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Old 12-30-2020, 04:21 PM   #1
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Rear Sway Bar Bracket Bolt Size

Anyone know what size the rear sway bar bracket bolts are approximately? I know they are part number SU003-00015 but can't find an actual size. I'm looking for the ones that are circles in this image:

I made the same mistake as
. So now I need to replace the bolts and fit some additional nuts behind them. I'd like to get as close as possible to the original OE size bolt when I replace it.
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Old 12-30-2020, 04:36 PM   #2
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I believe they are 8X1.25, probably about 25mm long.
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Old 12-30-2020, 05:27 PM   #3
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What size socket fits on the bolt head and are they OE? @rns294

You can just get something roughly the right length from the hardware store to get you going and drop by the dealership and get actual replacements later
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Old 12-31-2020, 09:34 AM   #4
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A 12mm fits the OE bolt. I looked up the size of an M8x1.25 and I believe that is the correct size or at least very close to it.

I was planning to just get a replacement from a hardware store but I wanted to get a bolt that was roughly the same size/pitch for the sake of strength.
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Old 12-31-2020, 09:49 AM   #5
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Quote:
Originally Posted by rns294 View Post
A 12mm fits the OE bolt. I looked up the size of an M8x1.25 and I believe that is the correct size or at least very close to it.

I was planning to just get a replacement from a hardware store but I wanted to get a bolt that was roughly the same size/pitch for the sake of strength.
Whatever the size, make sure its 10.9 rated.

If MSG is correct these would work
https://www.amazon.com/M8-1-25x25-Me.../dp/B01GUEO53W

Last edited by x808drifter; 12-31-2020 at 10:07 AM.
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Old 12-31-2020, 10:31 AM   #6
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www.boltdepot.com

good source for nuts/bolts/etc.

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Old 12-31-2020, 03:35 PM   #7
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Quote:
Originally Posted by rns294 View Post
Anyone know what size the rear sway bar bracket bolts are approximately? I know they are part number SU003-00015 but can't find an actual size. I'm looking for the ones that are circles in this image:

I made the same mistake as
. So now I need to replace the bolts and fit some additional nuts behind them. I'd like to get as close as possible to the original OE size bolt when I replace it.

You probably have some vestigial threads left in the original captive nut(s). Cleaning those out with a drill will make the reassembly easier.
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Old 12-31-2020, 09:24 PM   #8
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Quote:
Originally Posted by rns294 View Post
A 12mm fits the OE bolt. I looked up the size of an M8x1.25 and I believe that is the correct size or at least very close to it.

I was planning to just get a replacement from a hardware store but I wanted to get a bolt that was roughly the same size/pitch for the sake of strength.
That's correct. JIS 12mm Head Bolts correspond to an M8x1.25 thread pitch. For the sake of a temporary replacement, get the highest grade strength bolt you can get from hardware store.


Order a direct replacement from Toyota/Subaru and that will get you what you want. It's a lot more work to sieve through the repair manual to pull the grade up.
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