Last updated: October 17, 2026
Camco leveling blocks are still worth buying in 2026 for most van owners — they remain the cheapest reliable way to level a van, and the FasTen interlocking design stacks more stably than generic blocks — but they’re not the right pick if you regularly park on severe slopes or want a single-tool solution, where a curved ramp-style leveler does the job faster.
Camco Leveling Blocks: The Two Versions That Matter
Camco sells two block systems that get confused with each other constantly, so it’s worth being precise before you buy:
Camco FasTen RV Leveling Blocks - 8.5” x 8.5” x 1”- 10-Pk - Made in the USA | Features Interlocking Design for Customizable Height & Extreme Stability - Includes Carrying Handle for RV Storage (21022)
Included for 'Camco Leveling Blocks Review: Are They Still Worth Buying?' because the listing specifies 8.5” x 8.5” x 1”- 10-Pk and Made in the USA, details this guide uses to compare options.
View on Amazon
Camco RV Leveling Blocks - Features Interlocking Nested Design & Storage Bag for RV Storage and Organization - Each Leveling Block Measures 8.5" x 8.5" x 1" - 10-Pack, Design May Vary (44510)
Included for 'Camco Leveling Blocks Review: Are They Still Worth Buying?' because the listing specifies Each Leveling Block Measures 8.5" x 8.5" x 1" and 10-Pack, details this guide uses to compare options.
View on Amazon
Camco Fasten RV Leveling Blocks - 17” x 8.5” x 1”- 10-Pk - Made in the USA | Features Interlocking Design for Customizable Height & Extreme Stability - Includes Carrying Handle for RV Storage, (21025)
Included for 'Camco Leveling Blocks Review: Are They Still Worth Buying?' because the listing specifies 17” x 8.5” x 1”- 10-Pk and Made in the USA, details this guide uses to compare options.
View on Amazon
RVMATE 12 Pack RV Leveling Blocks, Camper Trailer Leveling Blocks | Levelers for RVs, Reduce Trailer Movement, Trailer Leveling Blocks，RV Leveling System Great for Single and Dual Wheels
Included for 'Camco Leveling Blocks Review: Are They Still Worth Buying?' because the listing specifies Camper Trailer Leveling Blocks and Levelers for RVs, details this guide uses to compare options.
View on AmazonCamco FasTen RV Leveling Blocks - 8.5” x 8.5” x 1”- 10-Pk - Made in the USA | Features Interlocking Design for Customizable Height & Extreme Stability - Includes Carrying Handle for RV Storage (21022)
Included for 'Camco Leveling Blocks Review: Are They Still Worth Buying?' because the listing specifies 8.5” x 8.5” x 1”- 10-Pk and Made in the USA, details this guide uses to compare options.
View on Amazon
Camco Fasten RV Leveling Big Blocks - Holds Up to 8,000lbs – Made in USA
Included for 'Camco Leveling Blocks Review: Are They Still Worth Buying?' because the listing specifies Holds Up to 8 and 000lbs, details this guide uses to compare options.
View on Amazon
Camco Fasten RV XL Leveling Blocks - 10.5” x 10.5” x 1”- 10-Pk - Made in the USA
Included for 'Camco Leveling Blocks Review: Are They Still Worth Buying?' because the listing specifies 10.5” x 10.5” x 1”- 10-Pk and Made in the USA, details this guide uses to compare options.
View on AmazonCamco RV Leveling Blocks - Features Interlocking Nested Design & Storage Bag for RV Storage and Organization - Each Leveling Block Measures 8.5" x 8.5" x 1" - 10-Pack, Design May Vary (44510)
Included for 'Camco Leveling Blocks Review: Are They Still Worth Buying?' because the listing specifies Each Leveling Block Measures 8.5" x 8.5" x 1" and 10-Pack, details this guide uses to compare options.
View on AmazonRVMATE 12 Pack RV Leveling Blocks, Camper Trailer Leveling Blocks | Levelers for RVs, Reduce Trailer Movement, Trailer Leveling Blocks，RV Leveling System Great for Single and Dual Wheels
Included for 'Camco Leveling Blocks Review: Are They Still Worth Buying?' because the listing specifies Camper Trailer Leveling Blocks and Levelers for RVs, details this guide uses to compare options.
View on Amazon- Camco FasTen Leveling Blocks — the current mainstream version. Yellow or brown blocks with an integrated T-handle carrying system, sold in packs of 4 or 10. The blocks interlock on all four sides, which is what makes stacked pyramids noticeably more stable than loose-stack generics.
- Camco Heavy Duty Leveling Blocks — an older, thicker-profile design (often listed as the 44505-style block) aimed at heavier RVs. Slightly larger footprint per block, slightly fewer blocks needed per stack, but bulkier to store and usually sold in smaller packs.
For most vans — Sprinters, Transits, Promasters, even loaded 4×4 builds — the standard FasTen 10-pack hits the sweet spot of capacity, stackability, and storage footprint. The Heavy Duty version only earns its extra bulk if you’re pushing 10,000+ lbs gross weight or parking dualies on soft ground.
Spec Comparison
See also: How Many Watts of Solar Do You Need for Van Life? • Truma vs Webasto Water Heaters for Vans: Combi, Aquago and Alternatives
| Camco FasTen (10-pack) | Camco Heavy Duty | Generic stackable blocks | |
|---|---|---|---|
| Block dimensions | 8.5″ × 8.5″ × 1″ | ~8.5″ × 8.5″ × 1.5″ | Varies, often smaller (7.5–8″) |
| Lift per layer | ~1″ | ~1.5″ | ~1″ |
| Rated capacity per block | Up to ~4,000 lbs (distributed) | Rated for heavier RV axles | Often unlisted or ~2,000 lbs |
| Interlock design | 4-sided grid interlock | Top/bottom interlock | Basic or none |
| Storage | Blocks thread onto T-handle carrier | Bulkier; no integrated carrier in some packs | Bags or loose |
| Material | UV-stabilized resin | UV-stabilized resin | Resin, quality varies |
| Typical price | $30–45 for a 10-pack | $25–40 depending on pack size | $15–30 |
The number that matters most in that table is the per-block footprint. At 8.5 × 8.5 inches, a FasTen block is wide enough that a typical van tire (235–265mm wide) sits fully supported without overhanging edges — a common failure point with smaller generic blocks, where tires creep toward the edge and crack the sidewalls of the block over time.
How Many Blocks Does It Actually Take to Level a Van?
This is the question product listings never answer, and it’s why so many people buy one pack and end up ordering a second. The math on real uneven campsites:
Rule of thumb: each layer of blocks gives you about 1 inch of lift under one tire. On a typical campsite that’s off by 2–3 inches on one corner — which is genuinely common — you’re building a pyramid of roughly 10–15 blocks under one wheel: a base of 3×2 or 3×3 blocks, then fewer blocks per layer going up so the tire climbs a ramp rather than a cliff.
Worked example: your passenger rear sits 2.5 inches low on a forest site. A stable pyramid looks like 6 blocks on the base layer, 4 on the second, 2 on top — 12 blocks total for one corner. That’s more than a single 10-pack. If you also need to nudge the opposite front corner up an inch, you’re at 15–16 blocks. This is why experienced van lifers carry 20 blocks, or supplement a 10-pack with a ramp-style leveler for the big corrections.
For side-to-side leveling (the more common scenario for sleeping comfort), you typically only need to raise two tires on one side, not a single corner — but each still needs its own pyramid if the correction is over an inch.
Stacking Stability: What the Interlock Actually Does
The FasTen blocks earn their price premium over generics in one specific place: lateral stability at height. The 4-sided grid interlock means blocks can’t slide horizontally relative to each other when a 3,000-lb tire load shifts as you drive up. Loose-stack blocks tend to skate apart on the second or third layer, especially on gravel.
Two caveats the interlock doesn’t fix:
- Pyramids still want to be wide-based. Never stack blocks as a vertical column. The footprint should be at least 1.5× wider than the stack is tall.
- Soft ground defeats interlocks. On sand or wet grass, a base layer can sink unevenly. Put the widest, flattest arrangement you can on the bottom, or put a scrap of plywood underneath.
The integrated T-handle carrier is a small thing that ends up mattering daily: blocks stay threaded together in storage instead of rattling loose in a bin, and you can carry the whole stack to the wheel in one trip.
Ownership Realities: What Wears and What to Watch
- Corner cracking is the failure mode. Blocks almost always crack at the top surface corners first, usually from a tire landing on a block edge rather than the full face, or from skipping the pyramid and stacking too steeply.
- UV degradation is slow but real. Blocks left permanently mounted outside a rig get brittle in 3–5 years of sun. Stored in a bin or under the van, they last far longer.
- Dirt in the interlock makes blocks reluctant to separate after a muddy weekend. A quick hose-down or a stiff brush keeps them snapping together cleanly.
- Common mistake: driving onto a tall stack too fast and kicking the pyramid apart, or worse, splitting a block. Creep up slowly and have a spotter if the stack is over two layers.
Which Should You Buy? A Quick Decision Matrix
| Your situation | Best pick |
|---|---|
| Weekend van, mostly flat campgrounds | FasTen 10-pack — enough for 1–2″ corrections |
| Full-time van lifer, dispersed/forest sites | FasTen 10-pack + a second pack or ramp-style leveler |
| Heavy build or dually axle (10,000+ lbs) | Heavy Duty version, two packs |
| Tight storage, want one compact tool | Ramp-style leveler instead; blocks as backup |
| Strictest budget | Generic stackables work for 1-layer corrections — just keep stacks low |
The Verdict
For a camco leveling blocks review in 2026, the conclusion is simple: the FasTen 10-pack remains the default recommendation because nothing else at this price range combines a proven interlock, a real carrying system, and a footprint sized correctly for van tires. The honest limitation is quantity, not quality — one pack handles mild corrections, but plan on two packs (or blocks plus a ramp) if you camp off-grid where sites are genuinely uneven. The Heavy Duty version is a niche upgrade for heavy axles, not a general improvement. Buy the FasTen, carry more blocks than you think you need, and stack wide — that’s the whole game.
