BOSCH 15681 Premium Original Equipment Oxygen Sensor - Compatible with Select BMW 325Ci, 325i, 330Ci, 330i, 525i, 530i, X3

Perfect fit and working like a charm.

💯💯💯👍

It was a perfect fit and a great price.

It took me a long time to go outside and tackle this job, but when I went for it and just cut the wires off the old O2 sensor and wrenched that bad boy out of there and replaced it with this O2 sensor. It paid HUGE dividends in that it fixed the check engine light and was exactly the same as the BMW OEM O2 sensor I pulled out. I couldn't be happier and more pleased with this purchase!

Wife's BMW had O2 Sensor issues, so we replaced both of them. Lucky for me that my 14 y.o. is amenable to helping because getting one of them out & in is quite interesting for those of us with large-sized hands! went in quickly, and the code went away. Problem solved.

Excelente, es original, igual al original de fabrica (110.000 millas), se nesesita herramienta, conocimiento y pasiencia para instalarlo. Se apago la luz de motor, fue por Precalentador. Envia señales correctas.

Dont waste your money on dealer "OEM" replacement. This is the same fit on the car and much cheaper. Made a big difference on my car performance as the worn sensors were taking power off the car. My car is back!

I purchased this sensor to replace one of the post-cat o2 sensors in my 2001 BMW 325i. The female wire harness on the new o2 sensors would not plug directly into the male harness like the factory sensors could. After double checking that both sensors and harnesses were in the proper location, I decided rather than removing the sensors from the exhaust pipe to return the products, I would repurpose the factory sensor harnesses. This was accomplished by removing the new, non-conforming harness from the o2 sensors and splicing the four ~20 gauge wires (2 white, 1 gray, 1 black) to the factory harness. The sensors show proper voltage and the sensors appear to perform as they should, however, I feel that by splicing the wires, I've introduced an additional point of failure in the future. For future buyers, I highly recommend rather than placing your full faith in Amazon/Seller's product-vehicle fitment advice, perform a check to ensure the harness does indeed fit your vehicle's wiring scheme prior to committing to the entire task of replacing post-cat o2 sensors. I removed one star for failing to advertise further modification may be required to make the product work with my vehicle, and an additional star for claiming the product is a direct fit for my vehicle.