A door check is a small mechanical component that is used to limit the range of motion of a vehicle door as it is opened and closed. It is typically located on the inside of the door, and is designed to prevent the door from swinging too far open or closed, which could damage the door or the body of the vehicle. The door check is typically a spring-loaded device that is mounted to the door frame, and it works by exerting a force on the door as it moves. The part number KD53-72-270A appears to be a genuine Mazda door check, meaning it is a part that has been manufactured or supplied by Mazda specifically for use in Mazda vehicles. It is important to use genuine parts in your vehicle to ensure proper fit and function, and to maintain the warranty of the vehicle. Door checks can fail due to wear and tear, or if they are damaged in some way. If a door check is not working properly, the door may not open or close smoothly, or may swing too far and potentially cause damage.

A door check is a small mechanical component that is used to limit the range of motion of a vehicle door as it is opened and closed. It is typically located on the inside of the door, and is designed to prevent the door from swinging too far open or closed, which could damage the door or the body of the vehicle. The door check is typically a spring-loaded device that is mounted to the door frame, and it works by exerting a force on the door as it moves. The part number KD53-72-270A appears to be a genuine Mazda door check, meaning it is a part that has been manufactured or supplied by Mazda specifically for use in Mazda vehicles. It is important to use genuine parts in your vehicle to ensure proper fit and function, and to maintain the warranty of the vehicle. Door checks can fail due to wear and tear, or if they are damaged in some way. If a door check is not working properly, the door may not open or close smoothly, or may swing too far and potentially cause damage.