After researching dozens of side boxes for trucks, comparing manufacturer specifications, industry standards, and aggregated owner feedback, we identified the top performers. Our evaluation focuses on real-world durability, security features, ease of installation, and value. Whether you need weatherproof storage for tools or secure lockable compartments, this guide helps you choose the right box for your truck.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Dee Zee DZ8750 Heavy Duty Side Box Best Overall Aluminum construction, 24.5 x 18 x 18 inches, 5.5 cu ft capacity |
9 | 🛒 Check Price |
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UWS ECX-100 Economy Crossover Box Best Value Steel construction, 60 x 16 x 16 inches, 4.2 cu ft capacity |
8.7 | 🛒 Check Price |
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Weather Guard Saddle Box 126-0-001 Best for Professionals Aluminum, 60 x 15 x 15 inches, 5.0 cu ft capacity, double lid |
9.2 | 🛒 Check Price |
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Rugged Ridge 11201.05 Black Side Box Best for Off-Road Polyethylene, 36 x 12 x 12 inches, 2.0 cu ft capacity |
8.4 | 🛒 Check Price |
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Truck Bed Box by Buyers Products B300 Most Secure Steel, 48 x 15 x 15 inches, 4.5 cu ft capacity, keyed lock |
8.1 | 🛒 Check Price |
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Kobalt 60 in. Steel Side Box Budget Pick Steel, 60 x 14 x 14 inches, 3.8 cu ft capacity |
7.8 | 🛒 Check Price |
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Husky 22 in. Steel Side Box Compact Option Steel, 22 x 12 x 12 inches, 1.5 cu ft capacity |
7.3 | 🛒 Check Price |
1. Dee Zee DZ8750 Heavy Duty Side Box: Best Overall
The Dee Zee DZ8750 stands out for its solid aluminum construction and thoughtful design. In our evaluation, the diamond plate surface and welded seams provide outstanding durability against road debris and weather. Owner feedback consistently praises the push-button lock mechanism for its reliability, and the pre-drilled holes make mounting straightforward. However, the box’s weight can be a drawback for solo installation, and the finish may show scratches over time.
This side box is ideal for truck owners who prioritize ruggedness and security above all. If you need a lightweight option or prefer a plastic box for corrosion resistance in salt environments, consider other picks. The DZ8750 is best suited for full-size trucks with a sturdy bed rail.
- Heavy-duty diamond plate aluminum body resists dents and corrosion.
- Push-button lock with reinforced lid hinges for security.
- Pre-drilled mounting holes and included hardware simplify installation.
Pros: Exceptional build quality and weather resistance.; Spacious interior fits large tools and gear.
Cons: Heavy at over 50 pounds, may require two people to install.
2. UWS ECX-100 Economy Crossover Box: Best Value
The UWS ECX-100 offers a solid balance of price and performance. Based on owner feedback, the powder-coated finish holds up well under typical use, and the lock mechanism is adequate for securing tools. We compared its steel construction to aluminum alternatives and found it heavier but still manageable. The single lid design limits access to one side, which some users find inconvenient.
This box is a good choice for budget-conscious buyers who need basic weather protection and security. If you require a double-lid design for easier access or aluminum for lighter weight, you may want to look elsewhere. The ECX-100 is best for occasional use in mild climates.
- Powder-coated steel resists rust and scratches.
- Single lid design with keyed cylinder lock.
- Mounts directly to truck bed rails with included brackets.
Pros: Affordable without compromising basic durability.; Easy to install with clear instructions.
Cons: Steel can dent if heavy objects are dropped on it.
3. Weather Guard Saddle Box 126-0-001: Best for Professionals
Weather Guard is a trusted brand among tradespeople, and the 126-0-001 saddle box lives up to that reputation. Our research shows that the aluminum body and stainless steel hardware resist corrosion exceptionally well, even in harsh environments. The double lid design allows easy access from either side, a feature highly valued by professionals. Owner reviews highlight the tight seal that keeps out dust and rain.
However, the cost is significantly higher than many competitors. If you only need occasional storage or have a tight budget, this box may be overkill. It is ideal for contractors and heavy users who demand maximum durability and convenience.
- Heavy-duty aluminum with stainless steel hinges and latch.
- Double lid design for access from either side of the truck.
- Weather-resistant seals keep contents dry.
Pros: Excellent build quality and professional-grade security.; Convenient dual access improves workflow.
Cons: Premium price point, not for casual users.
4. Rugged Ridge 11201.05 Black Side Box: Best for Off-Road
The Rugged Ridge side box is built for abuse on the trail. In our evaluation, the polyethylene material is impervious to rust and dents, and the UV stabilizers prevent fading. Owner feedback from off-road enthusiasts praises its ability to withstand mud and water without issues. The lockable latch provides basic security, though it is not as sturdy as metal boxes.
This box is not suited for those who need to store heavy or oversized items due to its modest dimensions. It is best for Jeep and truck owners who prioritize weight savings and corrosion resistance over maximum capacity.
- UV-resistant polyethylene won't rust or dent.
- Lockable latch with weatherproof gasket.
- Lightweight design for easy installation and removal.
Pros: Completely rust-proof, ideal for off-road and marine environments.; Lightweight and easy to handle.
Cons: Smaller capacity may not fit larger tools.
5. Truck Bed Box by Buyers Products B300: Most Secure
The Buyers Products B300 is designed with security as a priority. The reinforced lock plate and heavy-gauge steel make it difficult to break into, according to owner reports. However, the weight and bulk can be a challenge for DIY installation. The powder coating is durable but can chip if impacts occur.
This box is a good fit for users who store valuable tools and need confidence. If you need a lighter box or easier access, other options may be better. The B300 is best for those who prioritize security over convenience.
- Heavy-gauge steel with reinforced lock plate.
- Powder-coated finish for weather resistance.
- Bolt-on installation with security brackets.
Pros: Very secure with durable locking mechanism.; Sturdy construction resists prying.
Cons: Heavy and cumbersome to install alone.
6. Kobalt 60 in. Steel Side Box: Budget Pick
The Kobalt side box is a budget-friendly option that covers the basics. Based on owner feedback, it provides adequate storage for light-duty use. The steel construction is functional but not as durable as higher-end boxes. The lock mechanism has received mixed reviews, with some users experiencing sticking over time.
This box is suitable for casual users who need occasional storage and are willing to accept lower build quality. If you plan to use it daily or store expensive gear, investing in a more secure model is recommended. The Kobalt is best for DIYers on a tight budget.
- Economical steel construction with black powder coat.
- Single lid with key lock.
- Pre-drilled mounting holes for quick install.
Pros: Very affordable for a full-length side box.; Decent capacity for the price.
Cons: Thinner steel may dent easier than premium options.; Lock feels less secure; some owners report jamming.
7. Husky 22 in. Steel Side Box: Compact Option
The Husky compact side box is designed for those who need minimal storage. In our evaluation, its small size is both a strength and a weakness. It fits well in tight spaces but cannot hold larger items. The steel construction is adequate for light loads, but the lock is not very strong. Owner reviews note that it is best suited for storing small accessories like straps or gloves.
This box is not for anyone needing significant storage space or high security. It is a good choice for truck owners who want a simple, unobtrusive box for occasional use. If you require more capacity, consider a larger model.
- Compact steel box for small items.
- Powder-coated finish with key lock.
- Mounts to bed rail or side wall.
Pros: Small footprint leaves more bed space.; Lightweight and easy to install.
Cons: Limited capacity, only for small tools.; Lock is basic and not very secure.
Frequently Asked Questions
What is the best material for a truck side box?
Aluminum is generally the best material for truck side boxes because it is lightweight, rust-resistant, and durable. Steel is stronger but heavier and prone to rust if the coating is damaged. Polyethylene is rust-proof and lightweight but less secure and can crack in extreme cold. Your choice depends on your priorities: aluminum for a balance of durability and weight, steel for maximum security, and polyethylene for corrosion resistance.
How do I install a side box on my truck?
Most side boxes come with pre-drilled holes and mounting brackets. Installation typically involves positioning the box on the bed rails, marking and drilling holes if not pre-drilled, and bolting the box securely. Always use the included hardware and follow the manufacturer’s instructions. Some boxes require two people due to weight. Ensure the box does not interfere with the truck’s tailgate or bed lights.
Are truck side boxes weatherproof?
Most side boxes are weather-resistant, not fully waterproof. They feature seals and gaskets to keep out rain and dust, but prolonged exposure to heavy rain or pressure washing can allow moisture inside. Aluminum and steel boxes with powder coating resist rust, while polyethylene boxes are naturally waterproof. For maximum protection, look for boxes with reinforced seals and drainage channels.
Can I use a side box with a tonneau cover?
Yes, but compatibility depends on the design. Low-profile side boxes may fit under roll-up or folding tonneau covers, while taller boxes may interfere. Always check the dimensions and clearance. Some covers are designed to work with specific side boxes. Retractable covers usually require more clearance. Measure your bed and cover before purchasing.
What size side box should I get?
The size depends on your storage needs and truck bed dimensions. Full-length boxes (48-60 inches) offer maximum capacity but reduce bed space. Compact boxes (20-36 inches) are better for small tools and leave room for other cargo. Measure the width and height of your bed rails and consider what you plan to store. Also check that the box does not block the tailgate or rear view.
Our Verdict
After thorough research and comparison, the Dee Zee DZ8750 is our top pick for its outstanding durability, security, and overall value. For professionals or those needing dual access, the Weather Guard 126-0-001 is an excellent runner-up with superior build quality and convenience.
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