RV Trailer Jack Block 4PCS with Carry Bag - Stable Support

In this review the 4PCS RV Trailer Jack Block set is evaluated for owners of travel trailers, fifth wheels and small utility trailers who need a compact, reliable leveling and support solution. The bottom line: these blocks deliver steady, weather-proof support for typical RV jacks and stabilizers while staying easy to carry and store. The reviewer found the wide base, anti-slip surface and drainage hole especially useful when working on uneven, muddy or hot pavement, making these blocks a practical tool to keep a trailer level and reduce jack sway.

Key Features

• High load capacity: Each block is rated to support up to 10,000 pounds, providing robust support for most trailer jacks and feet.
• Anti-slip surface: Textured top and grooves help secure jacks in place so the jack head is less likely to slide or shift under load.
• Weather-proof construction: Molded from tough plastic that resists cracking and tolerates extreme hot and cold conditions for long life outdoors.
• Built-in drain hole: The drain keeps water and mud from pooling under the jack, which helps prevent slippage and extends service life in wet conditions.
• Portable kit: Each block includes a handle and rope and the set stores in the included carrying bag for compact transport and organized storage.
• Wide compatibility: Works with tongue jacks, scissor jacks, post feet and most stabilizers, so you can use the same blocks across trailers.

Who It's For

The kit is ideal for RV owners, weekend campers and tow vehicle users who need a light, durable solution to raise and stabilize a jack on soft ground or uneven campsites. Its compact size and carrying bag make it a good choice for people who value easy storage and transport when space is limited.

Those who need extremely tall leveling stacks or heavy industrial support should look elsewhere, since these blocks are modestly sized at 11 in by 11 in by 4.3 in and intended for typical recreational trailers rather than permanent heavy-duty rigs.

Pros & Cons

Pros

• Strong load capacity gives confidence under most trailer jacks.
• Anti-slip texture and wide base reduce jack movement on uneven ground.
• Lightweight and comes with a carrying bag and handles for easy transport.

Cons

• Height is fixed at 4.3 in, so users needing greater lift will need stacking or alternate blocks.
• Plastic construction, while durable, may feel less rigid than steel solutions for very heavy commercial use.

Specifications

Our Verdict

The 4PCS RV Trailer Jack Block set is a practical, value-minded choice for most RV owners who need dependable support and easy transport. With strong load capacity, anti-slip texture and a drain hole to handle wet conditions, the blocks solve common campsite leveling problems without taking up much space. Buy this kit if you want a simple, weather-proof stabilizing solution; choose taller or heavy-duty alternatives only if you need extra lift or industrial strength.

Frequently Asked Questions

Are these blocks stackable?
Yes, they can be stacked to gain additional height, but each block is 4.3 in tall so stacking changes stability and should be done carefully.

Will they work with scissor jacks?
Yes, the top textures and grooves are designed to secure scissor jacks, tongue jacks and most stabilizer feet.

Do they resist cracking in hot weather?
The blocks are made from tough plastic formulated to withstand extreme hot and cold conditions to reduce cracking over time.