I was told by the previous owner that Mercedes Benz themselves told him that the blower regulator needed to be replaced. So I went on eBay looking for it. Here is what I came across.

Blower motor regulator

and then there is this

Heater Blower regulator

and how come when I click on the banner to the right and do a look up on the part. I get two parts? Can someone tell me the difference.

R2022-110518 Blower Regulator Behr 199.00 $101.71 Tomorrow
R2022-128594 Blower Regulator Heater : A/C Behr 199.00 $98.39 Tomorrow


Are these the same thing.... They look different. Thanks in advance