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Setting up camp on uneven ground can quickly ruin an otherwise relaxing trip, especially when standard leveling blocks sink into soft mud or shift under heavy jack pressure. The Camco FasTen RV Leveling Base is designed to solve this exact problem by creating a wide, solid foundation for stabilizer jacks, tongue jacks, and stackable leveling pads. This review covers real-world performance, build durability, weight limits, and key compatibility details to help you decide if this accessory belongs in your setup.
Quick Verdict
Rating: 8.8/10 · Highly Recommended
Best For: RVers, travel trailer owners, and campers looking for heavy-duty footing under jacks on soft dirt, gravel, or unpaved campsites.
Bottom Line: Offers exceptional 8,000 lb weight support and excellent nesting portability, though its 12×12 footprint requires dedicated storage space in smaller camper bays.
| Specification | Detail |
|---|---|
| Brand | Camco |
| Model / Series | FasTen Leveling Base Blocks |
| Dimensions (Per Block) | 12 in x 12 in x 5 in |
| Weight Capacity | 8,000 lbs per block |
| Material | UV-Stabilized High-Impact Resin |
| Compatibility | Camco 2×2 FasTen blocks, standard square blocks, stabilizer jacks, tongue jacks |
| Portability Feature | Nested interlocking design with integrated carrying handle |
| Primary Use Case | High-gain base support for stabilizer jacks and leveling blocks |
What Is the Camco FasTen RV Leveling Base?
The Camco FasTen RV Leveling Base is a heavy-duty leveling accessory built specifically for travel trailers, fifth wheels, and motorhomes. Rather than relying on thin plastic pads that sink into soil, this base provides a rigid 12×12-inch footprint that distributes downward weight evenly across grass, sand, gravel, and asphalt.
Each block adds 5 inches of height gain, reducing how far you need to extend your corner stabilizer jacks or electric tongue jacks. Decreasing jack extension drastically improves stability inside the RV, reducing wobble and sway when people walk around inside.
Best For
- Campers frequently setting up on uneven dirt or grass
- RVers who want to reduce stabilizer jack extension to minimize sway
- Owners already using Camco FasTen or standard interlocking block systems
Skip If
- You only camp on perfectly level concrete RV pads
- Your storage bay lacks height clearance for 12×12-inch square bases
- You require curved drive-on wheel chocks rather than jack base pads
Design and Build Quality
Design and build matter when choosing leveling accessories, and the Camco Fasten RV Leveling High-Gain Base presents a utilitarian, purpose-driven solution. The exterior features a ribbed structural grid made from high-impact resin engineered to resist cracking under heavy point-loads and harsh weather conditions.
Pro Tip: Store these base blocks near your RV utility door or pass-through bay handle. The integrated carrying handle locks nested pieces together so you can grab both blocks in one easy trip.
Clean design aesthetics, functional nesting, and a carry handle aid transport. The blocks snap securely together when stacked top-to-bottom, preventing them from sliding around your cargo hold during transit. Measuring 12 x 12 x 5 inches each, these blocks support up to 8,000 lbs per block without crushing or bowing.
Performance and Compatibility
Having covered build and storage, attention turns to how the Camco Fasten RV Leveling High-Gain Base actually performs in the field and which setups it will work with.
Before You Buy: Always check your jack foot dimensions. While the 12×12-inch surface accepts almost all standard scissor jacks and round footpads, verify that custom aftermarket pads rest flat inside the top recess.
The base delivers reliable stability under uneven ground, supporting heavy tongue weights and jack loads without sinking into mud. It integrates seamlessly with 2×2 FasTen Leveling Blocks and accommodates standard square leveling blocks from other popular brands. You can use the bases standalone directly under steel jack feet or stack additional interlocking blocks on top to reach steep campsite angles.
How It Performs in Real Use
1. Soft Dirt and Grass Campsites
Standard metal jack feet tend to cut into damp soil, causing your RV to lean overnight. Placing this 12×12-inch base underneath creates a broad surface area that spreads out weight, keeping your camper completely level through heavy rain or shifting mud.
2. Steep Incline Leveling
When camping on severe slopes, extending scissor jacks to their maximum length causes severe frame shake. By placing these 5-inch high-gain base blocks underneath first, you preserve jack stroke length, maintaining structural rigidity and reducing interior vibration.
3. Asphalt Protection on Hot Days
Heavy RV jacks can easily sink into soft, sun-heated asphalt roads and campground pads, leaving costly damage behind. These resin bases cushion the contact point, protecting both your jack footings and the campsite pavement.
Pros and Cons
Pros
- Impressive 8,000 lb load capacity per block handles heavy trailers easily
- 5-inch height gain reduces jack extension for improved stability
- Smart nesting design snaps two pieces into a single compact unit
- UV-stabilized resin build resists cracking, rust, and rot
- Integrated carrying handle simplifies transport around the campsite
Cons
- 12×12-inch footprint requires more bay space than narrow stack pads
- Resin surface can collect loose gravel inside underside cavities if dragged
Is It Worth the Price?
The Camco FasTen RV Leveling Base represents a strong value for campers seeking dependable stability without investing in permanent automatic leveling hydraulic conversions. Considering its heavy-duty 8,000 lb rating and durable resin construction, it outperforms wooden blocks that rot, split, or retain moisture over time.
If you routinely travel off the beaten path or camp at unpaved state parks, the added stability and reduced frame wobble make this base a smart buy for everyday use.
How It Compares to Alternatives
Compared to standard thin Lego-style leveling blocks, the Camco FasTen Base provides instant 5-inch elevation gain in a single solid unit, eliminating the need to build multi-tier block pyramids under your jacks. If you want drive-on wheel leveling, curved leveling ramps like Andersen levelers are better suited for tires. However, for jack stand placement and tongue stabilization, Camco’s wide footprint and interlocking resin top provide far better stability.
Frequently Asked Questions
What is the weight rating of each Camco FasTen Leveling Base block?
Each individual block supports up to 8,000 lbs. This high capacity makes them suitable for travel trailers, fifth wheels, and heavy motorhome jacks without cracking under pressure.
Can I stack standard 2×2 leveling blocks on top of this base?
Yes. The top surface features interlocking grid patterns specifically designed to fit Camco 2×2 FasTen blocks as well as most common square leveling blocks from major brands.
How do these base blocks nest together for storage?
The bottom cavities of one block align with the top pegs of another. When pushed together, two blocks lock tightly into a single low-profile stack that can be carried using the integrated handle.
Are these blocks weather resistant for long-term outdoor exposure?
Yes, they are molded from UV-stabilized high-impact resin that resists degradation from prolonged sunlight, extreme cold, mud, and water contact without rotting or rusting.
Can I drive my RV tires directly onto these leveling bases?
No. These base blocks are intended specifically for stabilizer jacks, fifth-wheel landing gear, and tongue jacks. For tire elevation, drive-on leveling ramps or standard wide blocks should be used.
What are the exact dimensions of each block?
Each individual base block measures 12 inches long, 12 inches wide, and 5 inches high, providing a broad footprint and significant vertical gain.
The Bottom Line
The Camco FasTen RV Leveling Base is a practical, durable solution for any camper tired of wobbly jacks and sinking footings. If you want a quick 5-inch elevation gain with a massive 8,000 lb capacity and convenient nesting storage, this set is a reliable upgrade for your rig.
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