[farbmw]

Hello all,


I hope someone can help me on this one.

I have a chance to buy a used rear differential for a good price from a 2007 335ix, but when they gave me the VIN number to verify that this is from a 335 and to find out the production date, the VIN was wrong, but they are sure it is from a 335.

Yes I know you can get the VIN from other parts of the car but it has been chopped up and sold so the diff is the only part that remained.

So he went and got the part number off of the diff and this is what is on it:

7566151-01
E2034V346

I looked at the realoem website and they have:

7566152

Which is one digit off, I want to make sure that the diff they have is for a 335i.

I called a BMW dealership for help, and they looked it up, they told me it is a part number but it does not say what it is for, no information on it.

So I am hoping that someone can help me out with this, I don't want to buy it and then find out it is not for a 335i when they install the diff.

Thanks in advance!!

[Ensi]

You have a manual or auto? Cause the 3.46 ratio is for an auto.
My part number on mine was 7561278-04/EA436U 3.46, so you look like you have enough digits there

[farbmw]

Originally Posted by Ensi

You have a manual or auto? Cause the 3.46 ratio is for an auto.
My part number on mine was 7561278-04/EA436U 3.46, so you look like you have enough digits there

It's at a wrecking yard and off of a 2007 335ix auto.

Yes I know the ratio is 3.46 on the autos but I want to make sure that the diff is off of a 335, because I don't want one off a 330ix

So are you saying that this E2034V346 P/N, the last 3 digits 346 tells you the gear ratio?

[scottp999]

I don't know if this will help at all because my car is not xi and is a manual trans, but I kept my original diff after upgrading a complete unit and just snapped this picture in my garage of the part number. My car was produced on April 17th, 2007 (not sure when that part was produced).

Also, I think Harold at HPAutowerks is an expert with diff's on our cars. You could PM him and see if there is any knowledge he is willing to share.

[farbmw]

Originally Posted by scottp999

I don't know if this will help at all because my car is not xi and is a manual trans, but I kept my original diff after upgrading a complete unit and just snapped this picture in my garage of the part number. My car was produced on April 17th, 2007 (not sure when that part was produced).

Also, I think Harold at HPAutowerks is an expert with diff's on our cars. You could PM him and see if there is any knowledge he is willing to share.

This is good, because I am starting to see a pattern, after the alpha/numeric # it gives the gear ratio, so if the wrecking yards last 3 digits states 346, and Ensi's has the same last 3, then yours is 3.08 then the wrecker's diff is one of two possibilities it is from a 335i auto or an M3 because of the 3.46 ratio.

If more members with a AUTO or MT and post there numbers then I would know for sure!

Thanks for the numbers guys it is helping me a lot!!

[Ensi]

Autos have 3.46 gear ratio, manuals are 3.08, 330i's have a diff ratio. Im just not positive if an xi has the same exact diff case as the 335i's. Shoot evolution racewerks a call, they are good on these.

[farbmw]

Originally Posted by Ensi

Autos have 3.46 gear ratio, manuals are 3.08, 330i's have a diff ratio. Im just not positive if an xi has the same exact diff case as the 335i's. Shoot evolution racewerks a call, they are good on these.

The ratio's I know are different, what I needed to know, with the numbers the wrecking yard gave me is it the diff of a 335i auto (3.46).

The rear diff of the 335ix and 335i are the same, realoem has the same part numbers for both models.

Thanks for the advice I may give them a call.

[dlbrooks18]

Email Harold at HP Autowerks in Santa Barbara or PM him, he will know..

[farbmw]

Originally Posted by dlbrooks18

Email Harold at HP Autowerks in Santa Barbara or PM him, he will know..

I just PM him to see if he could put some light on it.

Thanks

[HP Autosport]

Originally Posted by farbmw

I just PM him to see if he could put some light on it.

Thanks

What you have here is an early production automatic 3.46 ratio final drive unit. That is a good find as it is very rare. It will fit your 2008 335i with a manual transmission if that is what you have.

[farbmw]

Originally Posted by HP Autowerks

What you have here is an early production automatic 3.46 ratio final drive unit. That is a good find as it is very rare. It will fit your 2008 335i with a manual transmission if that is what you have.

Yes that is the plan!

Man your good! How did you figure out what it was?

Are you able to tell if it is bolted or welded?

And thanks again for you help!

[HP Autosport]

Originally Posted by farbmw

Yes that is the plan!

Man your good! How did you figure out what it was?

Are you able to tell if it is bolted or welded?

And thanks again for you help!

We have been doing LSD's on the E9x chassis since 2007, then pick up the E8x chassis soon after that. Not to mention E36/46 chassis as well. No less than 160 units of Quaife and 30+ units of Wavetrac have gone out of our doors so we know what it is when we see one.

To answer your question, it is bolted.

[farbmw]

Originally Posted by HP Autowerks

We have been doing LSD's on the E9x chassis since 2007, then pick up the E8x chassis soon after that. Not to mention E36/46 chassis as well. No less than 160 units of Quaife and 30+ units of Wavetrac have gone out of our doors so we know what it is when we see one.

To answer your question, it is bolted.

Damn!! I wish I could have that magic touch like that, I own BMWs since 1990s and there is somethings I can just tell by looking but nothing like what you can do, your the man!!

And thanks!!

[scottp999]

That's good news. Enjoy the diff and since it's bolted, get an LSD to bolt in from Harold.

[farbmw]

So I bought it and got a really sweet deal, it only has 6300kms on it to boot, so it is almost new!

These wrecking yards make me laugh, because when they do not know how to take something of they cut it!!

As you can tell by the pic.

If they did not cut the drive-shift off like that they would have made money off of it down the road.

Unfortunately I have to wait until mid February because the wavetrac is on back order.

[Ensi]

Nice work, your gonna love it....

[farbmw]

Originally Posted by Ensi

Nice work, your gonna love it....

That's what I am saying, but there are some that think I should not do it.

But that is there two cents.

[farbmw]

Originally Posted by maxnix

Where's the two cents?

The other forum members. And don't ask me which one's, I do not want to start anything.