I forgot to grab my Haynes manual on the way out today, does anyone have handy which O2 sensors I should buy for a 98 Cherokee Sport (6cyl)?

I seem to remember reading I needed a total of 4 of them, is that correct? Also any recommendations on which catalytic converter to get?

Thanks all

 

Should only be two O2 sensors, I used Bosch part #13100 for mine.

 

Thanks!