This NOS Pulse Wiper Relay is designed to fit multiple GM vehicles from the years 1975 to 1979. The relay is an original equipment or OEM part with part numbers 4061600 and 2210011. It is specifically made for the pulse wiper system, ensuring proper functioning of the wipers on compatible vehicles. This product is a genuine GM part, ideal for restoring or maintaining the original functionality of the wiper system in classic vehicles from the specified model years.