This is a prospective, single-arm, multi-center, interventional study to be conducted in the US and outside the US (OUS). This study will enroll a minimum of 225 patients implanted with the study valve in order to achieve 101 aortic valve replacement subjects each followed for a minimum of 8 years. The study will include male and female patients, 18 years or older, requiring replacement for a diseased, damaged or malfunctioning natural or prosthetic aortic valve. Patients will be followed and assessed after implant annually for a minimum of 8 years.