I'm going to be installing a Tanabe Medallion Touring catback soon, and am wondering the size specs on the 3 bolts/nuts that connect the catalytic converter to the exhaust piping?

I ask because I helped my buddy put an SP2 on his Accord last weekend and while we successfully re-used the stock bolts/nuts, I'd like to put in new hardware on my car if possible. I live literally five minutes from Home Depot so I may as well do it right the first time. I'm also picking up three new exhaust hangers from a local Napa store while I'm at it.

Thanks to anyone who can help, I ran a search and didn't come across what I was looking for.

- Matt

 

Can't remember the size of the nuts/bolts but the Tanabe comes with new mounting hardware already.

 

Even for the cat/catback connection? That's wonderful! The Greddy SP2 only shipped with hardware to connect the new exhaust together, but expected you to re-use the cat connections. (As an aside the SP2 fitment did not impress me in the slightest. We bolted all the sections together correctly, and played around with hanger fitment endlessly, but the SP2 still ends up touching my friend's 05 Accord Coupe rear lip on one side of the opening no matter what we do. It's burning it away gradually. He's going to get the hangers bent soon.)

Thanks JTso. It was your advice I followed to pick up the new Napa hangers. If my exhaust ends up hanging funny I will be looking into the hanger bending mod...

 

I've got the magic info. 10mm bolts all around the exhaust track, with a 1.25mm thread. I had to source new bolts for my new (not on yet) header and its connections. I bought a bunch of 'test' bolts, and determined that these were the right ones. The ones I got from home depot have a 17mm hex head, so make sure you have the right sockets for that too, since the oem honda bolts have 14mm heads on 10mm bolts.

 

Home Depot seems to have the best metric flange bolts and self locking flange nuts.

 

i was about to ask this question. i'll need some bolts when i'm taking off tanabe mt and switch back to oem exhaust.

 

If you buy stainless bolts they will last longer. I had to do hte same home depot run as over time the stock bolts get pretty beat from the heat. Should cost you about 3 bucks at HD