W211 AMG Discuss the W211 AMG's such as the E55 and the E63
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Where can I buy some NGK LFR7AIX plugs??

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Old 02-11-2011, 11:15 PM
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E55
Where can I buy some NGK LFR7AIX plugs??

I can't seem to locate these anywhere. My source just let me know they are on backorder. I'm hoping to find an online retailer that has them for a fair price for a set of 16. I had a deal with ngksparkplugs@hotmail for $106 shipped. My local auto parts store has them for $11 each.

If anyone knows a good source, please let me know.

Thanks,
Todd
Old 02-11-2011, 11:46 PM
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Originally Posted by Todd Edge
I can't seem to locate these anywhere. My source just let me know they are on backorder. I'm hoping to find an online retailer that has them for a fair price for a set of 16. I had a deal with ngksparkplugs@hotmail for $106 shipped. My local auto parts store has them for $11 each.

If anyone knows a good source, please let me know.

Thanks,
Todd
just got a set for 7.85 a piece @ Amazon, not sure i bought the last set though. Order was split,they came from different places.
Old 02-12-2011, 12:43 AM
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Evo VIII/E55 AMG
Just got mine at o riley auto parts for $6.99 a piece.
Old 02-12-2011, 08:09 AM
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2004 E55 AMG
Originally Posted by LOCO 05' E55
just got a set for 7.85 a piece @ Amazon, not sure i bought the last set though. Order was split,they came from different places.
Same here. 14 from one place and 2 from the other.
Old 02-12-2011, 10:26 AM
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E55 AMG
Originally Posted by Evolved8
Just got mine at o riley auto parts for $6.99 a piece.
Ditto, O'Reilly, $6.99.
Old 02-12-2011, 04:03 PM
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E55
Originally Posted by jmb614
Ditto, O'Reilly, $6.99.
I called my local O'Reilly's and they are $10.99/plug...

Thanks,
Todd
Old 02-12-2011, 06:30 PM
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2008 ML63 2009 SL63 2010 Alpha 7 GTR
Originally Posted by Todd Edge
I called my local O'Reilly's and they are $10.99/plug...

Thanks,
Todd
Like everyone else said, check amazon.
Old 02-12-2011, 10:30 PM
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E55 AMG
Originally Posted by Todd Edge
I called my local O'Reilly's and they are $10.99/plug...

Thanks,
Todd
Ask them to price match the Columbus store.
Old 02-12-2011, 11:27 PM
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E55
Thanks for the advice. I finally got Auto Zone to pricematch and I'll have the new plugs in a few days.

Thanks,
Todd
Old 03-22-2011, 02:40 PM
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2005 E55
Any updates on how these are running in the cold?I just ordered a set also from sparkplugsauto.com and it came to 118 shipped for 16 of them.
Old 03-22-2011, 02:47 PM
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04 E55 AMG, 03 350z Track Built/Single Turbo
These are one step colder plugs?
Old 03-22-2011, 03:17 PM
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E55
I ran them Feb-current with no issues. They did fine in the cold and I ran them the other day when it was 82 with no issues. Huge pickup in power. I've never said that and always rolled my eyes when others said it but, it really was a noticeable gain.

Yes - they are 1 step colder.

Todd
Old 03-22-2011, 03:37 PM
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Originally Posted by Todd Edge
Huge pickup in power.
Forgive my ignorance. How would a one-step colder heat range spark plug create a huge pickup in power?
Old 03-22-2011, 03:39 PM
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E55
I don't think it has to do with being a heat range cooler. I think it is just due to the fact that 60K plugs were pulled out and fresh plugs installed. The old plugs looked well worn...
Old 03-22-2011, 03:42 PM
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04 CLK 320 > CLK32K
Try Amazon, pretty cheap
Old 03-22-2011, 07:14 PM
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E55 AMG
Being a heat range 7 plug would this be better for higher ambient temps and higher boost applications?
Old 03-22-2011, 08:57 PM
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2006 E55 AMG
Colder plugs are recomended when increasing the boost to prevent detonation. I am getting my set and going to paint my valve covers while I am at it too
Old 03-22-2011, 09:01 PM
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'04 E55 AMG
http://ngksparkplugs.ecrater.com/p/7...idium-ix-spark

just purchase 2 sets and you're good to go.

looks like those cant be purchased..

http://ngksparkplugs.ecrater.com/p/4...idium-ix-spark

and get 4 sets

Last edited by vietjdmboi; 03-22-2011 at 09:04 PM.
Old 03-22-2011, 09:10 PM
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
Plug heat range

has nothing to do with ambient air temp.
If you increased your boost,increased your timing,or modified power upwards
go one step colder. Otherwise leave it alone a stock engine will not benefit a bit.
Old 03-22-2011, 10:15 PM
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2005 E55
How much heat do you guys think we drop with these?has anyone checked there egts with a colder plug?
Old 04-07-2011, 10:43 PM
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2005 subaru wrx sti
NGK Iridium IX LFR7AIX Spark Plugs (4)

Hi - I have a set of 4 plugs new in the box. I was going to try these (1 step colder), but my dealer said to stick w/ stock. So i'll sell these if anyone makes me a decent offer.

-Chris
603-320-6047
Old 04-08-2011, 01:11 AM
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2005 E55 AMG
I need to buy some of these as well...but I have to wait for this government budget crisis to be over before I do so...lol.
Old 04-08-2011, 01:28 AM
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2005 E55 AMG
BTW- Rock Auto has them for $6.64
Old 06-28-2011, 03:58 PM
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E55 AMG, 72' Toyota Carina, 63' Ford F100, 72' Mercedes 250c, 15' Harley Davidson Softail
just a heads up if anyone still needs these, sparkplugauto.com has them for $108shipped.
Old 03-21-2012, 01:04 PM
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CLS55 AMG
they are currently 6.56 each on sparkplugauto.com... anyone have a cheaper source?


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