Here is a DIY I put together for the N54 535 oil cover gasket leak. Sorry if this seems duplicated, but what I found in the forum search was quite muddied with other engines that were clearly not the same with an entirely different process. Actually more difficult. The N54 was very simple once you start on it. I did not list the part numbers because I could not confirm the actual correct part numbers throughout the 535 engines. Better one just go to the dealer and collect them along with the two o-rings for the inlet hoses.

 

Hi tonyb635:

I’m so lucky for finding "N54 Twin Turbo Oil Filter Housing Gasket – DIY" that you posted year ago. The attachment is so nice and so easy to follow. I’m going to replace it for my car. When I do it, do I have to remove the oil filter cap? Appreciate your help.

rzbmw535

 

Funny how I just found this DIY. Two days ago I took my 535i to get this gasket replaced, usually I do easy DIYs like this myself but since I was moving I didn't even had where to wash the car so, $400 at a local Indie seemed fair. (Leak was pretty bad, to the point that I noticed because of burned oil smell inside the cabin). Long story short, MAKE SURE YOUR LEAK DIDN'T GET INTO THE BELT! And just to be sure, I would replace the belt and clean everything anyway just to be safe. Next day after they replaced the gasket, my belt got destroyed and debris of the same went everywhere, INCLUDING inside the engine. Luckily it didn't do any damage to the valves etc., but still ended up paying $1900 more worth of repairs. I read online the same has happened to other people with less luck, and they have ended up either replacing the engine, or rebuilding it for a LOT of money. This is pretty scary stuff if you are out of warranty.

 

Thank you for this guide. I need to replace mine. Do you have a link to the part?

 

I'm about to do mine as well. Here is what I found:

11-42-7-537-293-M30

2008 BMW 535i Base Sedan - Oil Circulation - Page 1

 

Do you have parts number you used ? I assume Gasker part number is Oil Cooler Gasket 11427525335 but what is part number for Two O-Ring for Inlet ? Do you really had to remove both oil line ? is there anyway same job can be done without removing oil Line. ?

 

Hi,
I am having hard time opening 6 mm Hex screw between to oil hose. Can anyone give me idea on how can I easily remove it ? I did open front ECM Cover but seems my Hex Key is longer and only it can fit is at angle and not the straight. I am thinking of cutting it off and making it small so it does not touch to fan but if anyone else has better idea I do not have to go through cutting hex key since it is very hard metal. I spend almost hour and still not able to open 6 mm hex screw.

I have 2008 535xi Twin M54 engine.

 

I had to just use a 6mm hex and a pair of pliers to get enough torque to break it loose.. bought a short set from autozone.

 

Thanks..Finally I was able to break it loose after several hours of attempt and different hex keys. I had to use Long part of the hex key with ball on top of it. Some reason I could not fit regular 6 mm hex. Rounded Hex key went easily in but I did not have much leverage since it was on longer side. After some attempt I was able to break it loose. I ended up scratching my hand too.

When I was putting back, I used attached setup and it worked great. I wish I would have done this while opening 6 mm. hex screw.

Another thing I learned from this job is O-Ring on Oil line goes on top of Insert.Initially I put both O-Ring on head and insert would not go in ..and I ended up braking both O-Ring. So I had to use old O-ring and it worked great after I put it through Insert of Oil Line.