08 325d bolted diff replacement

DelaneyDK · 10-12-2021, 04:27 PM

Hi all

My 2,35 diff (manual car) needs replacing. Ideally I would like to find a bolted replacement so I can fit a LSD. I have a few questions:

1) the sticker says 7571188 and realoem says 7571189. What’s the difference between those two numbers?

2) is it possible to source a bolted diff with roughly the same ratio which fits on my axles? Which part number / time period should I look for?

Sethorion · 10-13-2021, 03:55 PM

I think you just need a pre-facelift diff from a car of the same spec, fuel type, and gearbox. RealOEM of 7zap will help you find the part number.

Good luck finding one on eBay. They're like unicorn horns.

Andystobbs · 10-13-2021, 04:57 PM

4 on ebay £500 each

Sethorion · 10-18-2021, 09:48 AM

I was thinking of 335i ones. iirc only 10% of them had the manual gearbox.

nomiS330d · 10-18-2021, 12:11 PM

2.35 ratio diffs are fitted to manuals. 2.81 is for autos. I’ve got both types and have had them both in my manual 330d. The 2.81 makes the car feel quite perky in the mid to higher gears but first is way too low really. My 56 plate has got the bolted diff which thankfully made it a bit cheaper when I had a quaife lsd fitted. Best mod ever, love it. 2.35 diffs do seem a lot harder to come by and do command a premium over the 2.81 auto diffs, as said, they’re about £500. I don’t know how you tell whether they’re bolted or welded without opening them up though.

10-12-2021, 04:27 PM	#1
DelaneyDK Registered 0 Rep 2 Posts Drives: '08 325d M57 Join Date: Sep 2021 Location: Denmark iTrader: (0)	08 325d bolted diff replacement Hi all My 2,35 diff (manual car) needs replacing. Ideally I would like to find a bolted replacement so I can fit a LSD. I have a few questions: 1) the sticker says 7571188 and realoem says 7571189. What’s the difference between those two numbers? 2) is it possible to source a bolted diff with roughly the same ratio which fits on my axles? Which part number / time period should I look for? Attached Images
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10-13-2021, 03:55 PM	#2
Sethorion Enlisted Member 9 Rep 45 Posts Drives: 2010 E92 335i MSport LCI 6MT Join Date: Sep 2021 Location: Cheltenham, UK iTrader: (0) Garage List 2010 BMW E92 335i LCI [0.00]	I think you just need a pre-facelift diff from a car of the same spec, fuel type, and gearbox. RealOEM of 7zap will help you find the part number. Good luck finding one on eBay. They're like unicorn horns.
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10-13-2021, 04:57 PM	#3
Andystobbs Captain 196 Rep 720 Posts Drives: E91 Lci, Vectra B V6 Join Date: Sep 2019 Location: Chester, South Wirral iTrader: (0)	4 on ebay £500 each
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10-18-2021, 09:48 AM	#4
Sethorion Enlisted Member 9 Rep 45 Posts Drives: 2010 E92 335i MSport LCI 6MT Join Date: Sep 2021 Location: Cheltenham, UK iTrader: (0) Garage List 2010 BMW E92 335i LCI [0.00]	I was thinking of 335i ones. iirc only 10% of them had the manual gearbox.
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10-18-2021, 12:11 PM	#5
nomiS330d Lieutenant 78 Rep 538 Posts Drives: E92 330d Join Date: Jul 2017 Location: Doncaster iTrader: (0)	2.35 ratio diffs are fitted to manuals. 2.81 is for autos. I’ve got both types and have had them both in my manual 330d. The 2.81 makes the car feel quite perky in the mid to higher gears but first is way too low really. My 56 plate has got the bolted diff which thankfully made it a bit cheaper when I had a quaife lsd fitted. Best mod ever, love it. 2.35 diffs do seem a lot harder to come by and do command a premium over the 2.81 auto diffs, as said, they’re about £500. I don’t know how you tell whether they’re bolted or welded without opening them up though.
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