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  #1  
Old 04-05-2012, 01:24 PM
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Best spark plug?

Soon to be doing a plug change on my '07 5.4 and wondered what's the best plug to go with?
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  #2  
Old 04-05-2012, 01:26 PM
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Quote:
Originally Posted by Brandon Miller View Post
Soon to be doing a plug change on my '07 5.4 and wondered what's the best plug to go with?
Motorcraft SP515.

Or, Champion 7989 for a one-piece.

Get new boots! Get a Lisle 65600! Read the TSB and the many plug removal threads first.

Good luck!

MGD
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  #3  
Old 04-05-2012, 01:26 PM
glc glc is offline
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Motorcraft SP-515.
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  #4  
Old 04-05-2012, 01:53 PM
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Motorcraft SP-515
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  #5  
Old 04-05-2012, 02:10 PM
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hplail NINJAROD
What about for the 2v 4.6? Is SP-493 the correct/best plug?
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  #6  
Old 04-05-2012, 02:11 PM
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Originally Posted by DSGSTX81 View Post
What about for the 2v 4.6? Is SP-493 the correct/best plug?
Correct perhaps ( MC SP493 - single plat), but the best is Denso Iridium IT-16.


MGD

Last edited by MGDfan; 04-05-2012 at 02:14 PM.
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  #7  
Old 04-05-2012, 02:38 PM
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Motorcraft SP-515
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  #8  
Old 04-05-2012, 02:55 PM
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I wrote a how to in the technical articles section. It might help simplify the process for you. I would go with the sp- 515.
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  #9  
Old 04-05-2012, 03:26 PM
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hplail NINJAROD
MGD,

Are the Iridiums worth the extra money? They are supposed to be lifetime plugs, aren't they?

And for the other two responses,

Are the SP-515s worth the spark on my lil 2v 4.6? I know they recommended them for the 5.4, but they are two piece and I'm a little leery of that, even though I know my engine doesn't have the plug issues the 5.4 suffered....
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  #10  
Old 04-05-2012, 04:59 PM
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4.6 is completely different than 5.4 plugs.
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  #11  
Old 04-05-2012, 05:02 PM
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Thanks everyone. Best part is the local Oreily has them For $7.99 each.
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  #12  
Old 04-05-2012, 06:33 PM
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Quote:
Originally Posted by DSGSTX81 View Post
MGD,

Are the Iridiums worth the extra money? They are supposed to be lifetime plugs, aren't they?

And for the other two responses,

Are the SP-515s worth the spark on my lil 2v 4.6? I know they recommended them for the 5.4, but they are two piece and I'm a little leery of that, even though I know my engine doesn't have the plug issues the 5.4 suffered....
Hey bud - as was pointed out, you don't have the issues the 3V's have - nor do you use the same plug.

You'll be just fine with the single-plat SP-493 Motorcraft. The iridium plug is pricey and you'll likely never know the difference in a stock truck. I was just answering yer question, lol. Save yer coin.

Remember - 28 ft-lbs , dry. Use dielectric properly in the boots.

Good luck!


MGD
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  #13  
Old 04-05-2012, 09:08 PM
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hplail NINJAROD
Thanks MGD, and Lifted. I'll save the money I would've used on those iridium plugs and put it towards a Magnaflow muffler or something lol

Brandon,

Sorry to have jacked your thread, and glad to hear you found the plugs.
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  #14  
Old 04-25-2012, 12:55 PM
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Ah no- I just went to Oreily and they gave me Motorcraft SP-415 for my 04 5.4L (non-heritage). But what y'all are saying is I need SP-515? Man, this is annoying because I gave them all my info including VIN per their request. Oh well. C'est la vie.

Last edited by gcwaterski; 04-25-2012 at 01:21 PM.
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  #15  
Old 04-25-2012, 01:46 PM
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Quote:
Originally Posted by gcwaterski View Post
Ah no- I just went to Oreily and they gave me Motorcraft SP-415 for my 04 5.4L (non-heritage). But what y'all are saying is I need SP-515? Man, this is annoying because I gave them all my info including VIN per their request. Oh well. C'est la vie.
yep....sp515
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Old 04-25-2012, 01:46 PM


 
 
 
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