A genuine Lippert replacement leaf spring built to restore your trailer suspension to factory performance. This 7-leaf double-eye spring handles a 4,000-lb axle load rating and matches the original OEM dimensions, so it drops in without modification on compatible Lippert-equipped trailers and axles.
Leaf springs are a wear item. Over time, springs fatigue, flatten, crack, or shed leaves -- and when they do, your trailer rides lower on one side, tires wear unevenly, and your axle rating is no longer being met. This Lippert 2021095282 spring is the correct OEM-spec replacement for trailers and axles that originally used this part, giving you a clean, known-good starting point rather than a generic approximation.
At 4,000 lbs of capacity across 7 progressive leaves, this spring is designed for single- or tandem-axle travel trailers, fifth wheels, and utility trailers in the mid-duty range. The double-eye ends mount directly to standard trailer hangers and equalizers using common 9/16" or 5/8" center bolts (hardware sold separately).
Rated to handle full axle loads up to 4,000 lbs, matching the capacity of Lippert OEM axle assemblies in this range.
Seven progressively tapered steel leaves distribute load stress evenly and resist the fatigue cracking that plagues thin 5-leaf designs.
Both ends feature rolled eyes for standard hanger and equalizer mounting -- no fabrication or adapters required on compatible trailers.
1-3/4" spring width, 24-7/8" unloaded eye-to-eye, and 26" load length match factory Lippert axle specifications precisely.
Part number 2021095282 (vendor part 06-7999) is a genuine Lippert component. When you order by this number, you get the correct spring -- not a "compatible" aftermarket substitute. This matters when your trailer is still under a manufacturer warranty or when you need a documented OEM repair for a dealer inspection.
Leaf springs fail gradually, and the warning signs are easy to miss until the problem becomes serious. Common failure modes on RV trailers include:
Replacing a spring as soon as sag or cracking is noticed -- rather than waiting for a full failure -- prevents collateral damage to axle hangers, equalizers, and U-bolts.
This is a straightforward suspension swap for anyone comfortable working under a trailer. You will need:
This listing is for the leaf spring assembly only. U-bolts, center bolts, spring clips, hanger bolts, and equalizer hardware are sold separately. When replacing a spring, inspect all mounting hardware and replace anything that shows rust, thread damage, or deformation. Reusing compromised U-bolts is one of the most common causes of repeat suspension failures on trailers.
This spring is rated at 4,000 lbs per axle. If your trailer has a 3,500-lb axle, do not substitute a higher-rated spring -- the stiffer spring will increase ride harshness and may not compress correctly in your hanger geometry. Confirm your axle's rating (stamped on the axle tube or listed on the VIN/compliance label) before ordering. On tandem-axle trailers, both springs on an axle should be replaced as a matched pair when one is worn.