Seemed awfully high, so I made a few calls, checked online and found the highest was $469 for a direct fit converter or $89.95 for a universal converter. Also, what's the difference between direct fit and universal? The mechanic told me the universal converter wouldn't be a good choice but didn't say why...even when I pressed hard for an answer.
That is probably $754 too much. It is very unlikely your 7 year old car needs a converter, and if it does (and the mileage is under 80K and it was originally sold after this date 8 years ago) it is under the federally mandated emissions warranty if you are in the US.
My guess is that you are looking at a new converter because of a P0420 code, "catalyst efficiency below threshold (bank 1)." That code seems to point an accusing finger directly at the catalytic converter but it is really saying the converter is unable to digest the exhaust. The most common causes are a leak in the intake manifold, an exhaust leak, a bad O2 sensor (possible but not very likely at 7 years old), or dirty fuel injectors. I recommend starting with fuel injector cleaner and if the code does not go away and stay away after a week or so have the intake and exhaust checked for leaks. If still no go, replace the forward O2 sensor. The converter should be the last thing on the list.
One important thing about Toyota exhaust systems - they are stainless steel and will far outlast ordinary steel replacements.
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