CURT Replacement Chevrolet Silverado, GMC Sierra 2500, 3500 HD Puck System 5th Wheel Roller Adapter, 20,000 lbs, Hitch Head and Roller Required Model 16023CURT Replacement Chevrolet Silverado, GMC Sierra 2500, 3500 HD Puck System 5th Wheel Roller Adapter, 20,000 lbs, Hitch Head and Roller Required Model 16023 The CURT OEM puck system 5th wheel roller adapter for GM pickups combines the functionality of a CURT 5th wheel roller with the strength and convenience of GM's truck bed puck system. The adapter is designed to securely mount a CURT 5th wheel roller and hitch head into the bed of your Chevy or GMC