sp 515 the plug i need?
07-23-2014, 10:14 PM
#11
Senior Member
Thread Starter
I'm at 60k also. I have a lisle tool, and really am not that scared about the plug change.
07-24-2014, 01:07 AM
#12
Senior Member
Powerranger, I *thought* Ford might have changed the heads in 07 or 08? I could be completely wrong but I thought they changed where the plug sat and sticks. My understanding is that 07+, you shouldn't run into the issue at all. I'm sure someone can correct me if I'm wrong on that (or maybe early 07's were affected). If that's true, that'll be a nice and easy relief. My 05 I got lucky but the rear plugs were a PITA to get at! I definitely didn't want them breaking.
Update: I looked and found the TSB, note the dates they mention.
Update: I looked and found the TSB, note the dates they mention.
Last edited by homer; 07-24-2014 at 01:15 AM. Reason: Pulled TSB and attached
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powerranger262 (07-24-2014)
07-24-2014, 07:16 AM
#13
Senior Member
Thread Starter
I remember skimming over that build date info, I'll take a look at my tag today. Maybe i will get lucky.
03-04-2020, 01:39 AM
#14
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My understanding of the plugs is as follows....
SP515 old breakable plugs. Using them will not effect how the engine runs. It is when you go to take them out
SP546 are for the 5.4 3v V8. The newest plugs for that engine
SP547 are for the 4.6l V8 and the newest one for that engine
Note- I did not read all threads too see if someone had already posted this info
SP515 old breakable plugs. Using them will not effect how the engine runs. It is when you go to take them out
SP546 are for the 5.4 3v V8. The newest plugs for that engine
SP547 are for the 4.6l V8 and the newest one for that engine
Note- I did not read all threads too see if someone had already posted this info
