This engine variable valve timing for the Hyundai Cadenza and Kia Optima is a genuine OEM part. It is compatible with engines from 2011-2019 and has part numbers 504R53CA00, 22110-3CAB0A, 221103CAB0A, 504R5-3CA00, and 221103CAB0. The manufacturer part numbers for this valvetrain component are 243553CAB2 and 24355-3CAB2. It is made by the trusted brand Hyundai and is perfect for those looking to replace their engine's valve timing.