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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Engine: n51 or n52? Help



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      06-07-2010, 12:14 PM   #1
e92mac
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Engine: n51 or n52? Help

Hey guys i have to 2010 328i e92 and i was wondering which engine i had N51 or N52?. I havent been able to find it, but i entered my vin in a webpage and it says type of engine: 3.0L I6 DI. whats is this?
My vin starts

wbawb3c55apXXXXXX

Can anyone help me?

Thanks
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      06-07-2010, 02:16 PM   #2
MOTO69JOE
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I know the 09 had either one. I think it just boils down to whatever they had laying around? As far as I know there is no real difference? Maybe one is California emissions approved?
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      06-07-2010, 03:46 PM   #3
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Found some info on the engine differences
http://www.e90post.com/forums/showpo...08&postcount=3
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      06-07-2010, 03:51 PM   #4
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http://www.realoem.com/bmw/select.do

go there, enter the last of your VIN in the Serial # search.
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      12-27-2010, 09:55 PM   #5
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my 07 had the n52, my 11 has the n51. only difference i've noticed is a slightly rougher idle on the n51, and lower highway fuel economy by about 2-3mpg on a long trip. if a true power difference exists, it isn't noticeable.
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      12-28-2010, 04:21 AM   #6
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Hmmm... 3.0 DI? Sounds like an N53, but the US didn't get these. The N52 is the ULEV and the N51 is SULEV (or is it PZEV?) You can tell by the presence of a 3-stage intake manifold. You'll see a box with a cable attached to it right next to the "BMW" on the manifold itself. Thats one of the DISA valves. If you have it, it's an N51. If it's the single stage manifold (ie no valve), its an N52.
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      12-28-2010, 04:59 AM   #7
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I've got an N52 WITH the disa valve - 2.5L capacity.

OP, best bet is to use the link craven provided.
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      02-07-2013, 04:44 PM   #8
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Thanks for realoem link, I have an N52N engine with A PPH prduction code?
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