[valerio1]

Originally Posted by regular guy

We all thought the same thing and many arguments have been fought over this topic. But a few weeks ago, I got to the bottom of it. Realoem removed the old part number from their database, and this is why we all thought the rod bearing part number had not changed.

Here's what I posted in another thread:

Got a lot more information. There have apparently been three different S65 crankshafts, and two sets of connecting rods. Maybe somebody with better BMW connections (hint, hint, Tom@EAS) can fill in the blanks. You will be surprised, I even found +.001 bearings and they are currently available!

BTW, this wasn't easy to track down. Had to look in catalogs out of country, etc. Called local dealer and confirmed they are all valid part numbers, and +size bearings are still available using these part numbers.

Crankshafts:
11 21 7 838 641 Crankshaft, Ended (no date given), no weight given
11 21 7 841 658 Crankshaft, Ended (October 2008), 20.400 kg
11 21 0 443 639 Crankshaft, Current production, 23.840 kg

Main Bearings:
11 21 7 841 488 Main Bearing Top, Yellow, Ended (October 2008)
11 21 7 841 609 Main Bearing Top, Yellow, Replaced 488 bearing
11 21 7 841 489 Main Bearing Top, Green, Ended (October 2008)
11 21 7 841 610 Main Bearing Top, Green, Replaced 489 bearing
11 21 7 841 490 Main Bearing Top, Violet, Ended (October 2008)
11 21 7 841 611 Main Bearing Top, Violet, Replaced 490 bearing
11 21 7 841 483 Main Bearing Bottom, Yellow, Ended (October 2008)
11 21 7 841 605 Main Bearing Bottom, Yellow, Replaced 483 bearing
11 21 7 841 484 Main Bearing Bottom, Green, Ended (October 2008)
11 21 7 841 606 Main Bearing Bottom, Green, Replaced 484 bearing
11 21 7 841 485 Main Bearing Bottom, Violet, Ended (October 2008)
11 21 7 841 607 Main Bearing Bottom, Violet, Replaced 485 bearing

Rod Bearings:
11 24 7 838 089 Rod Bearing Blue, 53.000 mm, +0.000 mm, Ended (no date given, but hints at July '08)
11 24 7 841 703 Rod Bearing Blue, 53.000 mm, +0.000 mm, Replacement for 089 bearing.
11 24 7 838 091 Rod Bearing Blue, 52.750 mm, +0.250 mm, Currently available

11 24 7 838 088 Rod Bearing Red, 53.000 mm, +0.000 mm, Ended (no date given, but hints at July '08)
11 24 7 841 702 Rod Bearing Red, 53.000 mm, +0.000 mm, Replacement for 088 bearing.
11 24 7 838 090 Rod Bearing Red, 52.750 mm, +0.250 mm, Currently available

I have verbal confirmation that some bearings replaced at another SoCal shop have 088/089 stamped on the back. So this would be pretty strong evidence along with information posted by Tom & B767capt that the rod bearings have indeed been superseded since production began. Most likely they were superseded in October 2008 when the crankshaft and main bearings were superseded. I will take pictures when I see these bearings in person.

Since I posted this, I ordered and received samples of each of these rod bearings including the oversized bearings. Yesterday, I measured and photographed all of the rod bearings.

Rod Bearings:
11 24 7 838 089 Blue, 53.000 mm, +0.000 mm, 0.07890" Thick, Ended
11 24 7 841 703 Blue, 53.000 mm, +0.000 mm, 0.07890" Thick, Replacement for 089 bearing
11 24 7 838 091 Blue, 52.750 mm, +0.250 mm, 0.08370" Thick, Currently available

11 24 7 838 088 Red, 53.000 mm, +0.000 mm, 0.07875" Thick, Ended
11 24 7 841 702 Red, 53.000 mm, +0.000 mm, 0.07875" Thick, Replacement for 088 bearing
11 24 7 838 090 Red, 52.750 mm, +0.250 mm, 0.08370" Thick, Currently available

Here's a photo of the old and new bearings side-by-side with part numbers shown. As seen in the photo, the bearing surfaces are quite different.

Attachment 913003

Hi regular guy,

I am looking for the oversized bearings 11 24 7 838 090 and 11 24 7 838 091. Can you please advise where I can order them from? I live in Europe and I was informed they cannot be found here. I am in need, man, your help will be appreciated! Thanks