The Hinge Cam Riser is an OEM part for Samsung refrigerators. It is designed to facilitate the smooth opening and closing of the refrigerator door by ensuring proper alignment and support. Causes of a bad hinge cam riser can include wear and tear over time, physical damage due to impacts or mishandling, and excessive force applied during door operation. Symptoms of a bad hinge cam riser include: Difficulty in opening or closing the refrigerator door A door that sags or does not align properly Unusual noises when moving the door Increased strain on the door hinges This OEM Samsung part is also compatible with some Kenmore models.DA66-00268A (AP4153514) replaces 2040172, DA66-90113B, PS4156650.