Oxygen Sensor: Build Date & NGK as OE???!!

[MikeDE]

I went in to my local parts store to get an o2 for my Touring, and naturally I have no VIN for the car that the m42 was in. So, he tells me that production date 08/1990 is the date at which the part #'s differ and that there are (2) different parts/part#'s.....I looked on realoem and found that there are (2) different parts no matter which build date I choose, be it before or after Aug 1990. They only differ on length, 800mm or 940mm.

And I ask him if it's a Bosch and he says 'No, NGK was OE for BMW'.....anyone have any input??

[JTDay]

He's probably just reading what he sees on a computer screen. The 800mm one was superseded by the 940mm one. As for the branding NGK will work just as fine as a Bosch unit. All the japs (i did bak when i had a jap car) run NGK plugs.