installed them and now working on putting everything back in. Do the spark plugs need any type of o-ring or gasket seal to the head? The new plugs didn't come with anything and there isn't anything in the heads. I did not check if there were seals in the old heads before I took them to the shop. The gasket set I bought came with 6 o-rings but I'm not sure where they are supposed to go.

Thanks in advance!

 

Welcome to the forum

No, no O-rings on those spark plugs

 

Thanks!