I just had my upper catalytic converter replaced on my 2010 Honda Accord LX-P 4-Cyl. I kept my old one that my mechanic took off and I was trying to find a serial number on it so I can find out what it's worth if I take to a Salvage. Can someone help me with this?

 

I don't think serial/part numbers are stamped on honda parts. If it was the original from your honda, you can find the oem part number on a site like hondapartsnow.com.