BMW 325is M50TU oil pan off, oil pump nut welding reinforcement

Across M and S 50 and 52's, and even S54's, the oil pump nuts have had a history of falling off, causing sudden oil pressure loss without warning, caused by being slightly under torqued out of the factory. Oil pump nut failures are most common on the S motors in the M3's. However M50 and 52's have also had a small history of oil pump nut failures.

Our fix, tack weld it! And that thing ain't coming off, take that as good or bad. My oil pump never failed, however I wanted this done for the sense of security, plus it was a good time to also do front sub frame reinforcements as well.

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Tags:

• bmw
• e36
• 325is
• m50
• s50
• m52
• s52
• m50tu
• m50b25
• s50b30US
• s50b32US
• m3
• 328
• 323
• 325