Recommended Replacement 1-3/4 Inch Wide Leaf Springs for a Boat Trailer

Question:

Hi, I need to replace my leaf springs on my boat trailer. The information I have is: 1. Trailer age ~ 10 years 2. GAWR/PNBE all axles 1755 lbs. 3. Slipper spring - flat end 4. Leaf length - best I can tell its about 25 1/2 though Ive yet to find any leaf spring that length anywhere. 5. Leaf width: 1 3/4 6. Number of leaves - 5 What parts would you recommend? Thanks!

asked by: Bob A

Expert Reply:

Thanks for the picture and all of the information! Those dimensions do not match up to a leaf spring we currently have but I do have a close option which I think will work. When leaf springs are measured for replacement we ask people to jack the trailer up, on one side, to take the weight off of the springs. Over the years the springs will stretch out and a 10 year old trailer could very likely have started out with a shorter leaf spring. Another way to accurately measure is to go from the center of each bolt hole on the spring mounts.

The closest I can get in a slipper spring is the 24-5/8" Long - 4-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer Axles item # SP-179275.

With your set up you can also use a double eyed spring which would give you more options. You will want to measure both the spring with weight off the trailer and the bolt hole to bolt hole length. If you go this route you will probably need one of the following:

25-1/4" Long - 5-Leaf Double-Eye Spring for 6,000-lb Trailer Axles item # e34SR

25-1/8" Long - 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles item # e54SR

24-7/8" Long - 6-Leaf Double-Eye Spring for 5,300-lb Trailer Axles item # e76SR

If you get a different measurement or have any additional questions, feel free to email me directly and I would be happy to help you.