We researched and compared the top tool boxes for SUVs using manufacturer specifications, published safety and organization standards, and aggregated owner feedback. Our evaluation focuses on build quality, security, ease of mounting, and how well each box fits typical SUV cargo areas. Below are our findings to help you choose the right box for your needs.

Photo Product Score Buy
Dee Zee DZ8750 Dee Zee DZ8750
Best Overall
Heavy-duty steel, 18x12x12 in, 25 lb capacity
9.2 🛒 Check Price
Plano 1812 Gun Guard Plano 1812 Gun Guard
Best Waterproof
Polymer, 36x11x5 in, waterproof seal
8.7 🛒 Check Price
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UWS TB-101
Best Aluminum
Aluminum, 20x10x10 in, 15 lb capacity
8.4 🛒 Check Price
Truck-Box Tuff 20 Truck-Box Tuff 20
Best Budget
Polyethylene, 20x9x9 in, 10 lb capacity
7.8 🛒 Check Price
Keter Masterloader 24 Keter Masterloader 24
Best Modular
Resin, 24x12x12 in, removable tray
8.1 🛒 Check Price
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Rugged Ridge 15501.01
Best for Jeep SUVs
Steel, 15x8x8 in, 8 lb capacity
7.3 🛒 Check Price
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Homak RS024
Best Rolling
Steel, 24x12x12 in, wheels and pull handle
7.6 🛒 Check Price

1. Dee Zee DZ8750: Best Overall

Dee Zee DZ8750

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In our evaluation, the Dee Zee DZ8750 stands out for its robust steel construction and secure closure. Owner feedback consistently praises its resistance to dents and corrosion, even in humid climates. The piano hinge and lockable latch provide peace of mind when storing valuable tools. However, the weight is a consideration: at over 25 pounds empty, it can be cumbersome to move in and out of an SUV.

We recommend this box for SUV owners who prioritize security and durability and have a permanent or semi-permanent spot in the cargo area. Skip it if you need a portable box you frequently remove, as the weight and size make it less convenient for daily hauling.

  • Welded steel construction with powder coat finish resists rust and dents
  • Full-length piano hinge and recessed lock for security
  • Non-slip rubber feet protect cargo area floor

Pros: Extremely durable, holds up to heavy tools; Easy to install with included hardware
Cons: Heavy and bulky, may slide on carpet without rubber feet

2. Plano 1812 Gun Guard: Best Waterproof

Plano 1812 Gun Guard

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The Plano 1812 Gun Guard is designed for firearms but works well as a tool box for SUVs, especially if you need waterproof storage. Our research shows the O-ring seal is effective against rain and splashes, and the polymer shell is impact-resistant. Owner reviews note it fits neatly in the back of many SUVs without sliding around. The main limitation is that it does not include a lock, so you must buy a padlock for security.

This box is ideal for SUV owners who frequently go camping or work in wet conditions. Skip it if you need a fully lockable system without extra purchases, or if you store heavy tools that could crack the polymer over time.

  • O-ring sealed gasket keeps out water and dust
  • Strong polymer shell resists cracking in cold weather
  • Padlock tabs allow use of owner's lock

Pros: Excellent waterproofing, great for outdoor gear; Lightweight and easy to carry
Cons: Not lockable out of the box, requires separate padlock

3. UWS TB-101: Best Aluminum

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The UWS TB-101 is a premium aluminum tool box that offers a sleek look and lightweight performance. In our comparison, it is one of the most corrosion-resistant options, ideal for coastal areas. The foam lining helps prevent tools from rattling. However, its interior space is limited, making it best for a basic emergency kit rather than a full mechanic’s set. Owner feedback indicates the latch can be stiff initially but loosens over time.

This box suits SUV owners who want a stylish, rust-free solution for a small tool assortment. Skip it if you need to store many heavy tools, as the aluminum may dent under excessive weight.

  • Billet aluminum construction with polished finish
  • Stainless steel latch and hinge for corrosion resistance
  • Foam-lined bottom to reduce noise and protect cargo

Pros: Lightweight and rust-proof; Aesthetic brushed aluminum look
Cons: Smaller capacity, not for large tool sets

4. Truck-Box Tuff 20: Best Budget

Truck-Box Tuff 20

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The Truck-Box Tuff 20 is a budget-friendly option that provides basic tool storage for an SUV. We found that the plastic construction is adequate for light-duty tools like screwdrivers and wrenches, and the stackable design is handy for organizing multiple boxes. Owner reviews mention the lock is simple but functional. However, durability is a concern: several users reported cracking when the box was dropped or used in freezing temperatures.

This box is a good choice for occasional use or as a starter tool box. Skip it if you need something that can withstand heavy abuse or if you store valuable tools that require a more secure lock.

  • Molded plastic with reinforced corners
  • Snap-lock closure with key lock
  • Stackable design with interlocking lid

Pros: Very affordable, good for light use; Lightweight and stackable
Cons: Plastic can crack under extreme cold or impact

5. Keter Masterloader 24: Best Modular

Keter Masterloader 24

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The Keter Masterloader 24 offers a modular approach with a removable tray that is perfect for organizing sockets and bits. Our research shows the resin material holds up well to sun and rain, making it suitable for SUV owners who leave the box in the vehicle. Owner feedback highlights the convenience of the tray, but some users experienced latch breakage when the box was packed too full or dropped.

This box is best for DIY enthusiasts who want to keep small parts separate from larger tools. Skip it if you need a heavy-duty box for professional use, as the resin and latches may not withstand constant heavy loads.

  • Removable top tray for small parts organization
  • Heavy-duty resin resists UV and weather
  • Integrated handles for carrying

Pros: Versatile with removable tray; Weather-resistant and relatively light
Cons: Latches can break if overstuffed

6. Rugged Ridge 15501.01: Best for Jeep SUVs

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The Rugged Ridge 15501.01 is designed specifically for Jeep Wranglers but can fit in other SUVs with limited space. In our evaluation, the steel construction is solid, and the included brackets make installation straightforward. However, the interior is quite small, limiting its usefulness to a basic toolkit. Owner reviews often note that it is too small for anything beyond a tire repair kit and a few wrenches.

This box is suitable for Jeep owners who want a dedicated, secure spot for emergency tools. Skip it if you need to carry a comprehensive set of tools or if you do not own a Jeep, as the custom brackets may not fit other SUVs.

  • Black powder-coated steel
  • Mounting brackets included for Jeep Wrangler
  • Lockable latch

Pros: Custom fit for Jeep models; Sturdy steel build
Cons: Very small capacity, only for minimal tools

7. Homak RS024: Best Rolling

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The Homak RS024 is a rolling tool box that can be convenient for SUV owners who need to transport tools from the vehicle to a worksite. We found the steel body is durable, and the wheels and handle work well on smooth surfaces. Owner feedback appreciates the included tray, but many note that the wheels are too small for rough terrain and can get stuck. The box also takes up significant cargo space.

This box is ideal for those who frequently move tools short distances on pavement. Skip it if you often park on gravel or uneven ground, or if you prioritize maximizing cargo space for other gear.

  • Two fixed wheels and telescoping handle
  • Steel construction with powder coat
  • Removable tray and foam insert

Pros: Easy to roll across parking lots; Good organization with tray
Cons: Wheels are small and can jam on gravel

Frequently Asked Questions

What size tool box fits best in an SUV?

The best size depends on your cargo area. Measure the width between wheel wells and the height under the rear shelf. Common sizes are 18-24 inches long and 10-12 inches tall. A box that is too tall can block rear visibility.

Should I choose steel or plastic tool box for my SUV?

Steel offers superior security and durability but adds weight. Plastic is lighter and won’t rust but can crack in extreme temperatures. For occasional use, plastic is fine. For heavy tools or security, choose steel.

How do I secure a tool box in my SUV?

Many boxes have pre-drilled holes for mounting to the floor or side panels. You can also use ratchet straps or bungee cords to prevent sliding. Non-slip mats help keep the box in place.

Can I leave a tool box in my SUV in hot weather?

Metal boxes can get very hot inside but typically don’t warp. Plastic boxes may soften or warp in extreme heat. Avoid storing aerosol cans or batteries inside. Check the manufacturer’s temperature ratings.

Do tool boxes for SUVs come with locks?

Most steel boxes include a lock or latch that can accept a padlock. Many plastic boxes have built-in snap locks but may not be pick-resistant. For high security, choose a box with a keyed lock or use a heavy-duty padlock.

Our Verdict

After researching and comparing specifications and owner feedback, the Dee Zee DZ8750 is our top pick for its outstanding durability and security. The Plano 1812 Gun Guard is a strong runner-up for those needing waterproof storage. Choose based on your balance of weight, security, and weather resistance.