I have 2 sensors and I know for sure that one is a knock sensor, it has a black plastic housing. The other sensor that I have is identical but has a blue plastic housing. Are these both knock sensors? I think one may be for a D-series and one may be for a B-series, or maybe a difference in generations. Does anyone have any knowledge of this?

 

My B and D both had blue housings I think, could be different years? BTW, nice username.

 

i have a 95 gsr and knock sensor is green if that helps at all....

 

Damn there's a whole array of colors.