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Old 03-13-2018, 08:57 AM   #1
Subydude81
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Member#: 118266
Join Date: Jun 2006
Chapter/Region: Tri-State
Location: NY, Middletown
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2007 Lexus IS250 RWD
6MT

Default What gasket needed for Q300 exhaust

I recently traded in my 16 wrx for an 18 sti and will be using my q300 but I was in such a rush to remove the exhaust I don't know what kind of gasket goes between the stock downpipe and q300 midpipe. Any help me out.
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Old 03-13-2018, 10:48 AM   #2
shadowsports
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'17 STI LMT '08 LGT
DGM / QSM

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Originally Posted by Subydude81 View Post
I recently traded in my 16 wrx for an 18 sti and will be using my q300 but I was in such a rush to remove the exhaust I don't know what kind of gasket goes between the stock downpipe and q300 midpipe. Any help me out.
I have a '17.. but if the DP is stock, the kit comes with everything you will need. Remove the donut gasket from the stock DP.
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Old 03-13-2018, 11:07 AM   #3
Subydude81
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Originally Posted by shadowsports View Post
I have a '17.. but if the DP is stock, the kit comes with everything you will need. Remove the donut gasket from the stock DP.
Yea but I'm reusing the exhaust and the gasket crumbled to pieces.
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Old 03-17-2018, 12:54 PM   #4
shadowsports
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DGM / QSM

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The gasket is standard. Use a pencil and piece of paper to trace the flange diameter and holes. Go to any auto parts store. It will cost you $3-5 dollars. Or you can spend a little more and get a metal exhaust gasket. Either will work. You might need new bolts and nuts if this is second hand. Buy high quality grade8+ steel bolts so they won't snap.
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