Upper Fuser Gear compatible with AR 150, AR 152, AR 160, AR 161, AR 163, AR 200, AR 201, AR 205, AR 207, AR 1250, AR 1621, AR 1650, and AR 5316 copiers.Part numbers: NGERH0540FCZ3 and NGERH0540FCZ1.This replacement gear is designed to restore fuser functionality.