randomtask77

I was just wondering if there was anything else that I should be aware of when replacing a catalytic converter? I'm about to order a direct fit replacement online and planning on replacing it myself. Is there anything I should be aware of like gaskets or new bolts and whatnot.

It's just that I don't want to get the car up in the air, get the old cat out and find out I need to replace something else only to put the car back together and going out to get the part.

1992Si

Yep, nuts, bolts, springs, gaskets.

Penetrating fluid, like PB Blaster.

randomtask77

So I do need new nuts and bolts? I can't re-use the ones that I already have on there?

1992Si

I doubt you'll get all of them out with breaking some, rust is not your friend...you may be able to reuse the springs.

freakasis

you will break at least 2 out of the 5 bolts that hold it to the rest of the exhaust. be prepared to drill/hammer them out when the break.

B16AGUY

If the car is obd 2 with an O2 sensor in the cat, be careful when removing it from the old cat. They often break due to being siezed/rust.