Bapmic 2720510177 Camshaft Position Sensors & Adjuster Magnets Kit for Mercedes-Benz R171 W203 W209 4+4PCS

Product fit perfectly. Ordered too many based on advice fro mechanic. Seller was gracious in the return process.

I bought these to replace those on my R350. I still got the same codes with one set of them installed. I then replaced that set with the other one in the order. For 5 months I would get the same codes intermittently. I finally bought Genuine Mercedes parts to replace these again. The new ones worked perfectly. Here's a link to the correct part: https://www.amazon.com/gp/product/B011K8PT6U/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 Also, I changed the sensor to the Bosch sensor sold on Amazon.

The magnetic adjusters are not the right diameter and don’t fit despite saying they were compatible with a 06 Mercedes E350. This is advertised as an OEM replacement part but it doesn’t meet the OEM spec tolerances. The crankshaft position sensors are correct and will fit. But they are sold as a set so it doesn’t help when only half of the parts will fit.

Sensor worked fine but magnet did not fit.

I could not get the item to fit myself, so I took it to a mechanic who also could not get it to fit. I had to buy a second set from dealer to get the issue resolved. Finally, due to the delay in getting the car to the mechanic it is out of everyone's return policy. (30 Days) I have contacted the manufacturer, since it has a 12 month warranty. We'll see.