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This item: OX BLOX Heavy Duty Trailer Jack Block - RV Leveling Blocks & Stabilizer Pads - 10,000 lbs Capacity - Made in USA from Recycled Plastic - for Tongue Jack, 5th Wheel, Camper & Travel Trailer
$49.99
Get it as soon as Thursday, Jun 11
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$38.13
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$20.82
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Product description
Strong
OX BLOX are the strongest trailer jack blocks on the market and are rated up to 10,000 lbs.
Stable
OX BLOX trailer jack blocks are stable on practically any surface: grass, gravel, dirt, or asphalt.
Fits virtually all jacks
OX BLOX trailer jack blocks are specially designed to fit your tongue jack, post jack, foot jack, scissor jack, and more.
Stackable
Get more height with OX BLOX
OX BLOX are designed to stack on top of each other while still maintaining the same stability and strength. Even when stacked, OX BLOX are rated up to 10,000 lbs.
Made in USA
OX BLOX trailer jack blocks are designed and manufactured in the USA.
- Stackable
- Made in USA
- 10,000 lbs capacity
- 100% recycled plastic
- Supports virtually any jack
OX BLOX Single Block
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OX BLOX 4-Pack
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OX BLOX 5-Pack
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MAXX Single Block
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OX BLOX & Rubber Pad Bundle
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Rubber Pads 4-pack
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| Stackable | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Size | 12"L x 9.4"W x 6"H | 13.5"L x 13.5"W x 2.2"H | 12"L x 9.4"W x 6"H | 10.5"L x 10.5"W x 4"H | 12"L x 9.4"W x 6"H | 12"L x 12"W x 0.75"H |
| 100% Recycled Material | ✓ | ✓ | ✓ | ✓ | ✓ | no data |
| Made in USA | ✓ | ✓ | ✓ | ✓ | ✓ | no data |
| RV/Trailer compatibility | All tongue jacks, bumper pull trailer stabilizers, scissor jacks, horse trailers, boat trailers, utility trailers, wheels, posts | Specifically designed for RVs with larger stabilizers. Works for Class A motorhomes | All tongue jacks, bumper pull trailer stabilizers, scissor jacks, horse trailers, boat trailers, utility trailers, wheels, posts | Designed specifically for 9" round feet found on 5th wheels and other RVs. Also works on tongue jacks, scissor jacks, posts. | All tongue jacks, bumper pull trailer stabilizers, scissor jacks, horse trailers, boat trailers, utility trailers, wheels, posts | Works with virtually any trailer or RV. Level wheels by driving up on pads. Place under jack blocks for extra height and stability. |
From the brand
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OX BLOX Trailer Jack Blocks are made in America and are as strong as an ox.
The blocks are made from 100% recycled plastic, and run through a compression molding process that makes them practically indestructible. We overengineer our products to ensure they get the job done and last a lifetime.
Located in the mountains of Utah, we love camping and providing great products to fellow campers.
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Visit the OX BLOX store
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Visit the OX BLOX store
Product information
Warranty & Support
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Customers say
Customers find the trailer jack block sturdy and reliable, with one noting it works well with stabilizer jacks. They appreciate its lightweight design, with one mentioning it prevents sliding on slick concrete, and find it easy to level campers with. The product provides excellent stability for RVs and horse trailers, and customers consider it well worth the money.
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169 customers mention durability, 164 positive, 5 negative
...I am honestly impressed with how sturdy they are, great replacement for wood blocks. Got all 4 jacks sitting on them now. Would definitely recommendRead more
Heavy duty. Nice base to raise the tongue high enough to remove the stabilizer/wt distr bars. Especially handy if I back into an uphill space....Read more
This trailer jack block is solid and constructed very well. Probably the best thing you can buy for your camper or RV. Zero bendability....Read more
Lightweight but strong and durable. Had been using a big wood block - not only heavy but splinters at times....Read more
115 customers mention quality, 114 positive, 1 negative
Great product! Have used this for a few years now on several different trailers. Very sturdy and good weight....Read more
Very sturdy, could have another stop or nub on the side to keep the trailer from sliding a but its good for the job its doing.Read more
Well made and fit the leveling feet perfectly. Given they were a bit pricey, but being how well made they are it's probably well worth it.Read more
Very well made, perfect height, heavy duty construction, easy to move around and get out of the way, made in the USA!Read more
56 customers mention functionality, 56 positive, 0 negative
Works great and really strong but light weight.Read more
Works well to avoid having to put the wheel or foot on the trailer jack. Sturdy block.Read more
This work great and is more secure than having block of wood. Well made and tough.Read more
I use this on our 30' airstream. it is solidly made and does the job. It is better than using slabs of wood that absorb moisture as this does not.Read more
54 customers mention weight, 39 positive, 15 negative
Bought this for a travel trailer. I love how heavy and sturdy it is but have found it to be dangerously close to being too short to level the...Read more
Lightweight but strong and durable. Had been using a big wood block - not only heavy but splinters at times....Read more
it is heavy to move but compact and sturdy! I saw it on our last camping trip in one of the sites and ordered it.,...Read more
...I could have made out of wood, but this is cleaner and light weight even though it is plastic....Read more
42 customers mention ease of use, 41 positive, 1 negative
They keep my trailer secure. Jacks or tongue won’t slip. Easy to use, you just need a place to keep them. I have 4 and am great full.Read more
This thing is so simple but perfect for your RV. Why couldn’t I of thought of this? Every RVer is gonna have at least one of them....Read more
This product is easy to handle, use and very sturdy for my 25ft travel trailer. It's so much easier to use under my power tongue jack....Read more
...I used it for the first time a few weeks ago and so musher better and easier. Sturdy and lightweight!Read more
36 customers mention stability, 35 positive, 1 negative
Great purchase. Keeps front from sliding. Very substantial and stable, but still a reasonable weight....Read more
Sturdy & simple. Works great with lift leg or trolley wheel or stabilizing jack. Very well made.Read more
...Now since I don't have to extend it so much, there’s more stability for my small RV single axle....Read more
Wanted a sturdy support for our RV jack. Much better than the paving blocks we started out with.Read more
31 customers mention compatibility, 31 positive, 0 negative
Perfect for my horse trailer. Now the jack doesn't sink when stored over winterRead more
Great product for run-around gooseneck horse trailers within the weight limit! Appears that it will hold up nicely in different weather conditions.Read more
...Only complaint is it’s heavy and cumbersome to use. Perfect for a seasonal use or storage but not so much for overnight or shorter camping trips...Read more
...jack has a wheel on the bottom and the Jack Block has the perfect notch for a jack wheel. It's a simple device and one might argue pricey....Read more
44 customers mention value for money, 25 positive, 19 negative
This thing is worth the money ! It is sturdy, and way lighter than the bricks and won’t damage your paint when your not paying attention!Read more
Man, these things are pricey! But! They are fantastic and I don't think I'll ever have to replace them....Read more
...pricey, but if they stand the test of time, they are definitely worth it.Read more
I think it was too expensive.Read more
Solid quality.
These are exactly what I needed to replace the yellow plastic square supports. I’m using them on the manual stabilizers and the front power jack and they adapt perfectly. They look better too. These should be the last I ever need to buy.
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Top reviews from the United States
Last BLOX you'll ever NEED!!
Reviewed in the United States on November 15, 2025
Last BLOX you'll ever NEED!!
Reviewed in the United States on November 15, 2025These things are incredible!! Originally purchased more than a year and a half ago to hold a HUGE destination trailer. These things show ZERO wear and seem as though they're virtually indestructible to the elements. Despite needing 5 for my setup it provides unparalleled stability and makes the unit feel as solid as the ground it sits upon. Worth EVERY penny!! Couldn't be more proud that this level of superiority is MADE IN THE USA!!
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