Replace your factory u-bolts with these zinc plated corrosion resistant Tuff Country 36002 Dodge Ram 2500/3500 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: 2003-2013 Dodge Ram 2500 4WD (w/4 inch axle tube, Lifted w/4 inch blocks) 2003-2012 Dodge Ram 3500 4WD (w/4 inch axle tube, Lifted w/4 inch blocks) Tech Specs: Bolt Diameter: 9/16 Inch Inside Diameter: 4.125 Inches Length: 17 Inches Bend Type: Round