Trying to get my facts straight before I remove the old cats and replace them with Walker brand parts.
Difficult to access the nuts/bolts and O2 sensors due to confined workspace.
- It looks like the foward flange is loosened by removing two nuts from the manifold side of the flange, and the third nut from the exhaust side. Is that correct? All nuts are 14mm, yes? Any tricks on gaining access to the forward flange nuts? Or any tool tips?
- On the rear flange of the old forward cats, the flange was threaded with two studs which were nutted from the exhaust side. However the rear flange on the new Walker cats are not threaded… just slotted. So, will any stainless bolt/nut work as a replacement there?
- O2 sensor takes a 22mm open wrench, yes?