This is Oxygen Sensor replacement for Kohler EFI engines.
For Kohler CH18 CH20 CH22 CH23 CH25 CH620 CH640 CH670 CH680 CH730

For use on Kohler:

Command EFI 19, 23hp engines
Aegis ELH775 Engine (2017 and newer)

Fits Argo Atv Models:

Avenger 8x8 LX, S, ST, STR, STX, LX (2017 and Newer)
Conquest 8x8 XT, XTX, Lineman (2017 and Newer)
Frontier EFI 19hp 6x6
Frontier EFI 23hp 6x6
HDI 750 6x6
Huntmaster 8x8 Std, R, X, Z, ZX (2017 and Newer)