Coolant tempreture sensor replacement

Question by SethWB posted 1 year 1 month ago in 1996-2001

I want to replace my vw polo 6n1 1.9D 1996' s coolant tempreture sensor, the part number 357919501. I would like to know if I buy 357919501A or 357919501B or one sensor for any other model of vw that matches the diameter of my old sensor, is it ok? Or what is the most important tip when I want to buy online