The best RV tongue jack block depends on the support height, footprint, quantity, and capacity you need. OX BLOX is a strong choice when its stated 10,000-pound-per-block rating and multi-jack design fit your needs; ROBLOCK and HOXWELL offer taller, stackable options; and VEVOR has choices for buyers who want a four-pack or a single six-inch block. Compare each product’s stated rating with your jack, trailer, and setup before use.
| Product | Best For | Listed Capacity |
|---|---|---|
| OX BLOX Heavy Duty | Higher stated per-block capacity | 10,000 lb per block |
| ROBLOCK 6-Inch | Stackable support with carry bag | 40,000 lb GVW claim |
| HOXWELL 8-Inch | Extra height and portability | 40,000 lb GVW claim |
| VEVOR 4-Pack | Multiple support points | 6,000 lb per block |
| VEVOR 6-Inch Block | Single taller support block | 6,000 lb per block |
OX BLOX Heavy Duty Trailer Jack Block
Best for: RV owners who want a jack block with a clearly stated 10,000-pound capacity per block. The manufacturer says it supports tongue, post, foot, scissor, and stabilizer jacks, including round and square styles.
Its design is described as stable on gravel, grass, dirt, and pavement. The blocks can also be stacked to add height, and the listed capacity remains 10,000 pounds when stacked. That makes this option suitable for buyers seeking one block type for several trailer support uses.
Why it was selected: The stated per-block rating and broad jack compatibility make it straightforward to compare with products whose capacity is expressed differently. Limitation: It is a single block, so buyers needing several support points may need additional blocks. Confirm the setup is appropriate for the load before stacking.
ROBLOCK 6-Inch Trailer Jack Block
Best for: Campers who want a six-inch-high, stackable block and a storage bag. ROBLOCK describes its material as high-performance polymer with anti-UV additives, intended to resist dirt, grime, and oil.
The product is listed as compatible with tongue jacks, wheel jacks, round fifth-wheel hydraulic jack feet, and scissor stabilizers. Its adjustable stackable design lets users add height for uneven ground. The listing states a 40,000-pound gross vehicle weight (GVW) figure per block, which is not expressed in the same way as a per-block load rating.
Why it was selected: It combines a stated six-inch height, broad jack-foot use, and included bag. Limitation: The capacity wording is a GVW claim, so do not directly compare it with products rated in pounds per block; check the manufacturer’s load guidance for your application.
HOXWELL 8-Inch RV Jack Block
Best for: RV owners who need a taller block and want a handle for carrying. HOXWELL lists an eight-inch height, stackable construction, and a 40,000-pound GVW figure. It says the block fits most tongue jacks, posts, feet, and stabilizers.
A built-in weep hole is intended to drain water and limit debris buildup inside. The blocks nest together for storage, and the manufacturer notes that they can also serve as an outdoor seat. These details may suit buyers who value portability and campsite utility alongside support height.
Why it was selected: Its taller profile distinguishes it from the six-inch options, while the handle and nesting design address handling and storage. Limitation: The capacity is presented as a GVW claim rather than a per-block rating. Verify load instructions and required clearance before choosing it for a particular trailer.
VEVOR Trailer Jack Block Four-Pack
Best for: Buyers who want four blocks for multiple support locations or a ready supply for a trailer setup. VEVOR lists a capacity of 6,000 pounds per block and describes an increased footprint for added stability.
The blocks can be positioned without complex installation and stacked to adjust height. The product is made from polypropylene, according to its listing. A four-pack may be more practical than purchasing individual blocks when a buyer needs several matching supports.
Why it was selected: It is the only listed multi-block package and gives a stated per-block capacity for comparison. Limitation: The supplied features do not state block height or detailed jack-foot dimensions. Check the product dimensions and confirm the footprint suits your jack before buying.
VEVOR 6-Inch Heavy Duty Jack Block
Best for: Buyers seeking one six-inch support block with a stated 6,000-pound capacity. VEVOR says its cylindrical design increases the support area and suits round or square metal jack legs, support wheels, and insertable legs.
The block is made from polypropylene and described as non-slip on surfaces such as snow, grass, sand, and gravel. Its taller shape is intended to support a jack on uneven or soft ground, including dips and rough areas.
Why it was selected: The six-inch height, broad stated fit, and per-block capacity make it a useful single-block alternative to the four-pack. Limitation: The listed capacity is 6,000 pounds per block; buyers needing multiple supports should calculate their block quantity and check placement requirements.
Buying Guide: How To Choose An RV Tongue Jack Block
What capacity should you compare?
First, check whether a listing gives a per-block load rating or a vehicle gross weight figure. Those descriptions are not interchangeable. Compare the product’s instructions with the actual load placed on each block, and do not assume that stacking increases capacity unless the manufacturer explicitly says so.
How much height and how many blocks do you need?
Choose a block height that gives the jack the required support without forcing an unstable setup. A six-inch or eight-inch product may provide more height than a lower-profile block. Consider whether you need one support point or several, and whether the product is sold individually or as a pack. Stack only as directed by the manufacturer.
Will the block fit your jack and storage space?
Check compatibility with the jack foot shape and dimensions, especially if the foot is unusually wide, narrow, or shaped. A handle, nesting design, or included bag can make transport and storage easier. For soft or uneven ground, compare the listed footprint and surface guidance rather than relying on height alone.
Frequently Asked Questions
What does an RV tongue jack block do?
It creates a support surface beneath a trailer tongue jack. Depending on the product, it can also add height or spread the jack’s load over a wider footprint.
Can I stack trailer jack blocks?
Some listed products are stackable. Follow the manufacturer’s stacking and load instructions, and use a stable, level arrangement.
Are tongue jack blocks and stabilizer pads interchangeable?
Some products are designed for both tongue jacks and stabilizers, but not all blocks fit every jack. Check the listed compatibility and dimensions before use.
Does a 40,000-pound GVW claim mean each block supports 40,000 pounds?
Not necessarily. GVW and a per-block load rating are different descriptions. Confirm the manufacturer’s instructions instead of treating them as equivalent.
Should I choose one block or a multi-pack?
Choose based on the number of support locations in your setup. A single block may suit one jack, while a multi-pack can provide several matching blocks; follow the trailer and product instructions for placement.