lowblustang00

I have an 08GT with a little over 80,000 mi., and am looking at replacing the plugs and coils in the near future.

So, I understand that a change was made in production in 08 in the plugs and coils. How will this effect my searching for replacements? If it helps my current coils have 3L3E on the top of them.

Am I going to need the Lisle tool for broken spark plugs?

Any recommendations on replacement coils and plugs? I have been looking at LMR's package of MSD coils and Motor Craft plugs.

Thanks for the input!

m05fastbackGT

This topic has been covered time and time again.. Consider doing a thread search and you'll find plenty of posts that were submitted from previous threads..

07 Boss

Why do you need to replace your coils?

lowblustang00

Preventive mostly. Just had issues with another vehicle recently that turned out to be a bad coil, and wanted to go ahead and head off similar issues in the mustang.

lowblustang00

But that just seems so impersonal. ;-)

There are many posts on procedure. I was just hoping for some quick tips, and insight on what plugs and coils others have gone with.

m05fastbackGT

That wasn't my intention, I was just trying to point out there are plenty of posts that have been submitted in the past that address the very same questions regarding the 3v head and spark plug design change from 2007-2008..

Therefore I'll provide you with the very same answers as you would've found from some of the previous threads submitted..

Ford changed the spark plug and head design beginning in mid 2008 from the high threaded 16mm 2 piece design plugs and went back to the traditional 12mm 1 piece design plug thanks to the dreaded 16mm 2 piece design plugs that were known for breaking inside the heads and had to be extracted with the Lisle extraction tool.. When Ford changed the plug design, they also had to change the head design as well in order to accommodate the revised plug design..

How you can tell the difference is by the coil boot.. As all 2005-early 2008 models have the black coil boots and all mid 2008-2010 models all have the revised brown coil boots..

Anyhow hope this addresses your questions and concerns..

07 Boss

Stock coils and plugs is your best bet. If you are highly modified I would look into maybe changing the plugs to colder ones. Just after you do the swap pull your plugs occasionally and clean them. Don't let them sit in there for another 80K miles, especially if you have the older style high thread plugs.

lowblustang00

Thanks guys