Over the wheel well tool boxes maximize bed space while keeping tools organized and secure. We researched manufacturer specifications, aggregated owner feedback, and evaluated safety and fitment standards to bring you this guide. Our picks range from heavy-duty steel to lightweight aluminum, with honest pros and cons for each.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Dee Zee DZ8750 Heavy Duty Chest Best Steel Steel, 16 gauge, 21x16x16 inches |
9.2 | 🛒 Check Price |
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UWS ECX-1510 Aluminum Low Profile Best Aluminum Aluminum, 15x10x10 inches |
8.8 | 🛒 Check Price |
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Weather Guard 126-5-001 Saddle Box Best Security Steel, 20 gauge, 24x14x14 inches |
8.5 | 🛒 Check Price |
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Buyers Products B1000 Aluminum Best Value Aluminum, 20x12x12 inches |
8.2 | 🛒 Check Price |
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Rugged Ridge 18003.10 Black Steel Best for Off-Road Steel, black powder coat, 22x16x15 inches |
7.9 | 🛒 Check Price |
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Delta II 1020 Aluminum Crossover Best Crossover Aluminum, 20x10x10 inches, crossover style |
7.6 | 🛒 Check Price |
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Truck Tool 2020 Steel Saddle Budget Pick Steel, 20 gauge, 20x12x12 inches |
7.3 | 🛒 Check Price |
1. Dee Zee DZ8750 Heavy Duty Chest: Best Steel

In our evaluation, the Dee Zee DZ8750 stands out for its heavy-duty steel build. Owner feedback consistently praises its resistance to dents and weather. The gas spring lid assist is a nice touch, though it adds weight.
A real limitation is the weight; it can be cumbersome to install alone. If you need a lighter box or have limited bed space, consider aluminum options. Otherwise, this is a top choice for durability.
- 16-gauge diamond plate steel for extreme durability
- Gas spring lid assist for easy opening
- Locking latch with weather seal
Pros: Very rugged construction; Smooth lid operation
Cons: Heavy at 45 lbs
2. UWS ECX-1510 Aluminum Low Profile: Best Aluminum
Based on owner feedback, the UWS ECX-1510 is a favorite for those wanting a low-profile, lightweight box. The aluminum construction resists rust and is easy to handle. We compared it to steel boxes and found it adequate for most hand tools.
However, its smaller size means you cannot store bulky items like power tools. If you need more volume, look at larger models. It is best for light-duty users who prioritize weight savings.
- Lightweight aluminum saves fuel and is easy to install
- Low profile design preserves rear visibility
- Stainless steel latch with key lock
Pros: Very lightweight; Good corrosion resistance
Cons: Limited capacity for larger tools
3. Weather Guard 126-5-001 Saddle Box: Best Security
Weather Guard is known for security, and the 126-5-001 delivers. The recessed lock and paddle handle make prying difficult. Owner feedback highlights the strong construction and weather sealing.
On the downside, the price is higher than many competitors, and the steel adds weight. If security is your top concern, this is a solid pick. For budget-conscious buyers, other options offer similar features for less.
- Recessed paddle handle with heavy-duty lock
- Full-length piano hinge for strength
- Powder coat finish resists scratches
Pros: Excellent lock security; Sturdy hinge
Cons: Higher price point
4. Buyers Products B1000 Aluminum: Best Value

In our comparison, the Buyers Products B1000 offers the best value for budget-minded buyers. It is made of aluminum, so it is lighter than steel, and owner feedback indicates it holds up well for light to medium use.
However, some users report the weather seal can wear out after a few years. If you live in extreme climates, you might prefer a box with a better seal. It is ideal for occasional use and tight budgets.
- Affordable aluminum construction
- Easy bolt-on installation
- T-handle lock with weather seal
Pros: Great price for aluminum; Decent capacity
Cons: Lid seal may degrade over time
5. Rugged Ridge 18003.10 Black Steel: Best for Off-Road

The Rugged Ridge 18003.10 is built for trucks that see rough terrain. The steel construction and powder coat handle bumps well. Owner feedback from off-roaders is positive regarding durability.
But the powder coat can chip if struck hard, leading to rust. Also, it is heavy. If you do not off-road, a lighter aluminum box may be better. It is a niche pick for serious off-roaders only.
- Heavy-duty steel for rough conditions
- Black powder coat resists rust
- Lockable latch with weather seal
Pros: Tough for off-road use; Good size for larger tools
Cons: Paint can chip off-road
6. Delta II 1020 Aluminum Crossover: Best Crossover

The Delta II 1020 is a crossover box that sits over the wheel wells, providing easy access to the entire bed. It is lightweight and simple. Owner feedback notes it is convenient for quick tool access.
However, the crossover design can be less secure than saddle boxes, and the aluminum is thinner. If you store high-value tools, consider a steel saddle box. This is best for light-duty users who value convenience.
- Crossover design for full bed access
- Lightweight aluminum
- Single key lock system
Pros: Easy access to bed; Lightweight
Cons: Not as secure as saddle boxes
7. Truck Tool 2020 Steel Saddle: Budget Pick

The Truck Tool 2020 is the most affordable option in our guide. It gets the job done for basic tool storage. Owner feedback indicates it works fine for light use, but the thinner steel can dent under heavy loads.
Additionally, the weather seal is minimal, so moisture can get in. If you need a box for occasional use and do not mind some compromises, this saves money. For frequent use or wet climates, invest in a better-sealed model.
- Budget-friendly steel saddle box
- Basic key lock
- Easy installation with included hardware
Pros: Lowest price among steel boxes; Decent capacity
Cons: Thinner steel may dent; Lid seal not weathertight
Frequently Asked Questions
What size over the wheel well tool box fits my truck?
Measure the width between your wheel wells and the available depth. Most full-size trucks accommodate boxes around 20-24 inches wide. Check your truck’s bed dimensions and the box’s specs to ensure a snug fit.
Are aluminum or steel tool boxes better?
Steel is heavier and more durable, resisting dents better, but prone to rust if scratched. Aluminum is lighter and rust-resistant but can dent more easily. Choose based on your priority: durability versus weight.
How do I install an over the wheel well tool box?
Most boxes bolt directly to the bed using brackets provided. Ensure the box is centered and level. Use the included hardware or aftermarket bolts. Some models require drilling, while others use existing holes.
Will a tool box affect my truck's safety?
If installed securely, it should not. Ensure the box does not block rear visibility or tail lights. Also, verify that the latch is secure to prevent the lid from opening while driving.
Can I use an over the wheel well box with a tonneau cover?
Yes, many low-profile boxes are designed to work with tonneau covers. Check the box height and cover compatibility. Some covers may require additional clearance.
Our Verdict
After comparing specs and owner feedback, the Dee Zee DZ8750 Heavy Duty Chest is our top pick for its exceptional steel durability and smooth operation. For a lighter alternative, the UWS ECX-1510 Aluminum Low Profile is an excellent runner-up, offering great corrosion resistance and easy installation.
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Video Guide
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