I just checked the Needswings web site and Rob sells one for before the Cats and a different one for after. I recently purchased the "after the cats" and they fit on both sides just fine. No more engine light.


NeedsWings Performance Products


Quotes from the site
"Bosch replacement primary o2 sensors. Before Catalytic Converter. Price is for 1 sensor, you have 2 on your motor. This sensor is the same right or left."

"Bosch replacement 2ndary o2 sensors. After Catalytic Converter. Price is for 1 sensor, you have 2 on your motor. This sensor is the same right or left. "