Driveshaft broke while driving

yonversace · 12-10-2023, 12:41 AM

Hey everyone, my driveshaft broke and trashed my entire rear diff. I have a 6MT. If I buy an auto rear diff from the exact same model and year will it bolt right on?

Tambohamilton · 12-10-2023, 03:32 AM

It'll bolt on, but the ratio is different. Some would say it's better, but it depends what you're looking for.

yonversace · 12-10-2023, 03:26 PM

Thanks, I don’t mind the shorter gears as my 1st gear synchros are shot haaha plus I don’t like how there’s no real torque with the manual diff

Tambohamilton · 12-10-2023, 05:04 PM

I'm having doubts now... I'm pretty sure the output flanges are the same. I know the casing will bolt in... But is the input the same?

e90yyc · 12-12-2023, 12:06 AM

Quote:

Originally Posted by Tambohamilton

I'm having doubts now... I'm pretty sure the output flanges are the same. I know the casing will bolt in... But is the input the same?

I believe so… though like you, I’m not 100% certain.

What I do know is that xDrive diffs, regardless of whether 6MT or auto, will bolt up. Not sure if RWD cars have a different input compared to xDrive. If they do, I’d imagine RWD/auto and RWD/6MT would be the same?

yonversace · 12-14-2023, 10:31 PM

So does anyone know for sure if it’ll bolt on? I was trying to get the car ready before Christmas hits

Tambohamilton · 12-15-2023, 02:22 AM

Maybe check on realoem.com. Compare things like the bolts etc (all the parts that bolt to the diff) from your car with an auto. Flange dia may also be listed.

12-10-2023, 12:41 AM	#1
yonversace Private First Class 32 Rep 169 Posts Drives: 2007 328i sedan (dior) Join Date: Feb 2021 Location: mississippi iTrader: (0)	Driveshaft broke while driving Hey everyone, my driveshaft broke and trashed my entire rear diff. I have a 6MT. If I buy an auto rear diff from the exact same model and year will it bolt right on?
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12-10-2023, 03:32 AM	#2
Tambohamilton Brigadier General 3058 Rep 3,909 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	It'll bolt on, but the ratio is different. Some would say it's better, but it depends what you're looking for.
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12-10-2023, 03:26 PM	#3
yonversace Private First Class 32 Rep 169 Posts Drives: 2007 328i sedan (dior) Join Date: Feb 2021 Location: mississippi iTrader: (0)	Thanks, I don’t mind the shorter gears as my 1st gear synchros are shot haaha plus I don’t like how there’s no real torque with the manual diff
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12-10-2023, 05:04 PM	#4
Tambohamilton Brigadier General 3058 Rep 3,909 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	I'm having doubts now... I'm pretty sure the output flanges are the same. I know the casing will bolt in... But is the input the same?
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12-14-2023, 10:31 PM	#6
yonversace Private First Class 32 Rep 169 Posts Drives: 2007 328i sedan (dior) Join Date: Feb 2021 Location: mississippi iTrader: (0)	So does anyone know for sure if it’ll bolt on? I was trying to get the car ready before Christmas hits
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12-15-2023, 02:22 AM	#7
Tambohamilton Brigadier General 3058 Rep 3,909 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	Maybe check on realoem.com. Compare things like the bolts etc (all the parts that bolt to the diff) from your car with an auto. Flange dia may also be listed.
	Appreciate 0 Quote