Constant velocity (CV) joints transmit torque to drive wheels while allowing suspension and steering articulation. Typically found on front-wheel drive and all-wheel drive vehicles, they are critical components of the driveshaft assembly. Internal design features—such as ball-and-cage or tripod configurations—maintain consistent rotational speed regardless of operating angle. Boots protect the joint from contamination while retaining lubrication, and are a common failure point. CV joints are specified by joint type, driveshaft spline count, and boot material.