Replace your factory u-bolts with these zinc plated corrosion resistant Tuff Country 17152 Silverado/Sierra 3500HD u-bolts. Designed specifically for lifted vehicles. This kit includes (4) u-bolts along with nuts and washers.
Details:

• Rear Axle U-Bolt Kit
• Zinc plated to resist corrosion
• (4) U-bolts, nuts and washers
• Designed specifically for lifted vehicles
• Made In The USA
• Sold As A Kit

Fits:

• 2011-Present Chevrolet Silverado 3500HD 4WD (Lifted w/1 inch blocks)
• 2011-Present GMC Sierra 3500HD 4WD (Lifted w/1 inch blocks)