3,500 lb Trailer Axle U-Bolt Kit – Fits 2-3/8″ Round Axles

Secure your trailer suspension with this complete 3.5K trailer axle U-bolt kit. Designed for 2-3/8″ round trailer axles, this hardware package provides the essential components needed to attach leaf springs to the axle and keep your suspension system operating safely and reliably.

Whether you’re replacing worn hardware, performing axle maintenance, or building a trailer from the ground up, this kit delivers the strength and durability required for dependable towing performance.

Complete Suspension Mounting Hardware Kit

This kit includes U-bolts, tie plates, and mounting nuts needed to secure your trailer axle to the leaf spring assembly. Manufactured from durable steel components, these parts are built to withstand the demands of everyday towing and heavy trailer use.

Key Features

• Designed for 3,500 lb trailer axles
• Fits 2-3/8″ round axle tubes
• Heavy-duty steel construction
• Securely mounts axle to leaf spring pack
• Ideal for axle replacement and suspension repairs
• Corrosion-resistant finish for long service life
• Compatible with most common 3.5K trailer axle brands
• Perfect for maintenance, repairs, and new trailer builds

What’s Included

• (4) U-Bolts
• (2) Tie Plates
• (8) Hex Nuts

Specifications

Common Applications

• Utility Trailers
• Landscape Trailers
• Cargo Trailers
• Equipment Trailers
• Boat Trailers
• ATV & UTV Trailers
• Custom Trailer Builds

Important Installation Note

This kit is designed to secure the axle assembly to the trailer’s leaf springs. Spring seats and leaf springs are sold separately when required for your specific application.

Built for Reliable Suspension Performance

Proper suspension hardware is critical for maintaining trailer stability and safety. This 3,500 lb U-bolt kit provides a dependable mounting solution that helps keep your axle securely attached and your trailer performing as intended.

Why Buy From The Trailer Parts Outlet?

• Fast nationwide shipping
• Competitive pricing
• Bulk and dealer purchasing available
• Expert trailer parts support
• Quality components trusted by trailer builders and repair shops

Order your 3.5K trailer axle U-bolt kit today and keep your trailer suspension secure and road-ready.