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Discussion Starter · #1 ·
Hey Guys,

So I picked up a M98 from a 2005 IS300 and seems the carrier bolts don't fit the same as a 2003. I left the bolts at the junkyard cause figured they would be the same. Maybe they are mounted different or am I missing something
 

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Discussion Starter · #3 ·
Yeah I thought so as well really weird. I will get some pics of it.
 

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Discussion Starter · #4 ·
Welp apparently they are not the same bolts...

Also shows different stopper for 04-05 as well.

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Different part number is from manufacturer changed suppliers. Same parts. One made in one plant. The other from another. I have swapped hundreds over the years. From IS to IS, from FRS and BRZ. They all interchange. The FRS and BRZ just need a bushing mod or swap. So if it is from an IS300 from 2001 to 2005 and going in the same years. They are exactly the same.
 

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Discussion Starter · #6 ·
Different part number is from manufacturer changed suppliers. Same parts. One made in one plant. The other from another. I have swapped hundreds over the years. From IS to IS, from FRS and BRZ. They all interchange. The FRS and BRZ just need a bushing mod or swap. So if it is from an IS300 from 2001 to 2005 and going in the same years. They are exactly the same.
I would have to agree with you but the stock one from a 2003 with T1 stamp on it the hole sizes are bigger see below.

2003 IS 300 M96 Case Stamped T1.
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2005 IS 300 M98 Case Stamped T2
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For some reason on here I'm soo happy to see someone using mm 🤭

I dont know why it is an odd size like that, if it is a Jap car they always use metric so should be to accomodate an M16 bolt. You could drill it out, it only needs to be a minimum of dia 16.1 to clear the screw
 

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