An ACDelco Professional, premium aftermarket Distributor Rotor is the ideal high quality replacement for your GM vehicle. It is located inside the distributor on the end of the distributor shaft and provides half of the rotary switch (distributor cap). This premium aftermarket replacement distributor rotor is manufactured to meet or exceed your expectations for fit, form, and function. ACDelco offers a full line of Professional, premium aftermarket Ignition System and Switch products for all makes of GM vehicles on the road today. Professional distributor caps and rotors, ignition coils, ignition modules, sensors, relays, switches, and voltage regulators are all designed to replace your worn equipment while providing precise fit, form, and function for your vehicle. ACDelco Professional, premium aftermarket Ignition System and Switch products deliver the high quality you expect from ACDelco while providing the durability and dependability that your vehicle needs. Through our GM Original Equipment and Professional, premium aftermarket product lines, we provide ignition system and switch products for all models of GM vehicles on the road today. With ACDelco Ignition System and Switch products you can rest assured that your vehicle is receiving high quality parts engineered for long lasting performance, durability, and dependability.