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Old 01-14-2010, 02:49 AM
05 2.5 alt dawg
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I think bank 1 is the one in the exhaust manifold. A lot of altima owners have had problems with this part. I just replaced mine 2 weeks ago. I replaced the stock manifold with cat with an after market header without a cat and a spark plug non fouler on the 2nd oxygen sensor to trick the ECM and turn off the SEL light. Total cost was $150 vs. $600 at the shop. Other than the heat shields, the only part you have to remove to get to all the manifold bolts is the alternator.
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