Aqua Rite SWG Main Board bad component

[Nevets]

I have a Goldline SWG and the main board (part number 066012C-1 Rev C) had a bad component on it. It is the large black round resistor? marked SA SL32 2R025 (RZ3 on the main board). It is cracked and when I removed the board from the main unit the component fell apart. I am not sure if is resistor is the correct name for this part. The part is black, it is about 1 1/4 inches in diameter and about 3/16 of an inch thick (slightly larger than a quarter although about the thickness of three quarters). It sits on the upper right side of the board and has two leads that are soldered into the board. There is also a burn mark (soot) where the component sits on the board. I would like to attempt to replace this part instead of paying an un-Godly amount of money for a new main board. I wish I had a schematic for this board so that I can further identify the part.

Can someone advise me as to what the part is really called and if there is a source for this specific part so that I can replace it. This would allow me to see if the entire board is bad or if it is just this component.

Help please......