VEVOR RV Trailer Jack Blocks 4-Pack — 6,000 lb Polypropylene Stabilizer Blocks, Stackable 9.65" Base for Camper Jacks

VEVOR Trailer Jack Block 4-pack: polypropylene leveling and stabilizing blocks rated 6,000 lb each to support RV jacks, feet, posts and fifth-wheel tongues.

Whether you park on gravel, turf, or a sloped campsite, these VEVOR camper stabilizer blocks create a wider, firmer base for your RV jack or stabilizer post. Molded from T30 polypropylene, each block stacks to add height, resists weathering, and helps protect your trailer’s tongue and undercarriage from sinking or shifting. The set contains four blocks plus instructions and is sized for easy handling and storage in typical travel trailers and motorhomes.

How do these blocks improve RV stability?

By increasing the contact area under a jack or foot, the blocks spread load over a larger surface to reduce ground penetration and lateral movement. The result is less wobble inside the RV and a more secure stance when parked on soft or uneven surfaces.

• 6,000 lb capacity per block supports heavy tongue loads.
• Large 9.65" x 9.65" footprint stabilizes on gravel, sand, or soil.
• Stackable design lets you fine-tune height in small increments.
• Drainage feature helps prevent water pooling beneath the jack.

Can I stack these blocks to reach different heights?

Yes — the blocks are shaped to nest securely when stacked so you can build height quickly and safely. Each block adds roughly 8 inches of support height, and stacking multiple blocks maintains lateral stability without slipping.

• Stackable geometry resists shifting under load.
• Use fewer or more blocks to match campsite grade.
• Stacking avoids makeshift wood piles or unstable improvisations.
• Easy alignment tabs ensure consistent, repeatable stacking.

Will these stand up to outdoor conditions and heavy use?

Formulated from polypropylene T30, the blocks withstand UV exposure, moisture, and typical oils or debris found at campsites. Their robust construction and integrated drainage make them a long-lasting solution for seasonal or full-time RV use.

• Polypropylene construction resists cracking and rot.
• Designed for UV, heat, oil, tar and soil exposure.
• Drainage ports prevent water retention and corrosion risk to metal feet.
• Durable enough for repeated stacking and transport.

What vehicles and jacks are these blocks compatible with?

These blocks are intended for broad compatibility with trailer tongue jacks, stabilizer posts, 5th-wheel feet, and similar support points on travel trailers, campers and motorhomes. Their flat, wide surface accepts most jack foot shapes and distributes loads evenly.

• Works with screw jacks, drop jacks, and standard stabilizer posts.
• Suitable for travel trailers, campers, and many motorhomes.
• Not a replacement for structural support—use as leveling/stabilizing aids.
• Four-block kit fits typical storage compartments for easy carry.

Who is this for: RV owners, seasonal travelers, and full-time campers who need a compact, durable way to level and stabilize their rigs on soft or uneven ground. If you want quick setup, predictable stacking, and components that resist weather and campsite debris, this VEVOR 4-pack provides a practical solution for safer, steadier parking without bulky equipment.