Das Geld 2

I did the search and there was no definite answer on the OEM Plugs other than Bosch Platinum. What's the exact part number? I did a search on AutohausAZ and found these:

http://www.autohausaz.com/search/pro...2@Spark%20Plug

Is it 7422?

ohlord

7422 is the most effective plug for your engine.
Avoid multi tip they lead to issues.
Use no anti seize

Corsa9000

Why no anti-seize?

xexpo

What kind of issues would come up if 4418 (Platinum +4) or 4501 (Ir Fusion +4) used?

ohlord

are plated with trivalent metal so no longer need anti seize like the old days.
Use of anti seize affects torque settings and also can lead to plugs shorting if used incorrectly.
M112 and M113 engines are known to experience misfire issues related to multi tip plugs. They offer no increase in performance too boot.








17mm special boot tool

Corsa9000

OK, thanks OhLord.

Das Geld 2

Thanks!

ohlord

to 20-30Nm 15-22ft lb torque.

Corsa9000 the 04 55 engine calls for a 2 range cooler plug
NGK ILFR6A http://www.amazon.com/NGK-ILFR6A-Las.../dp/B001MU112I for performance applications or the bosch 7422
still single electrode
about $80 more for 16 plugs the ngk

Plug oem standards are still one of the things that Mercedes lists in the tech section of owners manuals
They are getting stingy with tech info in the hopes that if they make part choices or fluid types tough to find info the average owner will just go to the dealer and pay for a thousand dollar spark plug change that they could have done in a few hours for 100-200 bucks and a few beers

xexpo

Good stuff, thanks ohlord.

indigo_kid

I have the basic question.
Should I put any anti-seize when i replace my spark plugs this weekend??

(i have a M272 engine)

Thanks!!

xexpo

Read ohlords's #5 post about the use of anti-sieze.

myscion04

I have a 2003 E320 and I am looking for plugs also and don't know which are best.

Welwynnick

Have you read the owner's manual?

You can download it from MB USA.

Nick

amstel78

Old habits die hard I guess. I used a little bit of anti seize when I changed the plugs on my M275.