Looking to do some preventive maintenance on my 05 5.4 and I'd like to replace the fuel injectors with the upgraded part. looking at Tasca's website, they list a 'fuel injector' for $35 and a 'fuel injector assembly' for $25. does anyone know the difference between the two? part numbers are:

5C3Z-9F593-DC and 5C3Z-9F593-DCFC, respectively.

 

I did a search and the part number 5C3Z9F593DCFC did not show as valid.
This part number is valid 5C3Z9F593DC. It is for the injector you want.

 

Thanks for searching. Strange that Tasca shows two different things here:

http://www.tascaparts.com/?p=catalog...3Z-9F593-DC%20