After researching manufacturer specs, safety standards, and aggregated owner feedback, we evaluated seven back seat tool boxes designed to fit behind the seats of pickup trucks and SUVs. Our comparison focuses on security, durability, ease of installation, and real-world storage capacity. We found that not all boxes are created equal: some prioritize theft resistance, others maximize space, and a few fall short on fit or build quality. Below are our findings, including honest limitations for each pick.
| Photo | Product | Score | Buy |
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Dee Zee DZ8740 Black Powder Coated Heavy Duty Back Seat Tool Box Best Overall Steel construction, 18-gauge, 41.5 x 12 x 9.5 inches, 35 lbs |
9.0 | 🛒 Check Price |
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Weather Guard 123-0-001 Steel Back Seat Tool Box Runner Up 16-gauge steel, 42 x 11.5 x 9.5 inches, 38 lbs |
8.7 | 🛒 Check Price |
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UWS SB-1 Black Steel Back Seat Tool Box Best Value 18-gauge steel, 38 x 10.5 x 8.5 inches, 28 lbs |
8.4 | 🛒 Check Price |
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Kobalt KSTB-1 Black Steel Back Seat Tool Box Compact Pick 18-gauge steel, 34 x 10 x 8 inches, 22 lbs |
8.1 | 🛒 Check Price |
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Truck Box USA TB-1 Heavy Duty Back Seat Tool Box Heavy Duty 16-gauge steel, 40 x 12 x 10 inches, 40 lbs |
7.8 | 🛒 Check Price |
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Plano 1820-00 Heavy-Duty Back Seat Tool Box Lightweight Alternative Polypropylene resin, 36 x 11 x 9 inches, 12 lbs |
7.3 | 🛒 Check Price |
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Du-Ha 051-1000-00 Under Seat Storage Box Specialty Fit Polyethylene, vehicle-specific fit for Ram 1500 (2019+), 32 lbs |
7.0 | 🛒 Check Price |
1. Dee Zee DZ8740 Black Powder Coated Heavy Duty Back Seat Tool Box: Best Overall
The Dee Zee DZ8740 is a strong back seat tool box that we evaluated as the best overall based on its heavy-duty 18-gauge steel construction and secure locking mechanism. The continuous piano hinge runs the full length of the lid, preventing prying, and the recessed lock hasp accepts a padlock (not included) for added theft deterrence. Owner feedback consistently praises its durability, with many noting it holds up well in extreme temperatures and resists corrosion even in humid climates. In our research, it fits most full-size trucks like Ford F-150, Ram 1500, and Chevy Silverado, though some users reported minor fit adjustments needed for certain models with rear seat contours.
However, the box is heavy at 35 pounds, which may make installation a two-person job or challenging for those with limited strength. The interior is unpainted, which could lead to scratches over time. We recommend this box for truck owners who prioritize security and longevity over weight savings. If you need a lighter option or have a compact truck, you may want to consider the UWS model instead.
- Heavy-duty 18-gauge steel with black powder coat finish resists rust and dents
- Continuous piano hinge and recessed lock hasp for added security
- Fits most full-size trucks behind the seat, includes mounting hardware
Pros: Exceptional build quality and security; Easy to install with included brackets
Cons: Heavy at 35 lbs may be cumbersome for some users
2. Weather Guard 123-0-001 Steel Back Seat Tool Box: Runner Up
The Weather Guard 123-0-001 is a premium back seat tool box that we compared as a top contender due to its 16-gauge steel, which is thicker than most competitors. The integrated lock cylinder with two keys provides a clean, secure closure without needing a separate padlock. Owner reviews highlight the foam padding on the back, which protects the rear seat upholstery and minimizes noise while driving. In our evaluation, the fit is precise for full-size trucks, and the textured finish hides scratches well.
That said, the box is heavy at 38 pounds, and some owners of newer trucks with limited rear seat clearance reported that the box interferes with seat folding or forward travel. The price is also higher than many alternatives, making it less appealing for budget-conscious buyers. We suggest this box for those who want maximum security and are willing to pay a premium, but skip it if you need a lighter box or have a compact truck.
- 16-gauge steel with a textured black powder coat for superior strength
- Full-length lid with a heavy-duty lock rod and cylinder lock (keys included)
- Includes foam padding to protect rear seat and prevent rattling
Pros: Extremely durable 16-gauge steel; Integrated lock system is more convenient than padlock hasp
Cons: Higher price point compared to similar boxes; Heavy and may reduce seat travel on some trucks
3. UWS SB-1 Black Steel Back Seat Tool Box: Best Value
The UWS SB-1 is a budget-friendly back seat tool box that we researched as the best value pick. It is made of 18-gauge steel with a durable powder coat, offering solid protection for tools at a lower price point. Its compact dimensions (38 inches wide) allow it to fit many mid-size trucks like the Toyota Tundra and Nissan Titan, as well as full-size models. Owner feedback indicates that the box installs easily with the included brackets and that the finish holds up well over time.
However, the smaller size limits what you can store: longer tools like a 24-inch breaker bar may not fit. The lid lacks a gas strut, so you must prop it open manually, which can be inconvenient when accessing contents frequently. We recommend this box for those with a mid-size truck or who need a lighter, more affordable option. If you require maximum capacity or a self-opening lid, consider the Dee Zee or Weather Guard models.
- Compact design fits many mid-size and full-size trucks
- Recessed lock hasp for padlock security (lock not included)
- Powder coat finish resists scratches and corrosion
Pros: Affordable without sacrificing steel construction; Lighter weight makes installation easier
Cons: Smaller interior capacity may not fit larger tools; Lid does not have a gas strut, must be propped manually
4. Kobalt KSTB-1 Black Steel Back Seat Tool Box: Compact Pick
The Kobalt KSTB-1 is a compact back seat tool box that we evaluated for smaller vehicles. At 34 inches wide and 22 pounds, it is one of the smallest and lightest boxes we researched, making it easy to install and remove. It fits well in compact trucks like the Ford Ranger and Chevrolet Colorado, as well as some SUVs with limited rear seat space. The black powder coat finish is decent, but owner reviews note that it can chip if scraped against metal.
The primary limitation is capacity: the interior is too small for long tools or a full socket set. Some owners reported that the lid does not seal tightly against dust, which could be an issue for those in dry, dusty environments. We recommend this box for users with compact trucks who need basic storage for small items like jumper cables, gloves, and a few hand tools. If you need more space or better dust sealing, look at the larger Dee Zee or Weather Guard models.
- Narrow 34-inch width fits compact trucks and some SUVs
- Lightweight at 22 lbs for easy handling
- Recessed lock hasp accepts padlock (not included)
Pros: Ideal for compact trucks like Ford Ranger or Chevy Colorado; Low profile fits under most rear seats
Cons: Limited storage space for larger tools; Thinner steel may dent more easily than heavier gauges
5. Truck Box USA TB-1 Heavy Duty Back Seat Tool Box: Heavy Duty
The Truck Box USA TB-1 is a heavy-duty back seat tool box that we researched for its solid 16-gauge steel and large capacity. It offers one of the largest interiors among the boxes we compared, able to store bulky items like a 1/2-inch impact wrench or a large socket set. The dual-keyed locks provide security, and the powder coat finish is thick and chip-resistant. Owner feedback on forums praises its strength, but some note that the box is quite heavy and may require two people to install safely.
However, we found that the fit can be inconsistent: some owners of Ford Super Duty trucks reported that the box did not sit flush against the back wall, leaving a gap. The weight also makes it impractical for those who frequently remove the box. We recommend this box for users with older full-size trucks who need maximum durability and storage and do not mind the weight. If you have a newer truck or need a lighter box, consider the Weather Guard instead.
- Extra-thick 16-gauge steel for maximum strength
- Large interior volume accommodates bulky tools
- Includes two keyed locks for added security
Pros: Very durable construction; Spacious interior
Cons: Very heavy (40 lbs) and may be difficult to install; Some fitment issues reported on newer truck models
6. Plano 1820-00 Heavy-Duty Back Seat Tool Box: Lightweight Alternative
The Plano 1820-00 is a plastic back seat tool box that we evaluated as a lightweight alternative to steel models. Made of heavy-duty polypropylene, it weighs only 12 pounds, making it the easiest box to install and remove. The gasketed lid helps keep out dust and moisture, and the removable tray is handy for small parts. Owner reviews appreciate the rust-free nature and the low price point.
However, security is a major concern: the plastic lid can be pried open with moderate force, and the latch is not as sturdy as steel hasps. Some owners in colder climates reported that the plastic became brittle and cracked after a few winters. We recommend this box for those who store only lightweight items like gloves, straps, or emergency kits and who do not require high security. If you need to protect expensive tools, choose a steel box like the Dee Zee or Weather Guard.
- Lightweight plastic construction at only 12 lbs
- Weather-resistant with a gasketed lid to keep out moisture
- Removable tray for organizing smaller items
Pros: Very lightweight and easy to install; No rust concerns
Cons: Not as secure as steel boxes, can be pried open; Plastic may crack under extreme cold or heavy loads
7. Du-Ha 051-1000-00 Under Seat Storage Box: Specialty Fit
The Du-Ha 051-1000-00 is a vehicle-specific under-seat storage box that we researched for its custom fit in 2019+ Ram 1500 trucks. It is molded from heavy-duty polyethylene and designed to utilize the space under the rear seat, leaving the seat functional. The locking latch with key provides decent security, and the box is hidden from view, deterring theft. Owner feedback is positive for fit and finish, with many noting it looks like a factory option.
However, the plastic material is not as strong as steel, and some owners reported that the lid flexes under heavy loads. It is also limited to specific vehicles: only Ram 1500 (2019+) and a few other models. If you do not own a compatible truck, this box will not fit. We recommend this box for Ram 1500 owners who want a clean, integrated storage solution for light tools or emergency gear. If you need a universal fit or steel construction, look at the Dee Zee or Weather Guard.
- Custom-molded to fit under the rear seat of specific truck models
- Hinged lid with locking latch (key included)
- Maximizes hidden storage without losing seat space
Pros: Perfect fit for compatible trucks, no gaps; Keeps tools out of sight and secure
Cons: Only fits specific vehicle years and models; Plastic construction may not withstand heavy tools
Frequently Asked Questions
Will a back seat tool box fit in my truck?
Most back seat tool boxes are designed for full-size and mid-size pickup trucks. Measure the width between your rear seat and the back wall, as well as the height and depth. Many manufacturers provide fitment guides online. Compact trucks may require a narrower box like the Kobalt KSTB-1, while full-size trucks can accommodate wider models like the Dee Zee DZ8740.
Are plastic back seat tool boxes secure?
Plastic boxes, such as the Plano 1820-00, are lighter and rust-proof but offer less security than steel models. They can be pried open more easily and may crack under extreme conditions. For storing valuable tools, we recommend a steel box with a locking mechanism.
How do I install a back seat tool box?
Most steel boxes come with mounting brackets and hardware that attach to the floor or seat frame. Installation typically requires basic hand tools and about 30 minutes. Plastic boxes may use straps or simply sit in place. Always follow the manufacturer’s instructions and ensure the box is secured to prevent movement during driving.
Can I still fold my rear seat with a tool box installed?
It depends on the box and your truck. Some boxes are designed to allow the seat to fold forward, while others may block seat movement. Check the product dimensions and reviews for your specific vehicle. The Du-Ha box is designed to maximize space without interfering with seat function, but many steel boxes may limit seat travel.
What is the weight capacity of a back seat tool box?
Weight capacity is rarely published, but steel boxes can typically hold 50-100 pounds of tools, while plastic boxes may hold less. Overloading can cause the box to deform or the mounting brackets to fail. Distribute weight evenly and do not exceed the box’s structural limits.
Our Verdict
After comparing specifications, safety features, and owner feedback, the Dee Zee DZ8740 is our top pick for its balance of security, durability, and fit. The Weather Guard 123-0-001 is a close runner-up for those wanting an integrated lock and thicker steel. For budget-conscious buyers, the UWS SB-1 offers solid value, while the Plano 1820-00 is suitable for light-duty use. Choose based on your truck size, security needs, and tool storage requirements.
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