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General E46 Forum
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Old 12-25-2012, 01:12 PM   #1
warriorpluto
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Drain plugs

Any way around having to pay over $20 each for transmission and deferential drain plugs? Is it necessary to change them?

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Old 12-25-2012, 01:16 PM   #2
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You do not need to change them.
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Old 12-25-2012, 01:28 PM   #3
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You need the crush washers for one of them...I think diff, but don't quote me. Check realoem.com for PN or just get them from dealer.
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Old 12-25-2012, 02:33 PM   #4
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$20 each? More like $20 for all four! ECS has each of them for ~$5. I imagine eBMWparts would have them cheaper still.

In any event, replace the crush washers on the diff (about 50 cents each). Does the trans even have crush washers?

Luke

Edit: apparently I can't read... as Dmax covered my second point an hour ago

Last edited by lmr2wil; 12-25-2012 at 02:34 PM.
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Old 12-25-2012, 02:45 PM   #5
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The drain plugs I bought during the summer for my diff (BMW) were aluminum with a channel around the rim of the plug head and a silicone "O" ring.
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Old 12-28-2012, 08:30 PM   #6
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$20 each? More like $20 for all four! ECS has each of them for ~$5. I imagine eBMWparts would have them cheaper still.

In any event, replace the crush washers on the diff (about 50 cents each). Does the trans even have crush washers?

Luke

Edit: apparently I can't read... as Dmax covered my second point an hour ago
Did ecs fix their excessive shipping charges for small items?

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Old 12-28-2012, 08:32 PM   #7
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I dont understand why people feel the need to replace parts that never wear out and dont even move....
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Old 12-28-2012, 09:32 PM   #8
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Just replace any crush washers. Replace orings that are old.
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Old 12-29-2012, 12:09 AM   #9
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I dont understand why people feel the need to replace parts that never wear out and dont even move....
Improved design may be one. Another might be the TIS that tells you to replace the part when it's removed. Mine are aluminum, going into a steel housing. The rim with the "O" ring could be easily compromised, even with the correct torque setting.
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Old 12-29-2012, 09:23 AM   #10
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I dont understand why people feel the need to replace parts that never wear out and dont even move....
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Old 12-29-2012, 09:28 AM   #11
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Improved design may be one. Another might be the TIS that tells you to replace the part when it's removed. Mine are aluminum, going into a steel housing. The rim with the "O" ring could be easily compromised, even with the correct torque setting.
Bringing aluminium and steel together in a fixing should be really be avoided. Why are you putting aluminium with steel? If steel against steel is an option I would go with that.
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Old 12-29-2012, 10:16 AM   #12
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Bringing aluminium and steel together in a fixing should be really be avoided. Why are you putting aluminium with steel? If steel against steel is an option I would go with that.
This would need to be discussed with BMW's engineers

Luke
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Old 12-29-2012, 11:05 AM   #13
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This would need to be discussed with BMW's engineers

Luke
Well while you are at it ask them about galvanic dissolution and the galvanic series of metals. Its a DRAIN PLUG. Like i said. If you can get a steel one use it.
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Old 12-29-2012, 01:38 PM   #14
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The BMW sourced part is aluminum. I understand galvanic corrosion with dissimilar metals, however there are plenty of parts in our cars where steel directly contacts aluminum without an issue. Wheel lugs, engine studs, an array of nuts, bolts and washers, the plate between the engine and tranny. The list is truly endless.
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