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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 09-20-2012, 08:05 PM   #1
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Join Date: Sep 2012
Location: forest hill, md
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differential looks wet

so I noticed the other day some wet spots on the ground where I park. I looked under my car and it looks like the differential, I think, is wet. could it b just a gasket or just loose? how easy to replace gasket or tighten. how much for gasket and new fluid?
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Old 09-20-2012, 08:46 PM   #2
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all i've seen diff's look wet, as long as its not pouring out, i wouldn't worry about it. there are diy's out there that replaces the seal if you want to do it...do a search
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Old 09-24-2012, 09:09 AM   #3
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I have the same problem. Very small leak. From my searches, it's the pinion seal. I was quoted $500 to replace. The DIY says it's a PITA as you have to use a seal press. On my to do list.
Proud owner of '04 M3 Convertible:
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Old 10-01-2012, 06:26 AM   #4
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If its dripping fix it. Seals dont usually press out. Pry out then use seal driver and floor jack under work bench if u gotta. Tightening means should change gasket anyways
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Old 10-01-2012, 07:31 AM   #5
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Just had my seal replace this summer. If the leak is on the same side as the exhaust, it's a PITA. I had mine done at Turner Motorsport. Great work while you wait.
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