Hi folks, has anyone found a small form factor wideband O2 sensor? I believe the BMW part number 11788567154 is a 12mm wideband and I think KTM and Ducati also run small form factor wideband O2s these days as well. The Genuine items are stupid expensive though so looking for the OEM??
Wideband O2 with M12 x 1.25 form factor?
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you can get an adapter, but everything i am aware of for the normal bosch 4.2, 4.9 is all the larger thread.
You would need a wideband controller to go with the sensor anyhow, likely much easier to run an adapter or ideally just have a bund welded in.
You would need a wideband controller to go with the sensor anyhow, likely much easier to run an adapter or ideally just have a bund welded in.
The adapters are somewhat clumsy, I can remove the M12 bung and weld on a Titanium M18 bung but by the time that is done I might as well have used the BMW Genuine M12 wideband. I am assuming the Zeitronix controller should be able to manage the heater strategy of the OEM BMW wideband O2 and that we may need to calibrate pump current to lambda or just calibrate lambda to ARF from the dyno.
Looks like BMW had those widebands made for them. They are M14 x 1.25. so smaller than the Bosch LSU 4.9 mini but still larger than the standard M12 narrow band O2s. #11 is the 11788567154
