dont know the exact term, pero eto yung alternator/aircon belts na may ngipin o groves.

my stock/oem is non ribbed. from what i heard, better daw yung may ngipin against don sa wala.

can i switch to the ribbed ones? meron pa bang ibang papalitan piyesa bukod sa belts para maka switch?

wla kaya masamang effect ito?