Best spark plug?
Senior Member
Joined: Feb 2004
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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
Senior Member
Joined: Feb 2004
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Correct perhaps ( MC SP493 - single plat), but the best is Denso Iridium IT-16.
MGD
MGD
Last edited by MGDfan; Apr 5, 2012 at 02:14 PM.
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Joined: Dec 2011
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From: Durham, NC
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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....
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....
Senior Member
Joined: Feb 2004
Posts: 10,390
Likes: 10
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....
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....
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
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.
Brandon,
Sorry to have jacked your thread, and glad to hear you found the plugs.
Member
Joined: Feb 2011
Posts: 29
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From: Atlanta, GA
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; Apr 25, 2012 at 01:21 PM.
Technical Article Contributor
Joined: Apr 2009
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From: In the fast lane from LA to Tokyo...
yep....sp515