Designed to smoothly transmit torque at a constant speed, the Cardone Severe-Duty Constant Velocity CV Axle Drive Shaft utilizes proprietary engineering processes to ensure they meet Original Equipment form, fit, and function. Engineered for severe-duty applications, the thermoplastic outboard boot provides increased life and durability versus a traditional neoprene boot. The transmission seal diameter is precision-machined after heat treatment to ensure correct surface finish, promoting long seal life. High-quality grease withstands high-temperature and high-torque demands to ensure long-lasting, reliable performance. Boot clamps are pneumatically crimped, creating a perfect seal between the boot and housing. A new axle retaining nut is supplied with every drive shaft assembly for a hassle-free installation, due to the likelihood that the original retaining nut is worn or stripped. Additionally, all CV Axle Drive Shafts are individually verified for straightness, resulting in vibration-free performance at all speeds. We Build It Better: Since 1970, Cardone has been fixing what fails in the auto industry. Our success is fueled by our commitment to build better parts supported by better service.