Needs plugs and wires, NGK LFR7AIX?
MBWorld Fanatic!
Joined: Jun 2013
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From: 'Merica
'04 E55 (Gone but not forgotten), '13 C63 P31 (RIP), another '13 C63 PP
Damn, I just replaced my wires and had no idea about these! If I order a set will they all be the right length, as I remember from replacing my wires some are longer than others to reach the plugs at the front of the block.
Thread Starter
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Joined: Mar 2008
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From: Chicago
15 S63, 18 Ram 2500 Cummins
yes, Amazon says they don't fit because they're colder than OEM, but dozens of us prove that they do work 
yep, I ran my 7s for a few months before modding - no issues - they're great plugs
check my link in the parts list:
Magnecor 85240 8.5mm KV85 CN Series Ignition Cable 1997-2011 $172
note: this is the 8.5mm part, need to find the 10mm part (if you're interested)
Magnecor's KV85 Competition (8.5mm) and R-100 Racing (10mm) Ignition Cables feature Magnecor's exclusive 2.5mm high capacity Metallic Inductance EMI Suppressed conductor consisting of stainless steel wire precisely wound at 200 turns per inch over a ferrimagnetic core. The insulating jacket is made entirely of Magnecor's exclusive TC-1500-HS high strength aerospace grade silicone rubber, and its single layer construction will prolong the jacket's insulating ability by conducting extreme heat away from hot-spots that occur near over-the-limit heat sources.
The KV85 8.5mm jacket has a service heat resistance of 600 degrees F (320 degrees C) and up to 1,000 degrees F (540 degrees C) for short burst 3 minutes. The R-100 10mm jacket has a service heat resistance of 700 degrees F (380 degrees C) and up to 1,200 degrees F (650 degrees C) for short burst 3 minutes. Even if limits are exceeded, the silicone rubber will retain its insulating ability until wires are removed from engine.
it seems the 10mm is just more insulation, not more core
yep, I ran my 7s for a few months before modding - no issues - they're great plugs
check my link in the parts list:
Magnecor 85240 8.5mm KV85 CN Series Ignition Cable 1997-2011 $172
note: this is the 8.5mm part, need to find the 10mm part (if you're interested)
Magnecor's KV85 Competition (8.5mm) and R-100 Racing (10mm) Ignition Cables feature Magnecor's exclusive 2.5mm high capacity Metallic Inductance EMI Suppressed conductor consisting of stainless steel wire precisely wound at 200 turns per inch over a ferrimagnetic core. The insulating jacket is made entirely of Magnecor's exclusive TC-1500-HS high strength aerospace grade silicone rubber, and its single layer construction will prolong the jacket's insulating ability by conducting extreme heat away from hot-spots that occur near over-the-limit heat sources.
The KV85 8.5mm jacket has a service heat resistance of 600 degrees F (320 degrees C) and up to 1,000 degrees F (540 degrees C) for short burst 3 minutes. The R-100 10mm jacket has a service heat resistance of 700 degrees F (380 degrees C) and up to 1,200 degrees F (650 degrees C) for short burst 3 minutes. Even if limits are exceeded, the silicone rubber will retain its insulating ability until wires are removed from engine.
it seems the 10mm is just more insulation, not more core
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From: Folsom, CA
2005 E55 AMG
checking their catalog, it seems only 8.5mm available for the M113 engine
http://www.magnecor.com/magnecor1/files/catalog.pdf
KV85
Year Application 8mm 7mm 8.5mm
2011-1997 4.3, 5.0, 5.4 (M113) V8 80240 87240 85240
http://www.magnecor.com/magnecor1/files/catalog.pdf
KV85
Year Application 8mm 7mm 8.5mm
2011-1997 4.3, 5.0, 5.4 (M113) V8 80240 87240 85240
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From: Keller
clk63, cls55, ml63, (w210) E55
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From: Keller
clk63, cls55, ml63, (w210) E55
checking their catalog, it seems only 8.5mm available for the M113 engine
http://www.magnecor.com/magnecor1/files/catalog.pdf
KV85
Year Application 8mm 7mm 8.5mm
2011-1997 4.3, 5.0, 5.4 (M113) V8 80240 87240 85240
http://www.magnecor.com/magnecor1/files/catalog.pdf
KV85
Year Application 8mm 7mm 8.5mm
2011-1997 4.3, 5.0, 5.4 (M113) V8 80240 87240 85240
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From: Clearwater Beach, Florida
2016 Cls63s AMG
okay thats cool, so all the same length?? i thought some of ours were shorter than others etc no??
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From: Keller
clk63, cls55, ml63, (w210) E55
Thread Starter
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Joined: Mar 2008
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From: Chicago
15 S63, 18 Ram 2500 Cummins
Got the LFR7AIX plugs and the magnacore wires and my dealer said the wires are too short. What's the issue? I got the correct part number, anyone else have this issue?
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From: Keller
clk63, cls55, ml63, (w210) E55
Send them back, they will refund the money or get you longer ones. They are cool to deal with.
Last edited by EREBUS; Jul 30, 2014 at 10:31 PM.
Thread Starter
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Joined: Mar 2008
Posts: 546
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From: Chicago
15 S63, 18 Ram 2500 Cummins
How do they send me longer ones? Same part number or a different application? What plugs did you use? Since the ngk plugs are longer, does that mean the wires will fit better
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From: Keller
clk63, cls55, ml63, (w210) E55
You tell Magnecor to make their application size for the m113/m113k engine one inch longer on all the wires. I'm using NGK plugs.
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From: Orange County, CA.
one car at a time
Well if done properly modding can make a car better (more enjoyable, faster, etc.)...Replacing a part with an inferior part or replacing a part that is perfectly fine with an equally fine part, due to ignorance, is well, foolish....
When replacing spark plug wires, one should be testing resistance to determine whether they need replacement....
When replacing spark plug wires, one should be testing resistance to determine whether they need replacement....
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From: Keller
clk63, cls55, ml63, (w210) E55
magnecor is on more racing applications than bosch. do you even want to compare the difference between high performance race spec and oem bosch? talk sh*t somewhere else
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From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
racing wires got a different spec. than stock, differ material+thickness+heat resistance,,
long time of using them & still brilliant is good sign of evidence..
what kind of comparison we can dig about..
ZAYED,,
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From: Orange County, CA.
one car at a time
.
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Joined: Dec 2012
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From: Washington, DC Metro Area
Currently: 2019 E450 AWD, Previous: 2002 CLK55 Cab
Gents,
I found this thread doing a search for spark plug wires for my 2002 CLK 55. I like what I have read here and elsewhere about Magnecor wires. Regarding the choice between the 8.5 and 10mm options, what size are the stock wires on the M113 engine?
I found this thread doing a search for spark plug wires for my 2002 CLK 55. I like what I have read here and elsewhere about Magnecor wires. Regarding the choice between the 8.5 and 10mm options, what size are the stock wires on the M113 engine?
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From: Keller
clk63, cls55, ml63, (w210) E55
8.5mm and 10mm Magnecor wires have the same size core
Last edited by EREBUS; Aug 8, 2014 at 08:40 PM.
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From: Washington, DC Metro Area
Currently: 2019 E450 AWD, Previous: 2002 CLK55 Cab
Thanks, that is exactly what I needed. Again thanks for confirming that the core was the same size for both the 8.5 and the 10mm. The difference is that the 10mm has thicker insulation thus allowing it to withstand another 100 degrees of heat. I am going to assume that the wires on a stock M113 dont get near 600 degrees, ie that the 8.5 mm magnecor is superior in core size and insulation than stock.
