SEHNSUCHT Trailer Leaf Spring 6-Leaf 3500lb - Heavy Duty Replacement

In this review the SEHNSUCHT Trailer Leaf Spring is evaluated as a direct replacement option for trailers using a standard 7000lb axle. The bottom line: this 6-leaf assembly offers a clear fit-for-purpose design with each spring rated at 3500lb capacity, making it a sensible swap when matching original SW6-style springs is required. The reviewer found its heavy carbon steel construction and anti-rust coating useful for longevity, while noting mixed user reports on hardware quality and early breakage that buyers should consider.

Key Features

• 3500lb capacity per spring: Each leaf spring is rated to support one side of a 7000lb trailer axle, providing load capacity needed for heavier trailers.
• Exact dimensions: The 25-1/4 in eye-to-eye length and 3 in free open height make it compatible with applications specifying those dimensions.
• Six-leaf pack: The 6-leaf design gives additional stiffness and transmission stability compared with lighter packs, helping control axle movement under load.
• Heavy duty carbon steel: The construction improves shock transmission stability and friction damping for a firmer, more consistent ride.
• Anti-rust coating: Added corrosion resistance helps the spring last longer in wet or salty environments when maintained properly.
• Direct replacement for SW6: Intended to match original SW6 specifications so fitment and alignment are straightforward for compatible trailers.

Who It's For

The SEHNSUCHT 6-leaf 3500lb spring is for trailer owners seeking a direct replacement for worn or damaged springs on trailers with a standard 7000lb axle and SW6-compatible mounts. It suits utility trailers, campers and small commercial trailers where matching the original eye-to-eye length and bushing size matters.

It is less appropriate for someone who needs a custom ride height or who prefers progressive-rate springs for variable loads. Buyers concerned about reported hardware issues should plan to inspect shackles, bolts and bushings and consider replacing worn mounting hardware during installation.

Pros & Cons

Pros

• Good load rating per spring, making it suitable for 7000lb axle setups.
• Sturdy carbon steel construction with anti-rust coating improves durability in many conditions.
• Measures match typical SW6 replacements, simplifying fitment for compatible trailers.
• Six-leaf pack provides stronger support and stability under consistent loads.

Cons

• Some customers report mixed hardware quality and occasional early breakage, so inspect and consider upgrading mounting hardware.
• Not ideal for applications needing adjustable or progressive spring rates.

Specifications

Capacity per spring	3500lb
Suit for axle	Standard 7000lb trailer axle
Eye-to-eye length	25-1/4 in
Free open	3 in
Leaf width	1-3/4 in
Number of leaves	6
Bushing diameter	9/16 in

Our Verdict

The SEHNSUCHT 6-leaf 3500lb trailer spring is a practical, cost-effective replacement for SW6-compatible trailers that need the original dimensions and solid load capacity. It offers heavy duty construction and corrosion protection that make it good value for routine trailer repairs, though buyers should check mounting hardware and be mindful of mixed user feedback on durability in a few cases.

Frequently Asked Questions

Will this spring fit my 7000lb axle trailer?
It is designed for standard 7000lb trailer axles and will fit where the SW6 style and the 25-1/4 in eye-to-eye dimension are specified.

What material and coating are used?
The spring is made of heavy duty carbon steel with an extra anti-rust coating to resist corrosion and extend service life.

Should I replace hardware when installing?
Given mixed reports on hardware quality, it is wise to inspect shackles, bolts and bushings and replace worn parts during installation for best results.