what is part on side of motor that mount to motor mounts

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the arm that is mounted on the side of the motor and comes over and mounts to the motor mount i need to know what it is called and where i can get one it does not come with the motor mount ,the piece on the side of the motor broke the motor mount is fine can u help me ?it is a grand am se 3.4 motor front wheel the say that makes a difference thank u