Treadmill Doctor Precor 9.33i Treadmill Running Belt Serial# (AJLY. AA64) Review HelpfulOwl Treadmill Belts May 4, 2018September 2, 2018Exercise & Fitness, Exercise Machine Parts & Accessories, Sports & Fitness, Sports & Outdoors, Treadmill Doctor 0 Comment This is the replacement walking belt for the Precor 9.33i Model Walking Belt Size