GOOD NEWS. . . . The PICTURE UPLOAD FUNCTION IS WORKING !!! The tech folks at the parent company have been able to remedy the issue. You can upload pictures once again. Thank you for your patience.
They are the same part, both are 160*F
Merc may change a design or iin most cases, it changes vendors so the part number is changed to keep track of configuration. In any case you can use either and they both work the same