Ford Quick Tips: #46 What To Inspect Everytime You Remove a 5.4L 2v Intake Manifold
These are your Intake Manifold options if you find yours is cracked:
Ford- http://www.amazon.com/gp/product/B000NS1A8K/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B000NS1A8K&linkCode=as2&tag=fordt-20&linkId=CJJGQQXNWY6YUOJP
Dorman-
http://www.amazon.com/gp/product/B003QVJ79K/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B003QVJ79K&linkCode=as2&tag=fordt-20&linkId=QF2MDN2Y6D25GJN6
Injector O-rings you will need when replacing the intake-(2 sets needed)
http://www.amazon.com/gp/product/B000C5HECA/ref=as_li_tl?ie=UTF8&camp=1789&creative=390957&creativeASIN=B000C5HECA&linkCode=as2&tag=fordt-20&linkId=HY5OKK2VPJBPJ3KX
In this video we go over one very important key item to inspect whenever you remove this intake.