The product is a Carquest CV Axle Assembly with the manufacturer part number NCV36121, designed for the left side of a vehicle. It is a component of the vehicle's transmission and drivetrain system, specifically for the CV axle assembly. This product is a genuine Carquest part, ensuring quality and compatibility with the vehicle it is intended for. It is a crucial component for transferring power from the transmission to the wheels, essential for smooth and efficient operation of the vehicle.