Wideband sensors were once insulated from the counterfeit market due to complexity. In 2016, we are seeing knock-off sensors sold on eBay, Amazon, and some websites. Amazon.com mixes stock of items fulfilled by Amazon (prime) between sellers, which is why we do not offer our products this way.
These knock-offs WILL NOT PROVIDE RELIABLE AIR FUEL RATIOS! Don’t risk your engine, make sure you are getting your highly sensitive equipment from trusted sources like Ballenger Motorsports!