300E W124 M103 Spark Plug?

[d2bernhard]

First of all I am sorry to start a new thread on this subject, but I have waded through a swamp of information and cannot find a clear answer.

So then, since Bosch has discontinued the H9DC and the H9DC0 non resistor plugs — what is the correct plug for the 300E W124 M103? If it matters more I have an 86 300E and 92 300TE.

Thanks!

[petaling]

I was able to obtain the H9DC0 plugs from ebay.co.uk

[deanyel]

Click on "buy parts" at the top of the screen.

[d2bernhard]

Mercedesshop only carries the resistor plugs

[anthonyb]

The NGK BP5EFS appears to be an equivalent plug. Also, there is a Beru plug, I think the part number is 14 K-9 DU (Z81).

The NGK plug you'll have to look for it on eBay, possibly in the UK. The Beru plug can be ordered from kingsborne.com.

[manny]

Originally Posted by d2bernhard

Mercedesshop only carries the resistor plugs

What does the little " Note" H9 DC mean?
http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=1XC0ZKQX921W13TR0D&year=1986&make=MB&model=300-E-002&category=F&part=Spark+Plug

[d2bernhard]

not clear but many members have stated the get the R plug, and Bosch website says the same. I have read many posts on this subject.

[manny]

Have you talked to Phil lately?
Maybe he found a source for non-resistor plugs.

[petaling]

closing soon on ebay 20 h9dc0 non-resistor plugs for $10 excluding postage.
http://cgi.ebay.com/20-x-BOSCH-SUPER-H9DC0-SPARK-PLUGS-JOB-LOT-2-x-10-BOXES_W0QQitemZ170096427195QQcategoryZ40019QQrdZ1QQssPageNameZWD2VQQcmdZViewItem

[cmcdonnell]

Check the new forum Fastlane Specials. Here are the plugs:

http://catalog.peachparts.com/item.wws?mfr=TYS%3AOES&qty=1&sku=0031590403&cookieID=21212820H21215NSLW&source=www.peachparts.com&clientid=catalog.mercedesshop

[deanyel]

The original premise of the question was wrong - both plugs are still widely available.

[Texholdem]

Hi,

can the resistor type HR9DC be safely used without the risk of damaging the engine?

Thanks!

[manny]

They won't damage your engine, but you may experience some idling/driveability issues.