Spark Plug Replacement - M271
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
It certainly matters - you can't shroud the flame front - I will post correct length tomorrow by measuring the darn things - OE Bosch
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From: San Jose, CA
2010 c300
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From: San Pedro CA and Costa Mesa CA
2005 W203 SS
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Joined: Jun 2009
Posts: 7
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From: Houston
2004 C230K Sport
Just replaced mine w/ Bosch bought from AutohausAZ. If you go to the Bosch Auto website it has a part finder for your specific model. I went with the FR-6-MPPR332's. Had lots of oil in cyclinder 1. Just got an oil change and seems like they overfilled (won't ever go to that place again). Cylinder 2 had a bit probably from same cause. Also changed the fuel filter. Did all this 'cause the wife got a CEL while driving to work. Stealership wanted about half my years salary to do all of the above along with downstream oxygen sensor. Started doing research on this forum and $200 later, she PURRED!
The C230 purred too.
The C230 purred too.
MBWorld Fanatic!
Joined: Aug 2007
Posts: 1,545
Likes: 87
From: San Jose, CA
2010 c300
Just replaced mine w/ Bosch bought from AutohausAZ. If you go to the Bosch Auto website it has a part finder for your specific model. I went with the FR-6-MPPR332's. Had lots of oil in cyclinder 1. Just got an oil change and seems like they overfilled (won't ever go to that place again). Cylinder 2 had a bit probably from same cause. Also changed the fuel filter. Did all this 'cause the wife got a CEL while driving to work. Stealership wanted about half my years salary to do all of the above along with downstream oxygen sensor. Started doing research on this forum and $200 later, she PURRED! The C230 purred too.
The C230 purred too.MB World Stories
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Super Moderator
Joined: Jun 2008
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Senior Member
Joined: Mar 2008
Posts: 358
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From: San Pedro CA and Costa Mesa CA
2005 W203 SS
Junior Member
Joined: Aug 2009
Posts: 45
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From: So. California
2007 E350 (PZEV) Sedan
I ask because I don't know. I want to get Platinum Ir Fusion, how will it "trash my engine"?
FYI - I have a 2005 C230k (4 door)
Thanks!
Senior Member
Joined: Jan 2006
Posts: 491
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From: Redding, California
AMG GTS
So I've been searching around how to do a spark plug replacement on my '03 C230 Kompressor (M271) and I've seen people use a special spark plug removal tool for our motors, along with the M112, and other motors. Then I read through this thread seeing some people just used a inverted torx with a really long ratchet extension. I just wanted to clear things up...is it recommended to buy this "special spark plug removal" part from MB or can I just use that Torx E8 bit?
Walking through this all I'll need are:
1) x4 Bosch FR-6-MPP-332 spark plugs
2) Antiseize for the threads (isn't there something else that's also
recommended to be dabbed onto the spark plug?)
3) 7" Extension for ratchet to get deep into the head to get to the plugs
4) Whichever socket (from MB or Torx E8) to use
5) Elbow Grease
Am I missing anything? Sorry, I've never done a spark plug change before and I wanted to learn now and do this for myself. I'll take photos and try to make an attempt at a write-up for the M271 (since there are 2 write-up's sticky'd for the M112 only).
Thanks in advance guys!
Walking through this all I'll need are:
1) x4 Bosch FR-6-MPP-332 spark plugs
2) Antiseize for the threads (isn't there something else that's also
recommended to be dabbed onto the spark plug?)
3) 7" Extension for ratchet to get deep into the head to get to the plugs
4) Whichever socket (from MB or Torx E8) to use
5) Elbow Grease
Am I missing anything? Sorry, I've never done a spark plug change before and I wanted to learn now and do this for myself. I'll take photos and try to make an attempt at a write-up for the M271 (since there are 2 write-up's sticky'd for the M112 only).
Thanks in advance guys!
Super Member
Joined: Mar 2012
Posts: 968
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From: San Francisco, CA
2005 c230SS
So a question on the torque specs and use of anti-sieze ...
Toyota states 19 ft-lbs if you don't use anti-seize, and 11 ft-lbs if you do use anti-seize -- the concern being that anti-seize can allow you to overtighten the plugs. Do we have a similar issue with our engines, or is 18 ft-lbs good with or without anti-seize?
Thanks. John
Toyota states 19 ft-lbs if you don't use anti-seize, and 11 ft-lbs if you do use anti-seize -- the concern being that anti-seize can allow you to overtighten the plugs. Do we have a similar issue with our engines, or is 18 ft-lbs good with or without anti-seize?
Thanks. John
Junior Member
Joined: Sep 2010
Posts: 64
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From: San Francisco, CA
'03 C240 and '05 C230
Do you recall which plugs you ended up with? I purchased an '05 c230 and will be changing all fluids and spark plugs since it doesn't have too many service records. Seems that the NGK might be a better option since it's iridium versus platinum. I'm seeing online that the NGK ILFR6A is the correct plug for the m271 engine?
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Joined: Feb 2026
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From: Kentucky
2004 C230K 2 door coupe 1.8l m271 6 speed manual
