2011 M3 Sedan rear diff leak

wilkr1 · 10-11-2023, 03:34 PM

Whats up fellow enthusiasts. Any one had differential leak repair by shop?
I have leak and was quoted 2400 for leak repair. Is that right?

Located Atlanta GA, anyone recommend a shop with reasonable rates? Thanks

greyspoke · 10-11-2023, 05:52 PM

I had a pinion seal leak causing the differential to leak. It was about $1200 to replace the seal and flush the differential at the dealership.

RocketyMan · 10-12-2023, 07:12 PM

Wow! That's highway robbery! There are tons of threads on this to DIY--if you're mechanically inclined. Needless to say, it didn't cost me nowhere near the amounts posted above...even on my own time and materials.

Most likely, I'd wager it's a pinion leak, too.

https://www.m3post.com/forums/showthread.php?t=2018581

tigermack · 10-13-2023, 06:27 PM

All the seals/bearings can be installed just by a basic bench press. That's over $1000 for labor is insane.

amrazM · 10-25-2023, 04:48 AM

a rebuilt diff from dan, diffsonline, is $1600 after the core charge. you can change the diff in this car in under two hours. find a new shop.

Theodore2 · 10-30-2023, 09:06 AM

$2,400 is too much, even with a high labor rate. The job is kind of a PIA, as posted above $1,200 seems reasonable for dealer pricing and obviously less at an independent shop. Check out this DIY here to see what is required of the shop that does the work.

ksc · 12-18-2023, 09:27 PM

Just did this DIY and it was pretty easy. Also replaced all 3 wear and tears for the driveshaft while I had it off (guibo, center support bearing, cv joint). Took a few days total but it was worth it. Didn't touch the axles of the diff, just replaced the pinion seal.

10-11-2023, 03:34 PM	#1
wilkr1 Private First Class 9 Rep 142 Posts Drives: 2011 M3 Sedan JB Join Date: Apr 2007 Location: Atlant GA iTrader: (1)	2011 M3 Sedan rear diff leak Whats up fellow enthusiasts. Any one had differential leak repair by shop? I have leak and was quoted 2400 for leak repair. Is that right? Located Atlanta GA, anyone recommend a shop with reasonable rates? Thanks
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10-11-2023, 05:52 PM	#2
greyspoke New Member 41 Rep 25 Posts Drives: 2010 E92 M3 DCT - Space Grey Join Date: Dec 2012 Location: Tulsa, Ok iTrader: (0)	I had a pinion seal leak causing the differential to leak. It was about $1200 to replace the seal and flush the differential at the dealership.
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10-12-2023, 07:12 PM	#3
RocketyMan First Lieutenant 229 Rep 349 Posts Drives: E53 X5, E83 X3, E93 M3 Join Date: Nov 2022 Location: PNW iTrader: (0) Garage List 2008 BMW M3 E93 [10.00]	Wow! That's highway robbery! There are tons of threads on this to DIY--if you're mechanically inclined. Needless to say, it didn't cost me nowhere near the amounts posted above...even on my own time and materials. Most likely, I'd wager it's a pinion leak, too. https://www.m3post.com/forums/showthread.php?t=2018581 __________________ 2008 BMW M3 E93 MT R135 └┼┼┼ ..246
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10-13-2023, 06:27 PM	#4
tigermack OPN DIFF 475 Rep 1,908 Posts Drives: 10' E90 M3 6MT LB Join Date: Oct 2012 Location: Pacific Ocean iTrader: (12) Garage List 2010 M3 [0.00] 1995 BMW e36 325i [7.91] 2006 BMW e90 330i [8.34]	All the seals/bearings can be installed just by a basic bench press. That's over $1000 for labor is insane. __________________ '10 LB E90 slicktop/speed cloth/6MT ex. '06 330i 6MT & '10 n54 6MT Msport Autocross vids https://www.youtube.com/user/tigermack https://www.instagram.com/tigermack
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10-25-2023, 04:48 AM	#5
amrazM mTekMods 2143 Rep 2,902 Posts Drives: like a granny. Join Date: Jan 2010 Location: Manhatan iTrader: (1)	a rebuilt diff from dan, diffsonline, is $1600 after the core charge. you can change the diff in this car in under two hours. find a new shop. __________________ 2011 Frozen Black/Fox Red E90 M3 650+WHP G-Power Supercharged First DCT to Manual Conversion Worldwide KW CS, BBS RI-A, BW Headers, Snow 2.5
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10-30-2023, 09:06 AM	#6
Theodore2 Private 44 Rep 50 Posts Drives: E92 M3 Join Date: Aug 2022 Location: Tampa, FL iTrader: (0)	$2,400 is too much, even with a high labor rate. The job is kind of a PIA, as posted above $1,200 seems reasonable for dealer pricing and obviously less at an independent shop. Check out this DIY here to see what is required of the shop that does the work.
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12-18-2023, 09:27 PM	#7
ksc New Member 11 Rep 25 Posts Drives: e92 m3 Join Date: May 2021 Location: Bay Area iTrader: (0)	Just did this DIY and it was pretty easy. Also replaced all 3 wear and tears for the driveshaft while I had it off (guibo, center support bearing, cv joint). Took a few days total but it was worth it. Didn't touch the axles of the diff, just replaced the pinion seal.
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