EZ Loader Leaf Spring Bolt and Bushing Mounting Kit 300-015973

Part Name: Leaf Spring Bolt & Bushing Mounting Kit
Part Number: 300-015973

OEM EZ Loader suspension hardware kit designed to secure the leaf spring at key pivot points while maintaining proper movement and alignment.

This kit combines a nylon outer bushing with a steel inner sleeve to create a controlled pivot point that handles both movement and load under real-world towing conditions.

Clamping & Pivot Function

This kit is used at suspension pivot locations where the leaf spring connects to the trailer frame, shackle, or hanger.

It allows the spring to move freely while keeping the connection tight and properly aligned under load.

Over time, worn bushings or hardware can create looseness in the suspension, leading to poor tracking, uneven wear, and unwanted movement.

Replacing these components restores proper suspension function and helps maintain consistent trailer performance.

Product Details

Key Features

• OEM EZ Loader suspension mounting kit
• Designed for higher-capacity spring systems (C-2 and above)
• Used on trailers with spring ratings above 2300 lb capacity
• Reduces metal-to-metal wear and noise
• Restores proper suspension movement and alignment
• Heavy-duty 9/16" hardware for increased load support

Dual Bushing System Explained

This kit uses both a nylon outer bushing and a steel inner sleeve to balance movement and load.

• Nylon bushing: reduces friction, absorbs vibration, and prevents metal-to-metal contact
• Steel sleeve: supports the mounting bolt, maintains alignment, and prevents bushing compression

Without both components working together, the suspension either wears prematurely or loses structural stability.

Where This Kit Is Used

• Leaf spring eye connections
• Shackle mounting points
• Equalizer pivot locations

These are high-movement areas where maintaining a tight but flexible connection is critical.

Replacement Guidance

Suspension bushings are wear components and should be inspected during regular maintenance.

Worn bushings or sleeves can lead to:

• loose suspension movement
• uneven tire wear
• poor trailer tracking

Replacing worn components helps restore proper function and keeps the suspension system operating as intended.

Fitment Reminder

This kit is designed for trailers using 9/16" suspension bolts, typically found on systems rated above 2300 lb capacity.

Smaller trailers using 1/2" hardware require different components and should not use this kit without modification.

Real-World Use

At 411-Trailers Group, we work with these suspension systems daily on active trailers in our yard.

Through our EZ Loader trailer sales and service platform at EZLoaderTrailers411.com, we install, inspect, and maintain these components in real-world conditions.

We regularly see worn bushings and sleeves cause excessive movement and poor alignment. Replacing this kit restores proper pivot function and helps maintain predictable towing performance.