o2 sensor e36/z3 compatibility question

[B3Svert]

I recently replaced the Cat on a 97 Z3 1.9 and although it drives fine now and seems to have the normal power level the fuel consumption seems very low. A knackered o2 sensor could be the issue here from what I've read so I'm going to change it and see what difference it makes.

Before I buy a new part, I will also be stripping a 1993 e36 325i this weekend and was wondering if the o2 sensor from that would fit the 1.9 Z3, does anyone know?

[mini1380cc]

Run a parts query on the Euro Car Parts website using the number plates for the same part and cross check the resulting part numbers. I doubt it will be the same. I have a z3 1.9 and a 523 and the o2's are different.

[B3Svert]

ECP does indeed show different part numbers which is a shame, thanks

[E30M3SE]

Not according to this

[mini1380cc]

that link just comfirms that the z3 1.9 is not the same.