Wednesday, March 13th, 2019 AT 1:14 PM
I have to replace my catalytic converter since have the dreaded PO420 code. I purchased the cat (Magnaflow) direct fit, the catalytic converter is encased with a silver piece of aluminum, is this the heat shield? And secondly how important is the heat shield? This question is for my own knowledge. Can it go installed for a period of time without one?

