BMW diff issue

[BMWmadhatter]

Hello i am having a bit of trouble atm in regards to the notorious diff whine and i am needing a replacement. i have a 2006 120d msport ratio 3.07 6 speed manual. the thing is im having trouble finding a suitable part to replace it online. Would a bmw differential from the newer bmws like the bmw 1 series and 3 series n47 bolt straight on to my car or are they not compatible?

[Krikkit]

Could you get your diff rebuilt? What's the cause of the whining?

[Haltamer]

Are you looking explicitly for a new one? If not I'd have a look around breakers; There's one down my road that seems to wheel in a new wrecked 120D every week.

[aeropilot]

Haltamer said:

There's one down my road that seems to wheel in a new wrecked 120D every week.

This.
Can't believe finding a 2nd hand pumpkin unit for a 120d is that hard..?

[Haltamer]

aeropilot said:

This.
Can't believe finding a 2nd hand pumpkin unit for a 120d is that hard..?

They're all bought up by the same 17YO's that are writing them all off

[naturalaspiration]

It's also used on e9x 318d and 325xi.

[BFleming]

BMWmadhatter said:

i have a 2006 120d msport ratio 3.07 6 speed manual. the thing is im having trouble finding a suitable part to replace it online.

The 1:3.07 diff was fitted to the automatic cars; the manuals should have a 1:2.56 differential. You're 100% sure yours is a 1:3.07?

[Touring442]

Diffs for these (120d and 320d E90) are practically worthless because they rarely fail, unlike the small case early 118d units.

Here's one for 60 quid:

https://www.ebay.co.uk/itm/BMW-E90-E91-E92-E93-320...

Another for £70:

https://www.ebay.co.uk/itm/BMW-1-3-SERIES-e87-e90-...

Just ensure the noise isn't a rear wheel bearing.