I am going to be putting a new intake on my truck as I have a small coolant leak that I can smell. I know from experience that when I pull the injectors to switch them to the new intake that the small plastic "caps" that are at the base of the injector are usually cracked. I would also like to replace all the O-rings while I am in there.
So does anyone know where I can buy a kit that will have new plastic caps and O-rings?

1999 Expedition 5.4

 

http://www.ebay.com/itm/V8-5-4L-4-6L-Fuel-Injector-Service-Repair-Kit-/251866485761?fits=Year%3A1999%7CModel%3AExpedition&hash=item3aa4699401&vxp=mtr

 

It may be worth your while to buy the cheap sonic cleaner from Harbor Freight and a bottle of Purple Power. It does an amazing job on injectors.

To remove the little screen filter, use a wood screw and pliers.