How To Find Correct Replacement Leaf Spring For Trailer With Single 3500lb Axle

Updated 03/11/2021 | Published 03/08/2021

Question:

I need to replace leaf springs on my 7x14 cargo trailer with single libbert axle 3500# lci35-di-95-78-nosp-us-l-545-7242. Can you please recommend a suitable part, possibly upgrade spring. Thank you.

asked by: Rodney P

Expert Reply:

I would be happy to help you determine the correct replacement leaf springs for your 7'x14' cargo trailer with a single 3500lb Lippert axle but I will need to know if your leaf springs are a slipper spring, or double eye leaf spring and the length of the spring.

For example the 3-Leaf Double-Eye Spring for 3,500-lb Trailer Axles # e59SR is a double eye leaf spring for a 3500lb axle that measures 23-1/8" from the center of the spring eye to center of the spring eye as shown in the included picture. When measuring leaf springs you want the wheels of the trailer off the ground as they stretch when weight is applied and will give you an inaccurate measurement.

An example of a slipper spring is the 4-Leaf Slipper Spring w/ Flat End for 3,700-lb Trailer Axles # SP-040275 which is rated for 3700lb axles and measures 30" from the center of spring eye to end of the spring as shown in the included diagram.

If you can provide this information I would be happy to recommend the correct leaf springs for your trailer.

expert reply by: Samuel C