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wasupdu

02-01-2010 05:36 AM

I have a 2005 525i and I've been looking for spark plugs online. Do I have a N52 engine or M54? I've been on seemingly dozens of auto sites looking for spark plugs and it seems to be a 50/50 split where some sites are saying that I have a M54 engine, whereas others say I have a N52.

I'm debating between OEM Bosch and NGK Iridium plugs.

Can someone please clarify exactly what engine model I have?

thx

poot1873

02-01-2010 05:44 AM

If it was built Jan 05 or before its M54, feb 05 could be either M54 or N52, from March 05 onwards it will be N52. I got this info from realoem.com.

porsche911targa

02-01-2010 05:58 AM

Quote:

Originally Posted by poot1873 (Post 1101886)

If it was built Jan 05 or before its M54, feb 05 could be either M54 or N52, from March 05 onwards it will be N52. I got this info from realoem.com.

Also of note, mine has a build date of May 2005 and it was sold as an 06.

monsterj34

02-01-2010 03:40 PM

if bmw sold it as 05 in US then it is m54.. if it is 06 then n52.. look at registration of your vehicle..

D33ZNUT5

02-05-2010 05:34 PM

Quote:

Originally Posted by porsche911targa (Post 1101890)

Also of note, mine has a build date of May 2005 and it was sold as an 06.

Mine too

wasupdu

02-06-2010 01:25 PM

thanks, guys! m54 it is!

Ricracing

02-07-2010 09:49 AM

Quote:

Originally Posted by wasupdu (Post 1105911)

thanks, guys! m54 it is!

To be sure, see this link.

pinguhk

02-07-2010 05:36 PM

1 Attachment(s)

Quote:

Originally Posted by wasupdu (Post 1101883)

if you engine looks like this
then you have the N52 like my

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