6 Step Rail Support Struts For High Traffic Camper Vans

Stepping into a high-traffic camper van day after day puts an incredible amount of stress on the entry stairs. When those steps begin to sag, rattle, or struggle to lift under their own weight, the underlying gas struts have likely reached the end of their service life. Replacing these components is a non-negotiable aspect of maintaining a safe, reliable mobile dwelling.

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Kwikee 905309000: Best OEM Replacement

For owners of rigs equipped with factory Kwikee steps, the 905309000 strut is the gold standard for restoring original performance. It is engineered specifically to match the force requirements and mounting geometry of standard power steps, ensuring that the deployment and retraction cycles remain smooth. Consistency is the primary benefit here, as this part eliminates the guesswork often associated with aftermarket components.

Choosing the OEM route is highly recommended for those who prioritize seamless integration and system longevity. While other options might offer higher pressure ratings or alternative materials, this strut is calibrated exactly for the intended load of the Kwikee assembly. It is the most reliable choice for users who want to return their steps to factory-fresh operation without needing to modify existing brackets or hardware.

Lippert #363691: For Heavy-Duty Steps

High-traffic use or the addition of aftermarket step covers can increase the load on a motor, causing standard struts to struggle. The Lippert #363691 is designed specifically for these heavier, more demanding applications. Its robust internal seals and high-pressure nitrogen charge are built to handle the extra weight of solid-step attachments or frequently used entry points.

This is the definitive choice for full-time van dwellers who subject their steps to dozens of cycles daily. If the current struts fail to hold the steps in place or cause the motor to labor audibly, switching to this heavy-duty variant is the logical step up. Investing in this model provides peace of mind that the mechanism can handle the rigors of heavy, long-term habitation.

AP Products 013-421: Top Budget-Friendly Pick

Not every repair needs to break the bank, especially when dealing with consumable mechanical parts. The AP Products 013-421 offers a reliable, no-frills solution that fits a wide range of common entry step configurations. It provides consistent, adequate pressure for standard-use setups where the primary goal is restoring functionality at an approachable price point.

This strut is an excellent candidate for the weekend traveler or the budget-conscious renovator. While it may not possess the specialized heavy-duty internal architecture of premium models, it excels in standard environments. For those managing a strict build budget, this part delivers the necessary performance without unnecessary cost premiums.

Tuff Support 613393: Best Aftermarket Option

The Tuff Support 613393 stands out for those who find that factory performance was never quite enough. Engineered to meet or exceed original equipment standards, these struts often feature slightly improved dampening characteristics that quiet the operation of folding stairs. They are a frequent choice for those looking to upgrade their hardware beyond the base-level factory inclusions.

Choosing this brand is a balanced decision for the pragmatic builder. The quality control remains high, and the installation process is typically identical to the stock part it replaces. It is a solid middle-ground option for owners who want a performance boost over the entry-level budget brands but do not need the extreme heavy-duty capacity of the top-tier specialty struts.

Suspa C16-08054: The Universal Fit Favorite

In the world of DIY van conversions and custom builds, finding an exact match can sometimes be impossible due to modifications. The Suspa C16-08054 is a favorite among the custom community for its standardized dimensions and reliable output. Its ubiquity makes it an incredibly easy component to replace, as it is readily available at most supply shops and automotive retailers.

This strut is a triumph of utility, though it requires the builder to verify their specific force requirements before purchasing. Because it lacks the custom-tailored feel of an OEM-specific part, it serves as a workhorse for those who are confident in measuring and verifying their step’s lifting weight. For the tinkerer who prioritizes availability and modularity, this is the go-to selection.

Stromberg Carlson EHS-STRUT: For Hybrid Steps

Hybrid or manually deployed steps with an assist feature require a specific type of support that standard power-step struts may not provide. The Stromberg Carlson EHS-STRUT is tailored for these systems, ensuring the necessary tension to assist with manual lifting while providing enough resistance to keep the steps firmly in place when extended.

This specific engineering prevents the “springy” feeling that often occurs when a strut is misaligned with the step’s weight. If the current setup is an assist-style configuration, forcing a standard gas strut into place will result in poor performance and potential hardware damage. This model is the only logical choice for users with hybrid hardware who value ease of operation.

How to Know When Your Step Strut is Failing

The most obvious sign of failure is a sluggish deployment or a step that no longer stays fully extended under its own weight. If the steps shake or droop while walking on them, the gas charge inside the cylinder has likely leaked out. Listen closely during the operation; a grinding or clicking sound often suggests that the motor is fighting against a dead strut.

Beyond physical performance, inspect the shaft of the strut for signs of oil leakage. A thin film of residue is normal, but heavy weeping indicates that the internal seals are blown. If the steps fail to hold their position in high winds or remain saggy even after a quick cleaning, it is time to plan for a replacement.

Matching a Strut: Sizing and Pressure Rating

A strut is defined by its extended length, compressed length, and the force rating measured in pounds or Newtons. Replacing a strut with one that has the wrong pressure rating will either prevent the steps from closing properly or cause them to slam open with excessive force. Always refer to the part number stamped on the original strut body to ensure the replacement is a match.

If the original part number is unreadable, you must measure the center-to-center distance between the mounting points while the step is fully extended. Match this length as closely as possible to the replacement specifications. When in doubt, lean toward the pressure rating suggested by the manufacturer, as upgrading force blindly can damage the mounting brackets.

Safe Installation: A Step-by-Step Guide

Safety begins with ensuring the steps are fully supported before removing any hardware. Use a jack stand or a sturdy block of wood to hold the steps in the desired position, as the strut is a significant component of the load-bearing assembly. If the step drops suddenly, it can pinch fingers or damage the motor linkage.

Begin by removing the retaining clips from the mounting studs on both ends of the strut. A flat-head screwdriver can usually pry these clips open to allow the strut to slide off the bracket. Once the new strut is in place, apply a light coating of silicone lubricant to the mounting studs to prevent corrosion, then snap the retaining clips firmly back into their locked position.

Step Strut Maintenance and Longevity Tips

Environmental exposure is the primary enemy of entry struts, especially in coastal areas or regions that use road salt. Regularly wipe the exposed metal shaft clean with a soft cloth to remove grit and dirt that can scratch the delicate seals. Keeping this area clean prevents premature seal failure and keeps the operation smooth.

Consider applying a high-quality dry lubricant or a specialized silicone spray to the pivot points and the strut shaft once every few months. Avoid thick greases that attract dust and debris, as these can turn into an abrasive paste over time. A proactive maintenance schedule of cleaning and light lubrication can easily double the service life of a set of struts.

Maintaining these entry points ensures the safety and longevity of your mobile living space, preventing minor mechanical irritations from turning into major failures. With the right strut choice and a bit of routine care, your steps will continue to provide smooth and reliable service for years to come.