This belt has 4 ribs on it. I believe with other belts the burning that people smells is because they also sell a belt with 5 ribs on it and say its compatible. I believe the 5 rib belts are just a hair too wide. So they rub while spinning. This belt.is just perfect.I changed the belt, heating element, thermostat, and thermistor all at the same time since I was already messing around with the dryer. It's like a new machine now.