Hi All,
I am beginning to part out my 135i and next thing to go is my JB4. It is an N55 JB4 and has harness A, which I believe is for 2011 135's. Can also be used for other N55 models like the 335i.
This JB4 has the N20/N55 Stage2 FlexFuel Wires attached and is ISO updated. As a side note don't be put off by the flex fuel wires, there is no need to use them as I do not and the JB4 works perfectly.
Please let me know if you have any questions or concerns.