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DIYAutoTune O2 sensor flanges allow you to swap in a wideband oxygen sensor without welding in an extra bung, and they match the factory bolt holes and outline exactly. These 2-bolt flanges have the bolt holes 44mm apart (center-to-center). If your factory O2 sensor mounts with two bolts instead of threading into the pipe, here is what you need to install a wideband.
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$15.00
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