Stupid question, 4 bolt driveshaft on a 6 bolt Flange???

[Carrerax]

Hi guys,
I got a stupid question. My carrier bearing finally went totally bad on my 97 M3 5 speed stick. I bought a 99 M3 driveshaft but it is a 4 bolt. My 97 has a 6 bolt. I thought I heard that a 4 bolt driveshaft will bolt up to a 6 bolt flange? Can someone confirm this before I take it all apart? Thanks! Please email me!!! Thanks!

[John H]

I don't think so.... I think you're going to need another driveshaft, or another output flange on the diff.

- John

[Carrerax]

Hi John,
Your probably right. This sucks! I had a 99 one fedexed overnight to me and it is a 4 bolt. Oh well~

[JamesM3M5]

You can replace the center bearing, no problem. Part number 25 12 2 227 278.

[Carrerax]

Hi James,
Is that the number for the 97 driveshaft? I think the carrier bearings are different. How hard are they to replace?

[JamesM3M5]

I used a 97 M3 coupe 5-speed for the search. Give me the last 7 of your VIN and the catalog will definitely give you the correct part. The ETK did not specify there was a changeover in the center bearing part numbers through the years.

[Carrerax]

EE05401 It is a Sedan if that matters. How hard is the carrier bearing to replace?

[JamesM3M5]

Same part number.

You have to remove the driveshaft, mark the orientation (to preservce proper balance), slide the front and rear halves apart, then use a puller to remove the old bearing. Slide the new bearing while only tapping or pressing on the inner race only. I do not see a snap ring in there, so it's merely a light press fit.

You can also look in the yelow pages for a place that rebuilds and balances driveshafts. They'll be able to do it in no time if you don't feel up to the task. Save $$ by removing it and bringing it to them.

[Carrerax]

Thanks! Have a nice evening!