Review on 🔌 Bosch 11027 Oxygen Sensor: Versatile Fitment for Enhanced Performance by Bim Cook

does not fit connectors on my 2003 BMW E46 325i Sedan M54 Made in April 2003. THESE O2 SENSORS FOR 325I MADE ON AND BEFORE DATE 3/2003. I think there is a year classification for the 325i in 2003. Others like mine were made after that date and use other O2 sensors and other miscellaneous engine parts I found out. For BMWs built after March 3rd you will need Bosch 15680 and 15681 downstreams (both will fit both downstreams). And for upstream you need Bosch 17215 and 17216 (both work for both upstream). The only difference is the color of the rubber that covers the wires and the price. So just buy 2 cheaper down pickups and 2 cheaper up pickups. I don't know if the sensors that fit my M54 engine will also fit the M56. I just hope this helps someone. MUCH LUCK.