OULEME Heavy Duty Trailer Jack Block for RV, Camper, 5th Wheel (Supports up to 15,000 lbs)
Product description
What it is and what problem it solves
If your RV setup involves a tongue jack, stabilizer feet, or wheel-style jack points, you already know the deal: soft ground can turn a “simple landing” into an awkward wobble. The OULEME Heavy Duty Trailer Jack Block is designed to give that jack point a wider, steadier base—so the load has more surface area and the setup feels more controlled.
This is a block-style leveling/support piece made from recycled plastic. It’s meant to work under common jack foot styles (including round and square stabilizer foot plates) and also supports specific tongue jack post and wheel footprints described by the manufacturer. It’s the kind of accessory you keep around when you want fewer surprises once you’re parked.
At a glance: where it fits your setup
On paper, this block is built to cover a lot of real-world hitch and stabilizer shapes. The listing specifically says it supports “almost all” square jack foot and round jack foot sizes up to 9", and also fits a 2" tongue jack post and a 6x2" tongue jack wheel. It also mentions use with scissor stabilizers and similar setups, depending on how your trailer’s foot geometry lines up.
One detail worth paying attention to: it’s designed with a recessed post hole and an iron plate mounted at the bottom of that hole. The point of that design is to help prevent the post jack from sliding, and to be more wear-resistant over repeated use.
Key takeaways you’ll notice in use
This isn’t just “a plastic block.” The groove design on the top is made to improve stability when you stack the blocks. If you’ve ever tried to stack leveling blocks and ended up with a slightly crooked column, you’ll appreciate any attempt to keep alignment steadier.
The material choice is also part of the story. These jack blocks are made of recycled plastic with the brand claiming increased density and thickness. In practice, that usually translates to blocks that hold their shape and keep their support role when you rely on them day after day.
A practical example
Imagine you pull into a campsite with damp or uneven ground. You extend the tongue jack and aim to get the trailer level before you hitch everything up. Placing one block under the jack foot can help spread the load and reduce the “sinking” feeling. If you need additional height, stacking can be useful—though you’ll want to make sure the blocks sit flat and aligned thanks to that top groove design.
What stands out (and the limits to keep in mind)
There’s a clear strength here: the manufacturer rates each jack block to support up to 15,000 lbs. That matters because jack blocks are easy to undervalue until you’re under a load that actually tests the setup.
Still, it may not be the perfect match for every situation. Two things to consider:
- Compatibility depends on your jack/stabilizer footprint. The listing provides sizing guidance (square/round up to 9", 2" tongue jack post, 6x2" tongue jack wheel), so if your trailer’s feet are outside those ranges, you may need a different support style.
- Height planning isn’t trivial. The block’s listed height is 6.3", and it can be double-stacked to reach 11.1"—which may be enough for many level attempts, but it can feel limiting if your terrain demands more lift.
Tech specs
- Name: OULEME Heavy Duty Trailer Jack Block
- Type: Trailer jack support block for RV camper and 5th wheel setups
- Capacity: supports up to 15,000 lbs per block
- Material: recycled plastic
- Size/Dimensions: Height 6.3", Bottom L 11.2" x W 8.8", Top L 9.3" x W 7"
Care and considerations before buying
Before you add these to your RV kit, do a quick real-world check:
- Measure your jack foot or stabilizer footprint and compare it to the sizes mentioned (square/round up to 9", 2" tongue jack post, and 6x2" tongue jack wheel).
- Think about how you level on your usual trips. Since it’s 6.3" tall (and 11.1" when double-stacked), you’ll want to confirm the lift range lines up with what you typically need.
- Inspect the ground you park on. Even the best block can’t fully “fix” extreme soft spots—your goal is to improve stability and reduce shifting, not assume magic on unstable terrain.
Mini FAQ
What jack styles does this block claim to fit?
The listing mentions support for square jack foot and round jack foot (up to 9"), a 2" tongue jack post, and a 6x2" tongue jack wheel, plus scissor stabilizer use depending on footprint.
Can I stack these blocks?
Yes. The top has a groove design intended to enhance stability when stacked.
How much weight can each block handle?
Each block is rated to support up to 15,000 lbs.
Is it made from recycled materials?
Yes. It’s described as recycled plastic, with claims that density and thickness were increased.
Should you buy it?
This is a smart buy if you want a purpose-built jack block for RV and camper use—especially if your hitch or stabilizer feet match the sizes called out in the listing and you care about better stability on uneven ground.
You may want to skip it if your trailer’s jack/stabilizer footprint falls outside the stated ranges, or if you routinely need more lift than what a 6.3" block (or 11.1" when double-stacked) can realistically provide.
In short: it’s a practical heavy-duty support block for people who tow regularly and want a steadier setup process—just make sure your jack foot dimensions and your expected leveling height are actually compatible before committing.