6 Air Tank Mounting Kits For Onboard Suspension Compressors

An onboard air system transforms a mobile dwelling, turning a simple compressor into a tool for airing up tires, cleaning dust from solar panels, or running pneumatic accessories. Without a secure mounting solution, however, that pressurized tank becomes a dangerous projectile in the tight confines of a van or truck. Choosing the right mounting hardware is the difference between a reliable utility system and a rattling, hazardous liability.

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VIAIR Universal Bracket Kit: Most Versatile

When modularity is the priority, the VIAIR Universal Bracket Kit stands out as the industry standard. It features a series of slotted steel straps that accommodate various tank diameters, making it the perfect choice for those whose build plans might shift during the mid-build process.

This kit is ideal for builders who prioritize adaptability over absolute rigidity. Because it does not rely on a single, permanent bolt pattern, it allows for fine-tuning the tank’s position to clear existing plumbing or electrical conduits.

If the goal is to avoid custom fabrication while still maintaining the freedom to relocate equipment, this is the definitive choice. It is rarely the most “heavy-duty” option, but for standard 2-to-5 gallon tanks, it performs flawlessly.

HornBlasters Spare Tire Delete: For Trucks

Truck-based builds often suffer from a lack of chassis space, making the spare tire well a prime target for system installation. The HornBlasters Spare Tire Delete kit leverages this otherwise wasted cavity to house the air tank, compressor, and manifold safely out of reach of road debris.

This solution is designed for the serious traveler who demands a clean undercarriage and maximum ground clearance. By utilizing a factory-style mounting point, the installation feels like a permanent, well-engineered upgrade rather than an aftermarket afterthought.

This kit is essential for anyone running an aggressive tire setup where under-frame real estate is non-existent. It is an investment in both space management and component longevity, provided the vehicle’s specific tire carrier footprint is compatible.

Up Down Air Saddle Mount: Frame Rail Mounting

The Up Down Air Saddle Mount is a masterclass in utilizing the structural members of a chassis. By clamping directly to the frame rail, it avoids the common pitfalls of drilling into structural steel, which can compromise the integrity of a vehicle’s frame.

This mount is meant for those who want their air tank tucked high and tight against the frame, protected by the vehicle’s profile. It is a favorite for off-road-capable expedition vehicles that require the tank to be shielded from rocks and trail obstacles.

Because it creates a rigid connection, it is best suited for tanks that are not subjected to constant, high-vibration exposure. For the builder who values a “tucked” look and clean lines, this is the most professional mounting method available.

Pacbrake HP10108 Mount: For Horizontal Tanks

If the air tank must be mounted horizontally under the vehicle, the Pacbrake HP10108 provides the necessary security to prevent fatigue-related failures. This bracket is engineered to distribute the weight of a full tank across a larger surface area, reducing the stress on the mounting points.

This is the go-to solution for heavy-duty setups where a large tank is prone to sagging or excessive oscillation. It creates a stable platform that keeps the tank parallel to the chassis, which is critical for consistent drainage of condensation.

Anyone running a large, heavy steel tank should prioritize this bracket. The peace of mind provided by its robust design outweighs the slight increase in weight compared to generic, flimsy alternatives.

Kleinn 6450-7 Mount: For 5-7 Gallon Tanks

For those with significant pneumatic demands—such as running heavy-duty air tools or large-volume tires—the Kleinn 6450-7 is the benchmark for larger tanks. These tanks generate significant momentum when a vehicle hits a bump, and this mount is built to withstand those higher shear forces.

The mounting footprint is wider and deeper than standard brackets, providing extra stability for the increased leverage of a 7-gallon cylinder. It is a specialized component, but one that is absolutely necessary for the scale of air systems found in larger RVs or utility vehicles.

This product is not for the minimalist builder using a small, 1-gallon reserve tank. It is an industrial-grade solution designed for those who require sustained performance and heavy-duty reliability.

Airlift Tank Bracket: For Clean Interior Builds

Not every air system belongs under the chassis; some are better suited for the protected environment of an interior storage compartment or a garage box. The Airlift tank bracket is designed for flat-surface mounting, making it simple to bolt into a plywood floor or a metal storage deck.

This is the best option for interior builds where noise reduction and protection from the elements are paramount. It allows for an exceptionally clean installation that makes maintenance and pressure gauge monitoring straightforward and accessible.

When using this bracket, ensure the mounting surface is reinforced. Even in an interior, a pressurized tank represents significant weight; anchoring into thin flooring without a backing plate is a common and dangerous mistake.

Mounting Locations: Frame vs. Cargo Space

Choosing between an exterior frame mount and an interior cargo installation involves a clear tradeoff between space and noise. Exterior mounts save precious internal square footage but expose components to salt, water, and road vibration, necessitating high-quality, corrosion-resistant hardware.

Interior mounts protect the equipment from the elements and facilitate easier access for routine maintenance and system adjustments. However, interior installations require careful planning for noise dampening, as the rhythmic pulse of a compressor can become intrusive in a small living space.

Evaluate the specific needs of the build before finalizing a location. If the system is strictly for airing up tires once a month, frame mounting is superior. If the system supports air suspension or frequent tool use, internal access is worth the loss of storage.

Safety Checks for Pressurized Tank Mounts

Mounting a pressurized vessel is a safety-critical task that demands more than just hand-tightening bolts. Every bracket should be inspected for signs of “work hardening,” where the vibration of the vehicle causes the metal to fatigue and eventually crack.

Always use Grade 8 or stainless steel hardware, and integrate locking nuts or thread-locking compound to ensure that vibrations do not back the bolts out over time. Periodically check the tank’s drain valve, as water buildup inside the tank can significantly increase its weight and shift the center of gravity, putting extra strain on the mounting brackets.

A loose air tank is an accident waiting to happen, especially during emergency maneuvers. Treat the mounting hardware with the same respect as the suspension components of the vehicle itself.

Vibration and Noise Dampening Techniques

Compressors and tanks create harmonic vibrations that can resonate throughout a metal-skinned van or trailer. To combat this, utilize rubber isolators or “silent blocks” between the bracket and the chassis, which serve as a buffer against high-frequency metal-on-metal chatter.

For interior installations, consider mounting the entire assembly on a piece of thick rubber matting or high-density foam. This prevents the transfer of vibrations directly into the floor or wall panels, effectively turning the structure into a soundboard.

Remember that any hose connected to the tank should have enough slack to allow for slight movement; a rigid hose can pull on a fitting and eventually cause a leak. Proper dampening is not just about comfort; it is about extending the lifespan of the fittings, hoses, and the compressor motor.

DIY vs. Bolt-On Kits: What’s Right for You?

Bolt-on kits are designed for specific vehicles and offer a “set it and forget it” reliability that is difficult to replicate with custom fabrication. They are recommended for most builders because they are engineered for the stresses of specific chassis designs, saving hours of trial and error.

Custom DIY solutions are only appropriate when standard kits cannot accommodate a unique frame modification or an unconventional vehicle layout. If the expertise for welding and fabrication is lacking, stick to reputable bolt-on kits to ensure the integrity of the installation.

Ultimately, the goal is a system that functions reliably for years without needing constant repairs. Choosing a proven, bolt-on mounting kit is the most cost-effective way to ensure that the pneumatic system remains a benefit to the build rather than a recurring source of stress.

The effectiveness of an onboard air system is defined as much by its installation as its components. By prioritizing robust mounting solutions and respecting the mechanical realities of vibration and weight, a reliable air system becomes one of the most functional upgrades in any mobile space.