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Old 08-02-2013, 01:06 PM   #1
boilermaker29
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Default Rear Differential Plugs Torx Shaped?

I was going to change the rear diff fluid in my 2011 2.5i with my nice 13mm square socket and found this instead...



WTF When did they change these to hex plugs? The service manual even shows it as square. Anyone know the size? Anyone who's encountered this please comment!
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Last edited by boilermaker29; 08-07-2013 at 09:54 PM.
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Old 08-02-2013, 01:25 PM   #2
yertle
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Why did you take a photo from the side? Really hard to tell what's going on - but they look like allens to me.
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Old 08-02-2013, 01:32 PM   #3
boilermaker29
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Do you not see that big metal plate in front of the differential? I think I'm reading on other sites that they're 10mm hex drives.
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Old 08-02-2013, 02:42 PM   #4
yertle
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Quote:
Originally Posted by boilermaker29 View Post
Do you not see that big metal plate in front of the differential? I think I'm reading on other sites that they're 10mm hex drives.
Yeah I see the plate, just figured you could have gotten a little more head on. Good to hear you found the correct size.
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Old 08-02-2013, 03:45 PM   #5
424wrx
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weird. my 08 wrx is 1/2 square drive plugs. just changed the diff oil last weekend.
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Old 08-03-2013, 12:00 AM   #6
04ScoobyWtf
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That's normal I do a lot of diff fluid changes and some have 1/2 and a lot off the newer legacies and imprezzas have 10mm allens. You can get one at HF for like 5? Auto zone probly has them too. I wouldn't bother buying an expensive tool if you only work on your own stuff
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Old 08-03-2013, 12:09 AM   #7
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For the front diff you will need a 8mm Allen for the fill plug and that sucker is tight

Last edited by 04ScoobyWtf; 08-03-2013 at 08:34 AM.
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Old 08-05-2013, 06:01 PM   #8
avk
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These look like 10 mm hex-drive plugs on the side of VA-2 differential (as do the pre-load adjusters). If so, remember they need 18 mm sealing washers.

PS: Is the frond diff. plug 8 mm Allen or TorxPlus TP50, like on 5EAT drain plug?

Last edited by avk; 08-08-2013 at 12:21 PM.
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Old 08-05-2013, 08:56 PM   #9
04ScoobyWtf
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Its a t70 with a 8mm or 10mm check hole and a 8mm fill hole which is on he pass side just above the axle
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Old 08-07-2013, 09:37 PM   #10
boilermaker29
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18mm sealing washers? Man, the manual I have doesn't mention any of this. Maybe I dont have the VA-2 (I did post this in the wrong forum as I have a non-turbo impreza)

Last edited by boilermaker29; 08-07-2013 at 09:55 PM.
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Old 08-07-2013, 10:10 PM   #11
Uncle Scotty
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just make sure ya take the TOP one out first...that way if ya cant get the bottom one out...ya not stranded with no lube in the rear end
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Old 08-08-2013, 12:19 PM   #12
avk
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Quote:
Originally Posted by boilermaker29 View Post
18mm sealing washers? Man, the manual I have doesn't mention any of this. Maybe I dont have the VA-2 (I did post this in the wrong forum as I have a non-turbo impreza)
The VA-2 shown in my FSM has fill and drain plugs on the side of the housing. I don't know the designation for the unit in the photo, but it's fairly certain that those plugs would have crush washers under them.
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