i need these two bolts so i can isntall my catback. and honda only has 1....and cant get them till tuesday.

i was wondering if their universal size? so i can go to junkyard and get 2 off of any other hondas. i have the morning off tommorow and am hoping to get it in then.

if anyone knows if they will fit let me know thanks

 

Just plop a bolt in there. The biggest that will fit.

 

The OEM bolt is not "just" a bolt.
I've made my own once because one broke.
The bolt needs to be pretty long and al threaded.
You also need several (locking) nuts and some washers to make it like the OEM one.

Be carefull not to overtighten when you use your creation
Let the spring keep the cat clamped onto the header.
IMO there has to be some movement possible there, that's why there is a donut gasket between header & cat.

 

they look like other Honda bolt/spring combos I've used on other cars, chances are they all use the same part and others will work, I'm 99percent sure on this. I'd rather use a junkyard one then a homemade one.

You can go to www.majestichonda.com , look up the part number for a Honda S2000 and then compare it to a Civic part on their online parts ordering guide.

 

OEM part# = 18231-SR3-A22

A quick search with Google shows its also used in '99 Civic EX, Si, CX and DX, at the rear muffler.