After reading the reviews, I was a bit skeptical about buying this part, but thought that in the worst case I could drill senecio from the inside, since one review suggested buying an 18 wide Dynojet -Sensor mm o2 - matching band. However, as this customer mentioned, the company must have updated the design to fit as I had no issues and did not have to modify (drill) the inside to make the O2 sensor fit. That was great. I have a 2017 Ninja 650 with a full Akra system so I needed the Power Commander which installed with no problems but I also got the Dynojet autotune system which uses the 12mm O2 sensor through the Replaced 18mm sensor that comes with the auto time kit so I'm looking for a 12mm to 18mm adapter) and this was perfect as opposed to welding on the connector and possibly ruining my new exhaust. Also, the Auto Tune kit couldn't be returned, so it was and still is the best solution. The adapter works perfectly in terms of readings to and from the Force Commander. I am very happy with this purchase as it saved me money and saved me from having to weld an expensive exhaust.
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