how do you replace the catalytic converter on an 05 nissan altima?
Jan 17, 2011 at 5:32 AM
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JACOBANDNICKOLAS
✓Experienced Mechanic
110,248 POSTS
If it is a direct fit part, unbolt the converter at each ends (flanges) and replace. If it is a universal converter, it should come with directions because you need to cut the old one off and you don't want to cut anything too short.