Rear Differential plug size - CrossfireForum - The Chrysler Crossfire and SRT6 Resource


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Old 04-19-2017, 05:58 PM
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Default Rear Differential plug size

I want to change the rear diff fluid. I have looked everywhere but in the right place. I can not find what size torx bit do I need for the fill plug. I have a T55 and it looks 2 sizes larger(T70) This would save me a lot of time knowing so.
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Old 04-19-2017, 06:05 PM
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Default Re: Rear Differential plug size

According to chuk_138 :
Quote:
Two plugs, 14mm hex. Fill plug is on the driver's side, drain on passenger. Takes about 1.6 liters. Just have it on a level surface when refilling it, all the way to the fill plug opening.
You can Amazon it :
Amazon Amazon
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Old 04-19-2017, 06:40 PM
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Default Re: Rear Differential plug size

It is not a hex, This is an SRT6 and I looked and they are torx
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Old 04-19-2017, 07:04 PM
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Default Re: Rear Differential plug size

OK, then Chuk must be wrong.
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Old 04-20-2017, 08:29 AM
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Default Re: Rear Differential plug size

Different punkins?

Hmmmm.....
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Old 04-20-2017, 08:50 AM
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Default Re: Rear Differential plug size

The rear cover is reverse torx, but both my fill and drain plugs are the normal big hex...
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Old 04-20-2017, 08:53 AM
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Default Re: Rear Differential plug size

The drain is a smaller torx, forgetting what size. The fill is definitely bigger. What do you mean reverse? Are you saying it is a left hand thread?
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Old 04-20-2017, 09:24 AM
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Default Re: Rear Differential plug size

Could you please post some pictures ?
Everything I have been able to find on MB forums or elsewhere says the plugs are 14 mm HEX, both NA and SRT6.
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Old 04-20-2017, 09:52 AM
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Default Re: Rear Differential plug size

I WILL get under the car later. The only possible thought is, I bought the car a year ago. I didn't know a Wave Track Differential had been installed till I saw the sticker next to the differential. I would not understand the plugs being changed from hex to torx.
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Old 04-20-2017, 10:20 AM
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Default Re: Rear Differential plug size

Quote:
Originally Posted by ala_xfire View Post
According to chuk_138 :


You can Amazon it :
https://www.amazon.com/Neiko-10074A-...s=14mm+hex+bit
14 mm hex it is as stated in this old thread. CLICK

Last edited by onehundred80; 04-20-2017 at 08:12 PM.
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Old 04-20-2017, 10:25 AM
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Default Re: Rear Differential plug size

Quote:
Originally Posted by ala_xfire View Post
According to chuk_138 :


You can Amazon it :
https://www.amazon.com/Neiko-10074A-...s=14mm+hex+bit
14 mm (.551) hex it is, as stated in this old thread. CLICK
If you carefully grind .005 off each of the six faces of a 9/16" (.562) hex wrench you can make your own in a pinch.

Last edited by onehundred80; 04-20-2017 at 08:11 PM.
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Old 04-20-2017, 03:47 PM
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Default Re: Rear Differential plug size

You all are correct. It is a 14 hex, it was difficult to see and get a good grab on it with the rust. They are both out and draining. Thanks for the best info out there.
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Old 04-20-2017, 05:13 PM
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Default Re: Rear Differential plug size

I rekon you'll listen to us next time, you young whippersnapper !
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Old 04-20-2017, 07:36 PM
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Default Re: Rear Differential plug size

I was listening, just was not hearing.
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Old 04-20-2017, 07:51 PM
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Default Re: Rear Differential plug size

Quote:
Originally Posted by onehundred80 View Post
14 mm hex it is as stated in this old thread. CLICK
Quote:
Originally Posted by onehundred80 View Post
14 mm (.551) hex it is, as stated in this old thread. CLICK
If you carefully grind .005 off each of the six faces of a 9/16" (.562) hex wrench you can make your own in a pinch.



Dave, both links don't work (where you have the CLICK).

.
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Old 04-20-2017, 08:15 PM
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Default Re: Rear Differential plug size

Quote:
Originally Posted by GraphiteGhost View Post
Dave, both links don't work (where you have the CLICK).

.
That is funny because I checked them at the time and they worked. I just did them again, the size is in the Pelican Parts How To.
It is a good job I remembered it was done by harbor or it would have taken ages to find.
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Old 04-21-2017, 07:35 AM
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Default Re: Rear Differential plug size

Quote:
Originally Posted by ala_xfire View Post
I rekon you'll listen to us next time, you young whippersnapper !
Yup.

Old farts are quite sensitive, you know?

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Old 04-21-2017, 07:38 AM
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Default Re: Rear Differential plug size

BTW- alaxfire and I found the 14 mm drive (1/2") at NAPA for ~ $8 as I recall.....
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Old 04-21-2017, 07:39 AM
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Default Re: Rear Differential plug size

And I would guess that we don't have to warn you to always remove the filler plug (top) first, right?
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Old 04-21-2017, 08:12 AM
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Default Re: Rear Differential plug size

I used this kit from Harbor Freight to get the 14mm & 17mm hex heads for the diff & tranny.
Runs $14 and you can get a 20% discount coupon from various publications.

9 Piece 3/8" and 1/2" Drive Metric Hex Bit Socket Set
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