We researched dozens of side tool boxes for trucks, comparing manufacturer specifications, published industry standards, and aggregated owner feedback from thousands of reviews. Our evaluation focused on material gauge, locking mechanisms, weather sealing, mounting hardware, and real-world durability. Here are the seven best options we found, with honest assessments of each box’s strengths and weaknesses.
| Photo | Product | Score | Buy |
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Dee Zee DZ8766 Heavy Duty Side Tool Box Top Pick Diamond tread aluminum, 16-gauge, 48-inch length, rotary latch, continuous hinge |
9.0 | 🛒 Check Price |
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Weather Guard Saddle Box 126-5-001 Runner Up White painted steel, 16-gauge, 48-inch, slam latch, full-length hinge |
8.7 | 🛒 Check Price |
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UWS EC-107-02 Economy Side Tool Box Best Value Black powder-coated steel, 20-gauge, 48-inch, paddle latch, continuous hinge |
8.4 | 🛒 Check Price |
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Rugged Ridge 18002.15 Side Tool Box Best for Off-Road Black textured steel, 18-gauge, 42-inch, T-handle latch, gasket seal |
8.1 | 🛒 Check Price |
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Plano 1875-00 Sportsman Tool Box Best Lightweight Polyethylene plastic, 48-inch, latch handles, weather-resistant |
7.8 | 🛒 Check Price |
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Kobalt 48-inch Steel Side Tool Box Budget Pick Steel, 22-gauge, 48-inch, paddle latch, powder coat |
7.3 | 🛒 Check Price |
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Truck Tool Box 48-inch Aluminum Side Box Lightweight Alternative Aluminum, 0.050-inch wall, 48-inch, slam latch, weather seal |
7.6 | 🛒 Check Price |
1. Dee Zee DZ8766 Heavy Duty Side Tool Box: Top Pick
In our evaluation, the Dee Zee DZ8766 stands out for its heavy-duty construction. The diamond tread aluminum lid paired with a 16-gauge steel base offers outstanding durability. Owner feedback consistently praises its resistance to rust and dents even after years of use. The rotary latch and continuous hinge add to its security and longevity. However, the weight is a real drawback for solo installation, and the price is on the higher side.
This box is best for truck owners who prioritize long-term durability and are willing to invest in a premium product. Skip it if you need a lightweight box or have a tight budget; the weight may also be an issue for smaller truck beds.
- Diamond tread aluminum with 16-gauge steel lid resists dents and corrosion
- Rotary latch system with padlock hasp provides reliable security
- Continuous full-length hinge prevents lid sag over time
Pros: Exceptional build quality and materials; Easy to install with included mounting hardware; Weather-resistant design with rubber gasket
Cons: Heavy at over 50 pounds, may require two people to install
2. Weather Guard Saddle Box 126-5-001: Runner Up
The Weather Guard Saddle Box is a classic choice for commercial use. We compared its slam latch mechanism against others and found it to be both secure and convenient. The gas spring assist is a nice touch, allowing one-handed operation. Based on owner feedback, the box holds up well in work environments, but the painted finish is less durable than powder coating or aluminum.
This box is ideal for contractors who need a rugged, easy-to-use storage solution. Skip it if you want a corrosion-proof finish or a lighter weight box; the steel construction adds significant heft.
- 16-gauge steel with white automotive-grade paint resists chipping
- Slam latch locks automatically when lid is closed
- Full-length hinge and gas spring props lid open
Pros: Slam latch adds convenience and security; Gas spring assist makes lid easy to lift; Rugged construction withstands heavy use
Cons: Paint can scratch over time, exposing steel to rust
3. UWS EC-107-02 Economy Side Tool Box: Best Value
The UWS EC-107-02 is an economical option that still delivers reliable storage. In our research, the 20-gauge steel is adequate for light to moderate use, and the powder coat resists corrosion better than paint. Owner feedback highlights the easy installation and good fit for most full-size trucks. However, the thinner metal means it can dent if you drop heavy tools on it.
This box is best for casual users or those on a budget. Skip it if you need maximum durability for harsh job sites; the lighter construction may not withstand constant abuse.
- 20-gauge steel with black powder coat offers decent protection
- Paddle latch with padlock hasp for security
- Continuous hinge and rubber gasket keep out moisture
Pros: Great value for the price point; Lightweight compared to heavy-duty models; Easy to install with included hardware
Cons: Thinner steel may dent under heavy impact
4. Rugged Ridge 18002.15 Side Tool Box: Best for Off-Road
The Rugged Ridge side tool box is designed with off-road enthusiasts in mind. We evaluated its 18-gauge steel and textured finish, which hold up well against branches and rocks. Owner feedback from off-road forums praises its compact footprint that doesn’t take up too much bed space. However, the 42-inch length limits storage capacity, and the T-handle latch can be stiff to operate.
This box is ideal for Jeep Gladiator or mid-size truck owners who go off-road. Skip it if you need a full-size box for a heavy-duty truck or if you want quick access with a paddle latch.
- 18-gauge steel with textured black finish resists scratches
- T-handle latch with key lock for security
- Gasket seal helps keep out dust and water
Pros: Compact size fits smaller trucks and off-road builds; Tough finish stands up to trail debris; Secure locking mechanism
Cons: Smaller capacity may not suit full-size trucks
5. Plano 1875-00 Sportsman Tool Box: Best Lightweight
The Plano Sportsman Tool Box is a budget-friendly plastic option that excels in weight savings. We compared its material to metal boxes and found it completely rust-proof, which is great for humid climates. Owner feedback mentions it holds up well for general storage, but some report cracking when overloaded or in freezing temperatures. The latch handles are not as secure as metal latches.
This box is best for light-duty use or for truck owners who want to minimize added weight. Skip it if you need heavy-duty security or plan to store heavy tools; the plastic may not withstand rough handling.
- Injection-molded polyethylene is rust-proof and lightweight
- Integrated latch handles with padlock loops
- Weather-resistant design with drain holes
Pros: Extremely lightweight at under 20 pounds; No rust or corrosion concerns; Affordable price
Cons: Plastic can crack under extreme cold or impact
6. Kobalt 48-inch Steel Side Tool Box: Budget Pick
The Kobalt side tool box is an entry-level option for those on a strict budget. In our research, the 22-gauge steel is the thinnest among the picks, and owner feedback reports denting from normal tool placement. The powder coat helps, but chips can lead to rust. The latch is functional but not as robust as premium models.
This box is suitable for occasional use or storing light items. Skip it if you need a box that will endure daily abuse or if you live in a corrosive environment; the thin metal and finish may not last.
- 22-gauge steel with powder coat finish
- Paddle latch with key lock
- Rubber gasket for weather resistance
Pros: Very affordable price point; Adequate for light storage needs; Easy to install
Cons: Thin steel dents easily and may rust if coating chips
7. Truck Tool Box 48-inch Aluminum Side Box: Lightweight Alternative
This aluminum side box from Truck Tool Box offers a good balance of weight and corrosion resistance. We evaluated its slam latch and found it works well, though some owners report it sticking. The aluminum is lighter than steel but also less impact-resistant; dents can occur if heavy objects strike it. The weather seal is effective for rain but not submersion.
This box is a solid choice for those who need a lightweight, rust-proof box for general use. Skip it if you require maximum durability for heavy tools or rough environments; the thin aluminum may not hold up as well as thicker steel.
- All-aluminum construction resists rust
- Slam latch for quick locking
- Weather seal keeps contents dry
Pros: Lightweight and easy to install; Corrosion resistant; Slam latch is convenient
Cons: Thin aluminum can dent more easily than steel
Frequently Asked Questions
What size side tool box fits my truck?
Measure the width of your truck bed between the wheel wells. Most side boxes come in lengths from 42 to 48 inches. A 48-inch box fits most full-size trucks, while 42-inch boxes are better for mid-size trucks. Always check your bed dimensions before purchasing.
Are aluminum or steel side tool boxes better?
Aluminum is lighter and rust-proof but can dent more easily. Steel is stronger and more impact-resistant but heavier and prone to rust if the finish is damaged. Choose based on your priority: weight and corrosion resistance (aluminum) or durability (steel).
How do I secure my side tool box to prevent theft?
Most boxes have a locking latch with a padlock hasp. Use a high-quality padlock. For added security, you can bolt the box to the truck bed using the included hardware or add a security cable. Some boxes offer slam latches that lock automatically.
Will a side tool box fit with a tonneau cover?
It depends on the cover. Low-profile tonneau covers may interfere with side boxes that sit above the bed rail. Some covers are designed to work with tool boxes. Measure your bed and check the box height; you may need a cover that mounts below the rail.
How do I maintain my side tool box?
Regularly clean the box with mild soap and water. Check the weather seal for cracks and replace if needed. Lubricate hinges and latches with silicone spray. For steel boxes, touch up any paint chips to prevent rust. Aluminum boxes need less maintenance but should be cleaned to remove road salt.
Our Verdict
After comparing specifications, safety features, and owner feedback, our top pick is the Dee Zee DZ8766 Heavy Duty Side Tool Box for its exceptional build quality and durability. The Weather Guard Saddle Box 126-5-001 is a close runner-up, offering convenient slam-latch operation and gas spring assist. Choose based on your budget and specific needs.
