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Re: ATTN: 93-95 540i owners re: engine block probl (archive)

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Posted by kbia on July 31, 2001 at 11:57:13:

In Reply to: ATTN: 93-95 540i owners re: engine block problem posted by Ben 93 325is on July 31, 2001 at 10:48:27:

That part is fairly easy. But it requires getting under the right front of the car. All M60 and M62 blocks have casting numbers on the right side, directly alongside the 3rd cylinder, slightly above the coolant drain bolt. You will need a long screwdriver to move a small wire bundle out of the way.

These are the casting numbers to look for :

Nikasil M60B30 1 725 970 or 1 741 212 old

Nikasil M60B40 1 725 963 or 1 742 998 old

Alusil M60B30 1 745 871

Alusil M60B40 1 745 872

Alusil M62B44 1 745 873 NOTE, all M62 engines are Alusil.
This is the only way to determine which M60 you have, short of removing a cylinder head.

You are looking at least $7k to replace the block maybe more. BMW never did release figures on the % of blocks that where replaced. See the link below and it will give you alot of info on the problem.

We have a 93 740il it has 141k miles and the original block. It runs great with no problems. That being said I would not buy a 540/740 unless the block has been changed. Its too much of a risk. We also have a 94 540ia I bought it last year in Oct. It had 99k miles on it. I checked the blcok #s and found that the block had been replaced. I don't think the used car dealer knew anything about the problem. I paid $13,500 for the car. It was very clean. I found out later that the new block was installed at 85k miles.

Good Luck!
Take your time and you will find a nice car w/ the new block.


Hello, I am looking at a 95 540i for my wife. I have read however, about the engine blocks failing due to reaction with the sulphur in our gasoline. The BMWNA warranty runs out after 6 years...which is now. Has anyone had to replace their block? Is there a way to tell if the block needs replacing before I buy the car? If it does need replacing, what kind of costs would be involved?

I have been asking a lot of questions about the 540's over the last two days, I just want to thank all of you for your help!





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