Remove both converters, install the new ones. Don't forget the "donut" gaskets.
Two.
Catalytic converters are in the exhaust system so replacing them is a job similar to replacing a muffler. Difference is that the converters are bolted in and have gaskets that must be replaced at the same time.
I just purchased new catalytic converters for my 1999 Subaru Legacy Outback. There are three ports for oxygen sensors. They appear to be on the top of the converters. I just purchased new catalytic converters for my 1999 Subaru Legacy Outback. There are three ports for oxygen sensors. They appear to be on the top of the converters.
I have a 97 Impreza, and it should have 3 catalytic converters, but I took one off, and never put it back on, and my car runs just fine, so my answer is don't worry about it.
There is only one catalytic converter in the exhaust system.
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The new catalytic converter and gasket for my 2005 outback wagon was $830 installed at an independent Subaru specialist. Are you sure that yours is not covered under warranty (80,000 miles, I think)
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Subaru Outback "woodriff key" is good for the life of the vehicle.
105,000 miles
500
A Catalytic Converter reduces unburned exhaust gasses.