O2 sensor and harness

[58LesPaul]

I have a 99 OX66 200hp and sometimes I'll only get 5200 rpm's @ WOT but when I move to another spot I may get 5800 rpm's @ WOT. I cleaned the O2 sensor but even afterwards it still didn't look very good so I thought I would change it. I believe the NKG 21006 is the one a lot of guys have used and had good luck with it but I was thinking I read that they used another harness instead of cutting and soldering the old harness. Does anyone know if this is the correct harness? https://www.ebay.com/itm/151748684382?ul_noapp=true

I had it saved in my Boat & motor folder in my favorites which is why I'm thinking it may be the one.

Thanks

[201pro]

That is the same harness I used for mine.

[58LesPaul]

And it was a direct fit? No splicing and you have an OX66?

From looking at an OEM Yamaha O2 sensor there are 2 separate connectors coming off the sensor, how will that cable I linked above work with this?

[201pro]

The connector has to be spliced to the old sensor harness. Then it will be a direct replacement to the 21006 on any future swaps.