Next unscrew the bolts at the back of the converter. Then locate the catalytic converter at the center of your exhaust system and remove the oxygen sensor with a ratchet wrench.
The exhaust pipe size on this 1991 c1500 truck is 25 inch outside diameter.Ĭatalytic Converter Body Shape. Universal-fit converters need the associated components and vehicle-specific parts to be purchased separately and then assembled together. Install universal catalytic converter without welding. High Flow Racing Catalytic Converter Audi A4 2005 2008 477 73 How To Install Universal Catalytic Converter Without Welding. How to replace catalytic converter in your car DIY with Scotty Kilmer. It is sluggish and loses power on hills and based on its age it is a safe bet that replacing.