OULEME Trailer Jack Leveling Blocks 4-Pack — 15,000 lb Capacity, Fits 8.5" Pad, Interlocking & Anti-Slip

OULEME Trailer Jack Block 4-pack provides stable, crush-resistant support for RV tongue jacks, scissor stabilizers, and trailer wheels with up to 15,000 lbs capacity per block.

When you park a travel trailer, camper or fifth-wheel on uneven ground, a reliable jack block prevents sinking and keeps jacks square and secure. These OULEME blocks are molded from high-density polypropylene with interlocking grooves and an anti-slip base, sized to accept 8.5" pads and a variety of jack and wheel shapes. They stack securely to create extra height and pair with other OULEME leveling products for flexible site setup.

How does this block make leveling and stabilizing easier?

The design spreads load over a wide top and bottom surface to reduce ground pressure and stop jacks from punching into soft soil. Interlocking grooves let you stack blocks with confidence, while the anti-slip base keeps the stack from shifting under load. These features let you fine-tune height without improvising with wood or loose material.

• Top fits 8.5" pad, round feet up to 9", square jack feet, scissor stabilizers and 2" tongue posts.
• Interlocking grooves secure multi-layer stacks safely.
• Anti-slip base prevents lateral movement on compacted or gravel surfaces.
• Pairs with other OULEME leveling blocks for extended heights.

What are the size and capacity details I should know?

Each block measures 10" x 10" at the bottom and 8.5" x 8.5" at the top, standing 4.85" tall. When doubled, two stacked blocks reach about 8.2" in height. Every block is rated to support up to 15,000 pounds, making this kit suitable for most trailers, RV tongues and stabilizer applications.

• Single block height: 4.85"; stacked height: ~8.2".
• Bottom footprint: 10" x 10"; top footprint: 8.5" x 8.5".
• Capacity: 15,000 lbs per block for heavy-duty support.
• Compatible with common jack sizes and wheel assemblies for trailers and campers.

How durable are these blocks and will they last outdoors?

They’re molded from high-density polypropylene that resists crushing and deformation under repeated heavy loads. The material tolerates outdoor use, resisting moisture and many common environmental stresses so the blocks remain dependable season after season. Storing them out of direct UV for long periods can extend cosmetic life but they’re built for working conditions.

• High-density polypropylene construction resists crushing and warping.
• Engineered for repeated load cycles and outdoor use.
• Stable under temperature variations and common campsite conditions.
• Easy to clean—mud and grit rinse off without degrading structure.

Can these blocks work with different jack types and trailer setups?

Yes—the top profile and dimensions accept a wide range of jack feet and wheels, including round and square jack feet, 2" tongue posts and scissor stabilizer pads. This makes the blocks useful for travel trailers, fifth-wheels, toy haulers and many camper models. They’re also compatible with other OULEME leveling accessories for more height options.

• Supports round feet up to 9" and most square jack pads.
• Compatible with tongue jack wheels and scissor stabilizers.
• Works with OULEME leveling blocks for extended stacking configurations.
• Useful for trailer storage, long-term parking and campsite leveling.

Who is this for? Recreational vehicle owners, RV technicians and anyone who rigs trailers or campers will find these OULEME blocks a practical, long-lasting solution for leveling and stabilizing. They’re ideal for users who want a portable, high-capacity support system that fits common jack feet and wheels, reduces ground pressure, and stacks securely for adjustable height without improvisational fixes.