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inevitab1e inevitab1e is offline
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Car: 2013 N55 135is
Default N55B30 Engine Code location? - 11-03-2018, 01:12 PM

Trying to find the engine code on my engine, anyone know where it's located on the 135i N55?

2013 E82 135is N55 JB4-BEF FBO
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Mikeywannagofast Mikeywannagofast is offline
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Join Date: Jun 2018
Car: 2015 M235i
Default 11-27-2018, 10:51 PM

I have an M235i and have an N55B30 as well... I made a YouTube video for you. https://www.youtube.com/watch?v=KbEtm5dwpWs

It's easy.
Just remove the engine cover and look between runners 2 and 3 of the plastic intake manifold. There will be a flattened portion of the cylinder head underneath the 3rd runner. That's where its stamped.

The numbers will be really hard to read so you may have to rub a small wire brush on that flat section to actually get the numbers to show up visibly. The metal gets a little, how to put this, oxidized? The same way the metal does around the oil filter housing... you know, has a little bits of white specks that rub off to reveal an unblemished metal.

In order to reach the area where the numbers are, I used a small wire brush... that I taped to a ruler... that I held with a pair of vice grips. It may be difficult to see so use a REALLY bright flashlight!

Hope that helps!!!

Last edited by Mikeywannagofast; 11-28-2018 at 01:10 AM..
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