Rough Country - 1115 - Carrier Bearing Drop Kit for Chevrolet: 01-06 Silverado 1500 HD 4WD, 01-12 Silverado 2500 HD 4WD, 01-06 Silverado 3500 4WD, 07-12 Silverado 3500 HD 4WD; GMC: 01-06 Sierra 150. FITMENT: Chevrolet: 01-06 Silverado 1500 HD 4WD, 01-12 Silverado 2500 HD 4WD, 01-06 Silverado 3500 4WD, 07-12 Silverado 3500 HD 4WD; GMC: 01-06 Sierra 1500 HD 4WD, 01-12 Sierra 2500 HD 4WD, 01-06 Sierra 3500 4WD, 07-12 Sierra 3500 HD 4WD KIT CONTENTS: Carrier bearing drop KIT CONTENTS: Carrier bearing drop SPECS: Weight: 3.05-lbs FITMENT: Chevrolet: 01-06 Silverado 1500 HD 4WD, 01-12 Silverado 2500 HD 4WD, 01-06 Silverado 3500 4WD, 07-12 Silverado 3500 HD 4WD; GMC: 01-06 Sierra 1500 HD 4WD, 01-12 Sierra 2500 HD 4WD, 01-06 Sierra 3500 4WD, 07-12 Sierra 3500 HD 4WD