63-72 Chevy/GMC C10 Truck Carrier Bearing. These Billet aluminum driveshaft carrier bearings feature polyurethane insulators and work with 63-72 Chevy Trucks with a 2-PC driveshaft. These high tech carrier bearings are built to precise specifications and far outlast OE rubber types. Built from T6061 aluminum with low deflection polyurethane insulator and precision bearing, these units can handle much more horsepower and torque than a factory unit.