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17 Posts
Can anyone help me narrow down the Bosch part number for a rear (downstream) O2 sensor for my 04 Lightning.
I've searched online and have come up with 15644 but I think it might be for front (upstream) placement.
So is it 15717 or 15716... Those have come up in search also.
I've searched online and have come up with 15644 but I think it might be for front (upstream) placement.
So is it 15717 or 15716... Those have come up in search also.