Mallory 339 Distributor Rotor/Shutter Wheel (6Cyl) Developed specifically for 45 and 46 Series distributors Perfect fit for 6 cylinder applications Delivers unrestricted energy flow Features corrosion resistant brass inserts and stainless steel rotor springs Made of an innovative, space age plastic with high dielectric strength that's ideal for today's high energy ignitions Magneto rotor Comes in red color