Spark plugs question - Page 2 - MBWorld.org Forums

Sep 17, 2015 | 03:43 PM

#26

Tonycpa

Member

Joined: Aug 2015

Posts: 220

Likes: 3

From: New York

2012 Mercedes Benz E550 4Matic Sport Sedan

I got these...

Weistec M157 / M278 spark plugs are designed and manufactured for not only high power applications but also factory replacement. The factory iridium plugs do not handle the M157’s high cylinder pressures very well due to the very small electrode tip and frequently result in misfire problems, even on unmodified vehicles.

Our silver core BOSCH spark plugs can support significant increases in power while operating perfectly under normal driving situations. The M157 / M278 spark plugs are also 1 step colder to help prevent pre-ignition in engines that are making more power than stock allowing you to further push the envelope of your vehicle.

KEY FEATURES:
Higher Output for High Boost Applications

Colder range for better performance with increased horsepower levels

Direct replacement / bolt in for M157 / M278 engines

Silver core spark plug provides significantly improved performance over iridium

Suitable for all M157 / M278 vehicles from stock to highly modified

Set of 8

Sep 17, 2015 | 06:32 PM

#27

mnje350

Super Member

Joined: Oct 2010

Posts: 764

Likes: 10

From: North Carolina

2010 E350, 2015 S550

Quote:

Originally Posted by Arrie

Bosch is a German company and makes lots of electronics for cars also other than German cars. But if MB uses NGK plugs over Bosch there must be a reason for it...if I was you I would get the correct NGK plugs for the car...

Over the years I have learned that NGK makes the best spark plugs for pretty much every possible application there is.

I am not a buyer for any of the automotives but with that being said. .. I am guessing that who ever meets the MB specifications for quality, reliabilty and application needs at the best price gets the business from MB. I can't imagine that a Bosch plug would be a bad choice.

Sep 17, 2015 | 06:43 PM

#28

beejAMG

MBWorld Fanatic!

Joined: Jul 2013

Posts: 3,133

Likes: 134

From: Down Unda

W204 C63 AMG, W212 E250 CGI, C207 E250 CGI

Quote:

Originally Posted by mnje350

MB has been using bosch for sometime till they changed to NGK. not sure why but your reason seems right on the money.

but imo, for a few dollars more id rather go for bosch. i believe theres no difference or not much, if theres any, if you stay with the correct specs between bosch and ngk, its probably just the brand name for me.

euro car, euro parts. although everything nowadays is made in china.

Last edited by beejAMG; Sep 17, 2015 at 06:46 PM.

Jun 20, 2019 | 09:15 PM

#29

mrbrianshin

Junior Member

Joined: Oct 2013

Posts: 64

Likes: 2

2010 E350 4Matic

Quote:

Originally Posted by aaacsdai

NGK (4288) PLKR7A Laser Platinum Spark Plug, original equipment-MY 11, E-550, Gap .032, this is a laser Platinum plug that has been around for many years, 10.77 each-Amazon.

Bosch YR7MPP33 Original Equipment Fine Wire Platinum Spark Plug, GAP .032, this is also a Laser Platinum plug, 10.07 each-Amazon.

Denso IXUH22 Iridium Power Spark Plug, Gap .032, 8.99 Advance Auto Parts.

Homeofstone may know what the Laser Iridium Spark Plug part number is-I could not find it.

Are the gaps the same for the E350 and the E550? I have an E350 4MATIC, and plan on changing my spark plugs this weekend. Do I still use the .032 gap with 23nm tightening torque? Please let me know if it should be any different! Thanks MBWorld forums!!

Jun 20, 2019 | 10:26 PM

#30

pb39374

Senior Member

Joined: Dec 2018

Posts: 284

Likes: 60

From: New York

2010 E350 4Matic sedan

According to the owners manual (at least for the 2010 models), the Gap is the same for both cars (.031 in)

Last edited by pb39374; Jun 21, 2019 at 06:39 AM.

Jun 20, 2019 | 10:34 PM

#31

mrbrianshin

Junior Member

Joined: Oct 2013

Posts: 64

Likes: 2

2010 E350 4Matic

Thank you pb39374! Much appreciated!!! =)

Jun 20, 2019 | 11:28 PM

#32

2011E350

Member

Joined: Jan 2019

Posts: 118

Likes: 32

2011 E350

I forgot which ones but I used Bosch Platinum on my 2011 E350 and no problems. Gap was set right out of the box and fairly straight forward R/R. highly recommend Magnetic screwdriver especially on the Coil pack retaining Torx I dropped three down the abyss of the side of the engine never to be seen again. Went to dealer I needed three but they had 13 in stock. I wiped them out to be on the safe side. Personally I think some of the modern day lifespans are over estimated and remember they are baking on you being way out of warranty before a major component fails. I personally would be replacing the plugs every 50K at most even if they were good. Simple Logic....Remove and prevent from seizing in the block. Too many horror stories about the Ford V8 and plugs stripping out or breaking off in the head.