For buyers seeking durable, weatherproof storage under a pickup or trailer, aluminum underbody truck boxes offer lightweight strength, corrosion resistance, and secure locking. This guide highlights five top options suited for different truck beds, trailers, and work needs. Aluminum models are ideal for users who prioritize low weight without sacrificing durability. Read on to compare size, mounting style, and locking features to pick the best fit for your vehicle.
| Product | Approx. Dimensions | Best For | Key Benefit |
|---|---|---|---|
| VEVOR Underbody Truck Box | 48″×17″×18″ | Pro contractors and frequent travelers | Heavy-duty aluminum with waterproof design |
| Buyers Products Pro Series (24x24x36) | 24″×24″×36″ | Full-storage capacity on flatbeds | Smooth aluminum with barn doors and robust build |
| Buyers Products 1705305 (18x18x36) | 18″×18″×36″ | Versatile truck and trailer storage | Weather-resistant, 3-point locking |
| Buyers Products 1703300 (14x16x24) | 14″×16″×24″ | Compact spaces and tight fits | Locking T-Latch, heavy-duty for small trucks |
| Buyers Products 1705113 (18x18x72) | 18″×18″×72″ | Long, low-profile storage | Diamond tread aluminum, durable underbody box |
Note: All items are aluminum-based where specified, except one entry listed as steel. When choosing, consider mounting clearance, planned cargo, and environment to maximize longevity and security.
VEVOR Underbody Truck Box, 48″×17″×18″
The VEVOR box offers a heavy-duty aluminum construction with a diamond plate finish and a T-handle latch, designed for trucks, vans, and trailers. Best for users who need reliable waterproof storage under a vehicle with straightforward access. The included lock and key system enhances security. Caution: ensure mounting hardware compatibility with your chassis before installation. Ideal for contractors who carry tools and equipment in varying weather conditions.
Buyers Products Pro Series Smooth Aluminum Underbody Box (24x24x36)
Best for vehicles needing substantial storage with easy access via barn doors. The aluminum build resists corrosion and the large 24×24 footprint provides ample interior space, making it suitable for fleets or hitches where extra capacity matters. Better for long-term use and frequent loading. Limitations include the need for ample mounting space and potential clearance concerns on smaller trucks.
Buyers Products 1705305 Underbody Box (18x18x36)
Best for flatbed trucks and trailers needing weather-resistant protection with 3-point locking. Its smooth .100-inch aluminum paneling offers durability without excessive weight. Use this if you prioritize secure access when parked in varied climates. A limitation is its larger footprint, which may not suit compact bed configurations.
Buyers Products 1703300 Black Steel Underbody Box (14x16x24)
Best for tight spaces where smaller dimensions are mandatory. Although steel, not aluminum, this model offers sturdy protection and a compact size with a locking T-Latch. Choose this if you need a rugged, weather-resistant option for limited bed length. Best avoided if weight reduction is a priority or if aluminum is specifically required for corrosion resistance.
Buyers Products 1705113 18x18x72 Diamond Tread Box
Best for long, low-profile storage needs under a truck or trailer. The diamond tread aluminum surface adds durability and slip resistance, which helps when loading or unloading in oily or wet conditions. Choose this if you require extended length along the underbody and consistent weather protection. Limitation: very tall boxes may impact ground clearance on rough terrain.
Buying Guide: Key Considerations For Aluminum Underbody Boxes
- Material and corrosion resistance: Aluminum is lighter and resists rust, making it well-suited for exposed outdoor use.
- Size and mounting: Measure bed or frame clearance to ensure a proper fit and secure mounting.
- Locking mechanism: Look for padlock-ready latches or multi-point locking systems for security.
- Weather sealing: Waterproof or weatherproof designs keep contents dry in rain or road spray.
- Access style: Barn doors vs. top-hinged lids affect ease of loading and daily use.
- Weight vs. capacity: Aluminum reduces weight but verify payload limits and cargo needs.
Frequently Asked Questions
- What is the primary advantage of aluminum underbody truck boxes? – Aluminum offers lighter weight, corrosion resistance, and good durability for outdoor use.
- Are underbody boxes waterproof? – Many models advertise weatherproof or waterproof features; check seals and gaskets for the exact rating.
- Do these boxes fit all trucks? – Fit depends on bed width, frame clearance, bed height, and mounting points. Always verify dimensions before purchase.
- What locking options should I look for? – Look for corrosion-resistant latches and the ability to accommodate padlocks or integrated locking mechanisms.
- Is steel a good alternative? – Steel is very durable but heavier and more prone to rust; aluminum is preferred for weight-sensitive applications.
- How should I maintain aluminum underbody boxes? – Clean with mild detergent, avoid harsh chemicals, and check mounting hardware regularly for looseness or corrosion.