Part Number: 4019190-1 (Gyro synchronizer)Part Number: 4019190-16 (Gyro synchronizer)Part Number: 4019190-18 (Gyro synchronizer)Part Number: 4019190-2 (Gyro synchronizer)Part Number: 4019190-4 (Gyro synchronizer)Part Number: 4019190-5 (Gyro synchronizer)Part Number: 4019190-6 (Gyro synchronizer)Part Number: 4019190-7 (Gyro synchronizer)