Heavy Duty Trailer Jack Block for RV and Camper - Supports 15,000 lbs

In this review the OULEME Heavy Duty Trailer Jack Block is examined for RV and camper owners who need reliable leveling and stabilization gear. The bottom line: these two recycled-plastic blocks are built to handle heavy loads and wide jack feet, making them a practical choice for owners of travel trailers, 5th wheels and motorhomes who value durability and versatility. The reviewer found the blocks especially useful for larger tongue jacks, round and square stabilizers, and situations where a larger landing area improves stability.

Key Features

• All-in-one fit: Works with square jack foot, round jack foot up to 9 in, 2 in tongue jack post, 6x2 in tongue jack wheel and scissor stabilizers so one product covers many needs.
• High load capacity: Each block is rated to support up to 15,000 lbs, providing confidence under heavy trailers and 5th wheels.
• Durable construction: Made from recycled plastic with anti-UV additives for thicker, denser structure that resists aging and outdoor exposure.
• Stackable height: Single block is 6 in tall and can be double-stacked to 10.4 in for additional height when required.
• Large round landing: The round top design increases contact surface and stability for jack feet and wheels.

Who It's For

The OULEME jack blocks are a good match for RV owners, camper and travel trailer users, and anyone with a 5th wheel who needs a sturdy, all-purpose leveling block that accepts multiple foot shapes and tongue jack wheels. They are particularly valuable for heavier rigs where a higher load rating and larger contact area reduce sinking and shifting on soft ground.

Those who should look elsewhere include users preferring lightweight metal jack pads for extreme compactness or owners who require integrated ratcheting systems or jacks-this product is a passive block intended to support and stabilize rather than mechanically lift.

Pros & Cons

Pros

• Broad compatibility with round and square jack feet and tongue jack wheels reduces the need for multiple adapters.
• High per-block capacity of up to 15,000 lbs offers strong support for heavy trailers.
• UV-stabilized recycled plastic construction increases durability and outdoor lifespan.
• Stackable design adds useful height without complex assembly.

Cons

• Being solid recycled plastic, the blocks are sturdy but heavier than ultra-light alternatives, which may matter for carry-on storage.
• No integrated securing strap or mounting hardware is included, so users must store them separately.

Specifications

Brand	OULEME
Pieces	2 PCS
Single block height	6 in
Double-stacked height	10.4 in
Bottom dimensions (L x W)	11.8 in x 10.8 in
Top dimensions (L x W)	7.3 in x 10.1 in
Max support per block	Up to 15,000 lbs

Our Verdict

These OULEME Heavy Duty Trailer Jack Blocks are a practical, value-minded choice for RV and trailer owners who need a rugged, broadly compatible support solution. The combination of a high load rating, UV-resistant recycled plastic and a large round landing area makes them particularly useful for heavier rigs and soft ground. They are worth buying for anyone seeking reliable, stackable support without specialized hardware.

Frequently Asked Questions

Can these blocks accept a round jack foot?
Yes, the round design accepts round jack feet up to 9 in and increases contact area for stability.

How tall are the blocks when stacked?
A single block is 6 in tall and two stacked reach approximately 10.4 in.

What is the weight capacity?
Each block is designed to support up to 15,000 lbs according to the product specifications.