SEHNSUCHT Trailer Leaf Spring 4-Leaf 1750lb Capacity - Direct Fit

In this review of the SEHNSUCHT Trailer Leaf Spring set, the bottom line is simple: these are practical replacement springs for trailers that need to restore load capacity and ride stability. Intended for owners replacing worn or damaged springs on standard 3000lb trailer axles, the pair delivers the key mechanical dimensions and a heavy duty carbon steel construction. The review finds them most valuable for customers who need a direct fit for SW4B-style axles and who prioritize load rating and corrosion-resistant coating over premium aftermarket refinements.

Key Features

• Capacity: Each spring is rated at 1750 lb so the pair suits a standard 3000 lb trailer axle and restores rated carrying capacity.
• Exact dimensions: A 25-1/4 in eye-to-eye length with a 3 in free open and 1-3/4 in leaf width helps ensure predictable fit and geometry on matching trailers.
• Four-leaf design: The 4-leaf stack with 5/16 in leaf thickness aims to balance load support and some flex for towing stability.
• Bushings installed: Two 9/16 in bushings are preinstalled per spring, which speeds installation and reduces the need to source hardware separately.
• Material and finish: Heavy duty carbon steel construction with an anti-rust coating improves durability and helps resist corrosion in typical trailer environments.

Who It's For

This product suits trailer owners and DIY mechanics who need a cost-effective, direct-replacement leaf spring for trailers that use SW4B-style components, including many small travel trailers and utility trailers. If you need to return a trailer to its original ride height and load rating without modifying hangers or shackles, these springs are a practical choice.

Those who should look elsewhere include buyers seeking premium performance tuning, advanced multi-leaf architectures, or springs validated by extensive long-term field testing. Reports of mixed quality and occasional early failure suggest commercial fleets or heavy daily users may prefer springs with a proven heavy-duty warranty program.

Pros & Cons

Pros

• Good value: the springs offer the rated 1750 lb capacity per spring at a lower price than many branded alternatives.
• Direct-replacement sizing: the 25-1/4 in length and 3 in free open make fitment straightforward for matching trailers.
• Installed bushings and anti-rust coating reduce immediate prep time and resist corrosion.

Cons

• Mixed quality reports: some customers reported breakage or early failure, so long-term durability can be inconsistent.
• Not for heavy commercial use: buyers with intensive daily towing or extreme loads may prefer heavy-duty OEM or upgraded springs.

Specifications

Capacity (per spring)	1750 lb
Suitable axle	Standard 3000 lb trailer axle
Eye-to-eye length	25-1/4 in
Free open	3 in
Leaf count & thickness	4 leaves, 5/16 in thickness
Leaf width	1-3/4 in
Bushing diameter	9/16 in (2 bushings installed per spring)

Our Verdict

The SEHNSUCHT 4-leaf 1750 lb trailer springs are a sensible, budget-conscious replacement for trailers that require a direct SW4B-style fit and a return to rated axle capacity. They provide expected dimensions, preinstalled bushings, and a corrosion-resistant finish, making them good value for most owner/operators, but buyers with heavy commercial demands should consider more heavily validated alternatives.

Frequently Asked Questions

Will these springs fit my 3000 lb axle trailer?
They are designed for standard 3000 lb trailer axles and have a 25-1/4 in eye-to-eye length, but confirm hanger spacing and shackle length before purchase.

Are bushings included?
Yes, two 9/16 in bushings are installed in each spring so installation can be quicker and requires less additional hardware.

How durable are these springs?
Construction uses heavy duty carbon steel with an anti-rust coating, but some users have reported mixed long-term durability, so they are best for typical owner use rather than extreme commercial cycles.