This Napa Echlin RR128R distributor rotor is a high-quality replacement part for your GMC 6cyl ignition system. It is made of durable phenolic and metal materials and has a matte black finish. The rotor is designed to fit with push-on and press-on mounting styles and is compatible with vintage parts. This distributor rotor is suitable for use in cars and trucks and is a great addition to your collection of parts and accessories. It is manufactured in the United States and has a manufacturer part number of RR182R. Upgrade your ignition system with this reliable and stylish Napa Echlin RR128R distributor rotor.