MSD designed this 8567 Rotor for use on part number 8489, a Crank Trigger Distributors. Manufactured from injection molded high-quality and voltage insulating Rynite, it also comes with a stainless steel/low-resistance brass terminal that resists carbon tracking. This rotor is designed with performance in mind and comes standard on MSD Crab Cap Crank Trigger Distributors. Rotor tip screwed on for high RPM useage. MSD 8567 Distributor Rotor Features: Fits PN 8489 - MSD Crab Cap Crank Trigger Distributor Application: High RPM Racing Rotor Color: Red Rotor Material: Rynite Contact Terminal Material: Brass Quantity: Sold individually Note: This rotor will not fit Flathead or FlatTop distributors. Please use rotor PN 84679. From street cruisers to Top Fuel dragsters, MSD's ignition systems have been the industry leader for over 40 years. MSD continues to push the envelope with cutting-edge ignition technology as well as intake manifolds and EFI systems.