new exhaust gasket?

[Russell45]

Gonna pull the header and do a quick leak test before plug chop runs. Do I need to use a new crush gasket when putting the pipe back on or will the "old" one likely still seal good? Old gasket is only 2 tanks old since recent rebuild. Wisdom appreciated.

 

[Blaaster]

It is always best to use new gaskets whenever possible.

No matter how long a gasket has been used from new, it still ends up being a used gasket and should be replaced!

It is in the crushing that the sealing happens!