I have searched and cannot find anything remotely close to find what manufacturers make spark plugs for the 04-08 5.4L 3V engines. If any of you know if there are different manufacturers for the plugs for our engines I would be very grateful for the information. I would like to do my research on each brand then go from there before I part with my hard earned $$. I appreciate any and all of your help. Also if anybody has specific info in regards as to how the different brands effected the overall performance I would appreciate that info as well. Thank you all!

 

i've not been able to find them either. They are strange looking and apparently like to break off in the head. I am on my second set first at 100k and the second at 150k. First time 2 broke off and the second none. Had the dealer change them because there is an extraction tool for the part that breaks off. If you do it yourself the engine should be hot and you have to coat the new ones with anti seize.

 

Motorcraft..Champion and Brisk too my knowledge.

 

Autolite (motorcraft) and Champion are the only ones I know about. the champion ones are just one piece, autolite are factory 2 piece, and they don't always come out together.

 

OK, next question....
Are the Champion plugs any good? From what I have read online the Brisk plugs seem to need to be replaced every 25k miles. If they are any good I don't mind swapping them out once a year. Does anyone here have personal experience with either the Brisk or Champion plugs? All input is greatly appreciated. Thanks.