My 05's got 182000 kms on it now. So the extended ford warrenty on the injectors is up. I'm trying to decide which injectors to replace them with. Rockauto has a few different options. The motorcraft injectors have part # 5C3E-9F593-DB. They also have a brand called ULTRAPOWER, which is about $70 cheaper for the set. What do you guys recommend?

 

Motorcraft. The ones at rockauto are the improved ones.

 

I was under the impression they were the improved ones as well. But from what I have found searching the forum it sounds like the improved ones have part number 5C3Z-9F593-DC.