Replace your factory u-bolts with these zinc plated corrosion resistant Tuff Country 57750 Toyota u-bolts and 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:

• 2007-Present Toyota Tundra 4WD (Lifted w/1.25 inch blocks)
• 1979-1985 Toyota Truck 4WD (Lifted w/ springs or add-a-leafs)
• 1984-1985 Toyota 4Runner 4WD (Lifted w/ springs or add-a-leafs)

Tech Specs:

• Bolt Diameter: 9/16 Inch
• Inside Diameter: 2.5625
• Length: 5.625 Inch
• Bend Type: Square