Split Column at comma

Would there be a formula for splitting a line like the following into separate cells:

rear handle assy, replaces 20870-65100, 20870-65101, 20870-65102

Below is what I want it to look like: (COL indicates column separators, for example only, not to be used)
Instead of:

(COL1) rear handle assy, replaces, 20870-65100, 20870-65101, 20870-65102

Should be:

(COL1) rear handle assy (COL2) replaces 20870-65100, 20870-65101, 20870-65102

Basically, the formula could define the separating point by splitting "replaces" and everything after that into a new column. PLEASE NOTE that the comma after "assy" has been removed in the finished example...that's how I want it, if possible. I don't want that first comma there after the line has been split.

Thanks in advance, I appreciate any help very much, as I'm an Excel novice.