spark plug HELP!! - Page 2 - MBWorld.org Forums

Jun 2, 2009 | 02:46 PM

#26

prodigymb

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Joined: Jul 2008

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From: Philly

997TT, C192 GT63, W464 G550, MS Plaid

Quote:

Originally Posted by sneakyneon

Good info, Someone should really contact NGK, Bosch, Denso and Champion and let them know that there puting out the wrong pruduct for our cars. you would also think that with the spark plug shrouded by a 1/4 inch the engine might not run so well but it does.

you are not the first to use shorter plugs - people have done it before. i haven't raed about any issues arising from that......but that doesn't mean that there are none. i wouldn't run the short plugs in my car.

here is an actual short article from ngk... where they give both part numbers and say that plugs are available outside of mercedes dealers.
http://fr.ngk.de/NEW_AFTERMARKET_NGK...UG.2985.0.html

"NGK’s ILFR6A iridium spark plug is now available for fitment to 19 Mercedes models introduced between 2000 and January 2005 ranging from C160 1.8 litre Kompressor to the 5.4 litre SLR McLaren. The actual Mercedes Part Number is A0041591303"

Jun 2, 2009 | 03:01 PM

#27

sneakyneon

Thread Starter

Super Member

Joined: Apr 2009

Posts: 837

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From: Tacoma WA

Bicycle

I just got off the phone with MB, they say the longer one is correct, talked to NGK tech said that they(ngk) have the wrong plug listed and to use the longer one. I started another thread looking to see if anyone has a head off, I just cant imagine an engine running with a plug that far in the hole. The whole issue of this thread was due to massive carbon built up on the treads. leads me to belive theres more to this.

Jun 2, 2009 | 03:33 PM

#28

GRAFH

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Joined: Aug 2008

Posts: 360

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From: Riverwoods, Il

2005 E55 AMG

You have to first consider the website the 2 posted above are distributors not manufacturers website. You were not on ngk's website.

Here is ngk's recommendation > http://www.ngksparkplugs.com/part_fi...gineid=1465954

Their are also 2 different iridiums available from ngk > http://www.ngksparkplugs.com/product...x.asp?mode=nml

The laser iridiums are the oe plugs per ngk. The iridium ix is not even available for the e55.

The ILFR6A is the part # designated for merc by ngk since they are private labeled with the Merc logo on them. Also that link is for ngk europe.

Last edited by GRAFH; Jun 2, 2009 at 03:42 PM.

Jun 2, 2009 | 03:38 PM

#29

WL55

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Joined: May 2009

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E55

Grafh, your link shows IFR5D10 and Prodigy shows ILFR6A. Is there a consensus?

Jun 2, 2009 | 03:43 PM

#30

prodigymb

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Joined: Jul 2008

Posts: 2,172

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From: Philly

997TT, C192 GT63, W464 G550, MS Plaid

Quote:

Originally Posted by WL55

Grafh, your link shows IFR5D10 and Prodigy shows ILFR6A. Is there a consensus?

NGK ILFR6A is the longer / correct part #. same as sold at MB dealers.

I also just talked to a friend of mine who is a tech that works on my car and he told me he often sees Bosch plugs being used as well. I do not know the part number for the long Bosch plugs though....

Quote:

Originally Posted by GRAFH

no they are not all labeled with a mercedes logo. only the ones sold at mercedes dealership in mercedes boxes are labeled with the logo. ones sold at advance auto parts do not come labeled witha mercedes logo

Last edited by prodigymb; Jun 2, 2009 at 03:46 PM.

Jun 2, 2009 | 04:19 PM

#31

GRAFH

Senior Member

Joined: Aug 2008

Posts: 360

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From: Riverwoods, Il

2005 E55 AMG

Here are the part #'s broken down.

I = Iridium/ platinum. Iridium center electrode w/ Platinum pad ground electrode.
L= Short type.
F= 14mm o.d., 19mm/ 3/4" reach.
R= Resistor type.
6 = Heat range. 2= Hot 12= Cold.
A = Special Design/ Firing End Construction

-------------------------------------

I = Iridium/ platinum. Iridium center electrode w/ Platinum pad ground electrode.
F= 14mm o.d., 19mm/ 3/4" reach.
R = Resistor type.
5 = Heat range. 2= Hot 12= Cold.
D = Special Design/ Firing End Construction
10 = Gap of 1mm, .040"

As you can see the lfr's are the short ones & 1 heat range colder.

Last edited by GRAFH; Jun 2, 2009 at 05:46 PM.