Heavy-Duty Trailer Axle Suspension Kit for 3500lb Capacity

LIBRA offers high-quality trailer parts designed to meet the demands of the US OEM trailer industry. With over 16 years of experience, LIBRA is a trusted supplier known for reliability and superior craftsmanship, serving major trailer and trailer axle manufacturers.

Each spring in our product line is engineered for robust performance, boasting a capacity of 1,750 pounds per spring, ideal for standard 3,500-pound trailer axles. The Eye to Eye length measures 25-1/4 inches, ensuring a secure fit, while the Free Open dimension provides ample space at 3 inches. The leaf width is 1-3/4 inches, crafted with 4 leaves and equipped with 9/16-inch diameter nylon bushings for smooth operation.

This spring model effectively replaces various equivalents such as SW4B, 72-42, LIB-401-DE, UNA212, PR4B, 124903, 9150014, and 93184, albeit under different SKU numbers.

To complete your trailer axle setup, we include a comprehensive 3,500-pound axle U-bolt kit tailored for 2-3/8-inch diameter round trailer axles. This kit comprises 4 U-bolts, each 5-1/2 inches long with a 1/2-inch diameter, along with 2 tie plates specifically designed for 1-3/4-inch leaf springs, and 8 1/2"-20 hex nuts for secure fastening.

Additionally, our offering extends to a Complete Single Trailer Axle Hanger Kit designed for 1-3/4-inch leaf springs. This kit includes 2 hangers measuring 3 inches tall and 2 hangers at 2.1 inches tall, ensuring versatile installation options. It further incorporates 4 shackle straps with an eye-to-eye length of 3.09 inches, along with 6 shackle bolts sized at 9/16"-18 x 3 inches, complete with locknuts for added security.

For OEMs and manufacturers seeking dependable trailer components, LIBRA remains a preferred choice, delivering products that meet rigorous industry standards and uphold our commitment to durability and performance.

Whether you are assembling new trailers or maintaining existing fleets, LIBRA's parts are engineered to enhance efficiency and reliability, backed by our extensive industry experience and dedication to quality assurance.

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