Spark Plug Replacement - M271
Senior Member
Joined: Sep 2008
Posts: 331
Likes: 9
From: Bangkok, Thailand
W124, W203, W204, W251
It's super-easy!
Pop the cover off....loose the bolts that hold the direct-coil.....unplug the coil....pull them out.....put spark-plug socket in there and turn it counter-clockwise....That's it
Pop the cover off....loose the bolts that hold the direct-coil.....unplug the coil....pull them out.....put spark-plug socket in there and turn it counter-clockwise....That's it
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Junior Member
Joined: Apr 2007
Posts: 30
Likes: 0
From: Westchester, NY
04 C230K SS 6Spd Manual
Senior Member
Joined: Sep 2008
Posts: 331
Likes: 9
From: Bangkok, Thailand
W124, W203, W204, W251
^^^I always get parts from rmeuropean.com.....OEM Bosch is only $9.86/each
M271 has a very unique plug, so make sure you get Bosch FR-6-MPP-332......DO NOT get something else(eg Platinum, Fusion, Bosch+4, E3, etc.) Otherwise, you'll trash the engine!
M271 has a very unique plug, so make sure you get Bosch FR-6-MPP-332......DO NOT get something else(eg Platinum, Fusion, Bosch+4, E3, etc.) Otherwise, you'll trash the engine!
Junior Member
Joined: Apr 2007
Posts: 30
Likes: 0
From: Westchester, NY
04 C230K SS 6Spd Manual
Thanks a lot.
Senior Member
Joined: Jul 2008
Posts: 267
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05 c230 kompressor
i need to change mine out too. so this is the one to get. 05 c230 komp. auto?
Super Moderator
Joined: Jun 2008
Posts: 19,942
Likes: 191
From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
Yep! & the plugs have a very unique length - don't mess with these things - Benz know what is right for their engines.
Senior Member
Joined: Sep 2008
Posts: 331
Likes: 9
From: Bangkok, Thailand
W124, W203, W204, W251
What's the change interval for our spark plugs? I read it was 60k miles. Planning to get the Bosch.
Guys what about my CLK W209 ?? am i gona use the same plugs or what??
Thanks,
Andy
Thanks,
Andy
If I remember it correctly, M112 has twin-spark.....so you need 12 plugs total.
Bosch FR-8-DPP-33 is the one you need.
just bought NGK Laser Iridium. other threads recommended this. is it ok? havent installed it yet. is it safe?
MBWorld Fanatic!
Joined: Oct 2004
Posts: 1,305
Likes: 37
From: Las Vegas, Nevada
2013 C350 Coupe, 2005 C230K Kleemann Sedan, 2013 GLK350 4matic
I just changed my spark plugs this afternoon with the Bosch OEM type. I have a little over 58000 miles on them.
The plugs I pulled still looked pretty descent; the #3 and #4 plugs were dry and had just black and the center was a normal tan color. The #1 and #2 plugs had some oil on it and when I looked way down into the spark plug hole, I could see that the piston tops had oil on it. When I pulled off the coils for the #1 and #2 there was a little oil in the coil tubes as well, so I may have a leaking valve cover gasket. Hopefully nothing worse.
I will pull the plugs again in about 5000 miles to see how they are running.
The plug remove and replace took a total of 45 minutes with a break.
The plugs I pulled still looked pretty descent; the #3 and #4 plugs were dry and had just black and the center was a normal tan color. The #1 and #2 plugs had some oil on it and when I looked way down into the spark plug hole, I could see that the piston tops had oil on it. When I pulled off the coils for the #1 and #2 there was a little oil in the coil tubes as well, so I may have a leaking valve cover gasket. Hopefully nothing worse.
I will pull the plugs again in about 5000 miles to see how they are running.
The plug remove and replace took a total of 45 minutes with a break.
Super Member
Joined: Feb 2008
Posts: 699
Likes: 44
From: PA
09 CLK550
The #1 and #2 plugs had some oil on it and when I looked way down into the spark plug hole, I could see that the piston tops had oil on it. When I pulled off the coils for the #1 and #2 there was a little oil in the coil tubes as well, so I may have a leaking valve cover gasket. Hopefully nothing worse.
