A direct-replacement leaf spring engineered for 3,500 lb trailer axles. The Lippert 679372 uses a 6-leaf pack with double-eye ends for secure shackle attachment and delivers consistent arch and load rating to keep your trailer tracking level and stable mile after mile.
When a leaf spring sags, cracks, or loses its arch, the result is uneven load distribution, accelerated tire wear, and poor towing stability. The Lippert 679372 restores factory-spec suspension geometry with a 6-leaf pack rated to 3,500 lbs -- a common axle rating found across a wide range of travel trailers, fifth wheels, and utility trailers.
With a 24.875 in. eye-to-eye measurement and a 1.75 in. loaded arch height, this spring matches the original fitment on many Jayco and Keystone RV platforms, as well as other trailers built around Lippert-sourced axle assemblies. The black finish resists corrosion in road-exposure conditions.
Multi-leaf stack provides progressive load support and durability under sustained highway and off-pavement loads up to 3,500 lbs.
Both ends feature rolled eyes for standard shackle and hanger pin attachment -- no custom hardware required for most factory trailer frames.
24.875 in. eye-to-eye and 26 in. loaded length match OEM specifications for common Lippert axle assemblies used by major RV manufacturers.
Listed as a direct replacement for Jayco part 0265969 and Keystone RV part 619835, simplifying sourcing for those brand owners.
A trailer leaf spring supports the axle and absorbs road shock between the axle tube and the frame. Each leaf is a flat steel strip; stacking multiple leaves increases load capacity and controls deflection. Over time, leaves can crack, lose arch height, or develop fatigue cracks at the eyes -- especially on trailers that are frequently loaded to capacity or towed on rough roads.
Signs it is time to replace a leaf spring include: visible cracks in any leaf, one corner of the trailer sitting noticeably lower than the other, clunking or slapping noises from the suspension, or a spring that has gone flat (zero or negative arch at rest).
Leaf spring replacement on a trailer axle is a straightforward job for a mechanically capable owner with basic hand tools, a floor jack, and jack stands. General steps include: