Best Tool Box For Under Tonneau Cover – Top Picks & Guide

Does your truck bed feel like a black hole for tools? You need a secure spot for your gear, but a traditional toolbox eats up valuable space under your tonneau cover. Finding the perfect storage solution that fits snugly and keeps your equipment safe can feel like a frustrating treasure hunt. Many truck owners face this exact problem: how do you maximize secure storage without sacrificing the clean look or function of your covered bed?

Choosing the right toolbox for under your tonneau cover involves tricky decisions about size, security, and access. You worry about items rattling loose or, worse, not fitting at all! This guide cuts through the confusion. We will show you exactly what features matter most for under-cover storage.

Keep reading to discover the best options available today. Learn how to select a durable, space-saving toolbox that works perfectly with your existing cover. Prepare to organize your truck bed like a pro and finally reclaim your storage space!

Top Tool Box For Under Tonneau Cover Recommendations

No. 1
RealTruck TruXedo TL - TonneauMate | 1117416 | TonneauMate Toolbox - Fits Most Full Size Trucks, Except Flareside, Stepside or Composite Beds
  • EXPANDED STORAGE | This versatile storage box can be used as a mounted toolbox, cooler, or container. Its functional design allows for placement anywhere along the truck bed. The elevated mounting system allows for the use of the entire truck bed floor
  • Made in the USA with Global Materials
  • STRONG & SECURE | The durable construction of this storage box allows it to hold up to 200 lbs of cargo. A lock and key mechanism on top of the toolbox paired with a truck bed cover installed above it ensures that your valuables stay safe
  • EASY CLAMP INSTALLATION | This truck bed box is compatible with most full-sized trucks. For most models, the box clamps to the bed’s side rails underneath your truck bed cover.
  • WE'VE GOT YOU COVERED | TonneauMate is backed by a 2-year, no hassle guarantee. We are committed to providing you the best service at all times. Simply call our team. All TruXedo products are proudly made in the USA with globally sourced materials
No. 2
VEVOR Truck Bed Storage Box, Lockable Swing Case with Password Padlock, 6.6 Gal/25 L ABS Wheel Well Tool Box, Waterproof and Durable, Compatible with Ford F-150 2015-2021, Drivers Side (Left)
  • Enhanced Security: Keep your equipment secure with VEVOR's double-layered security system. Our innovative lockable box and unpickable combination padlock provide infallible protection against theft and tampering.
  • Unmatched Toughness: Crafted from high-quality ABS composite material, the VEVOR truck bed storage box combines lightweight design with rigidness and durability. It withstands strong wind, water, dust, and sun exposure, while its temperature resistance range (-68℉ to +158℉ / -20℃ to +70℃) ensures reliability in various conditions. Easy to clean and maintain!
  • Ultimate Accessibility: Mount the truck bed box on either side of the bed rail and experience instant access by simply pulling the latch to make it pivot 180 degrees. When not in use, fold it up to preserve precious cargo space. It remains secure even during high-speed driving.
  • Space-Saving Design: Maximize bed organization by storing up to 75 pounds of gear in the wheel well truck box. With a spacious storage capacity of 6.6 Gal/25 L, you can easily organize snacks, tools, gloves, bottled drinks, and more. Multiple compartments simplify organization.
  • Superior Compatibility: Designed for Ford F-150 2015-2021 Driver Side (Left), the wheel well tool case maintains a 3" clearance and works seamlessly with almost all tonneau covers. The box can be quickly installed using eyelets for secure attachment to the bed. Engineered to meet or exceed OEM equivalents, ensuring a perfect fit.
No. 3
UWS EC20503 Secure Lock 48-Inch Matte Black Heavy-Wall Aluminum Under Tonneau Cover Tool Box, RigidCore Lid
  • TONNEAU-COMPATIBLE. This under tonneau cover tool box measures 16-1/2 inches high and has an offset lid to conveniently fit under most truck bed tonneau covers and maintain full functionality
  • RIGIDCORE LID. This under tonneau tool box is built for maximum lid strength and security with patented RigidCore technology. The lid is filled with a solid foam that maximizes structural integrity and helps prevent binding
  • EXTRA-THICK ALUMINUM. UWS aluminum truck tool boxes for under tonneau cover are constructed with thicker aluminum compared to most aluminum tool boxes to provide superior strength. This matte black truck tool box features a one-piece tub
  • SECURE LOCK HANDLES. This under tonneau cover tool box is equipped with easy-to-operate, dual-locking twist handles that can be locked on either side of the truck. The handles are wide-spread for easier access from the sides of the truck
  • EASY TO INSTALL. UWS pickup truck tool boxes are available in several different sizes and styles to accommodate each unique truck and preference
No. 4
VEVOR Heavy Duty Aluminum Truck Bed Tool Box, Diamond Plate Tool Box with Side Handle and Lock Keys, Storage Tool Box Chest Box Organizer for Pickup, Truck Bed, RV, Trailer, 48"x15"x15", Black
  • Last A Lifetime: VEVOR truck tool box is constructed from lightweight yet durable aluminum alloy, featuring a diamond tread pattern and double-sided power coating process. This design helps to prevent rust, corrosion, and abrasion, ensuring long-lasting use for several years. Additionally, the tool box is equipped with upgraded corners to secure the packaging and prevent any damage or deformation during transportation.
  • Bulk-storage Toolbox: This spacious toolbox measures 48 x 15 x 15 inches, providing plenty of room for buckets, maintenance tools, fire extinguishing canisters, warning signs, and other items in your truck. It's versatile and can be used in pickups, trucks, trailers, RVs, and even at home. You no longer need to worry about misplacing small objects with this toolbox.
  • Nothing Is Getting In: Our truck toolbox is a must-have choice for your vehicle. It comes with an overhanging door that features a tight seal to prevent water from seeping in. This ensures that your box items remain dry and tidy, even in harsh rainy or snowy conditions.
  • Safety Comes First: Equipped with stainless steel locking mechanism and 2 exclusive keys, providing effective protection against theft. Additionally, its built-in design helps to reduce impact and scratches during driving, ensuring the longevity of your toolbox.
  • Lift with Ease: Features wider carrying handles on both sides, making the tool box is easy to grip even with gloves on. Men with larger hands will find it comfortable to carry without feeling crowded. Moreover, it comes with a gas strut that assists in opening the lid up to 110°, providing full access to all contents within the toolbox.
No. 5
CRAFTSMAN VERSASTACK 30 Gallon Quick-Access Rolling Tool Chest (CMST17870)
  • MAXIMIZE STORAGE CAPACITY – Store large tools with the 30-gallon storage capacity.
  • QUICK-ACCESS LID – Reach tools quickly with the half-lid top that allows access to contents without removing stacked VERSASTACK units or opening the chest lid.
  • IP54 RATED* – Help keep internal contents safe and dry in challenging conditions with dust and waterIP54 RATED* – Help keep internal contents safe and dry in challenging conditions with dust and water resistance (both chest lid and half-lid). resistance (both chest lid and half-lid).
  • USEFUL WORKSTATION – Stack VERSASTACK boxes on top in one of two directions, for a convenient workstation that helps maximize accessibility on the jobsite. TSTAK modules
  • ONE-HANDED OPERATION – Easily open the tool chest, even when your hands are full, with the QUICK-ACCESS LID
No. 6
FORWODE 48 Inch Truck Bed Tool Box Aluminum for Pickup RV Toolbox Truck Bed Toolboxes Heavy Duty Waterproof Truck Chest with Handle and Lock - Black
  • Dimensions: The truck tool box measures 48"(L) x 15"(W) x 15"(H). We offer a variety of sizes to choose from, so please purchase based on the actual storage space in your car to ensure that the toolbox is right for you.
  • Durable: This all-welded aluminum toolbox is designed to be lightweight and durable, making it easy to carry and store. Its diamond plate can increase grip and prevent slipping.
  • Organized Tool Storage: The truck tool boxes for bed of truck offer plenty of storage space for your tools and equipment, allowing you to say goodbye to clutter and disarray, and keep everything neatly organized.
  • Design Features: With handles on both sides, this trailer tool box offers enhanced portability. It also comes equipped with a lock and keys for added security.
  • Versatility in Utility: Whether the bed of a truck, the tongue of a trailer, or placed in an outdoor environment, the truck bed toolboxes adapt effortlessly to various settings. Its versatility allows for convenient placement or secure installation wherever required.
No. 7
YITAMOTOR 39 Inch Truck Bed Tool Boxes Heavy Duty Aluminum with Sliding Shelf,Diamond Plate ToolBox for Pick Up Truck RV Trailer, Chest Storage Organizer with Lock and Keys
  • UNIQUE DESIGN: Sliding shelf design creates extra space for storing small tools, screws, and other items so they can be easily found and improve work efficiency
  • DURABLE: This truck toolbox is constructed with high-density aluminum and non-slip surface while being highly resistant to oxidation, ensuring it maintains an attractive appearance and stable performance in harsh environments over time
  • SAFETY & CONVENIENCE: Sturdy lock keeps your tools safe and available, while the stainless steel handles on both sides allow for easy handling and removal from vehicle
  • WEATHER PROTECTION: This toolbox is designed with sealing strips and professional powder coating provides effective water and rust resistance, keeping tools dry and safe from wet environments
  • VERSATILITY: The toolbox features a wide range of applications such as being used for pickup trucks, trailers, RVs, and warehouses; Improve your storage game with this toolbox
No. 8
Buyers Products 1712240 Black Poly All-Purpose Storage Chest , 6.3 cu. ft, Made In The USA, Dent-Resistant Lockable Storage Box for Truck, Trailer, Dock, or Deck, High-Density Polyethylene
  • DURABLE POLYETHYLENE CONSTRUCTION: Lightweight yet rugged high-density ribbed polyethylene resists dents, corrosion, and harsh environments for long-lasting use
  • DOUBLE-WALL LID FOR SECURITY: Molded lid with reinforced double-wall design keeps contents protected and prevents warping, cracking, or easy access
  • LOCK-READY ZINC-PLATED HINGE: Built-in hasp fits standard padlocks or combination locks, adding theft protection with a rust-resistant design
  • MULTI-PURPOSE OUTDOOR USE: Ideal for trailers, truck beds, docks, patios, and decks — a secure solution for storing tools, gear, or outdoor equipment
  • PROUDLY MADE IN THE USA: Quality you can trust, built with American craftsmanship for truck upfitters, contractors, and serious outdoor storage needs

The Ultimate Buying Guide: Securing Your Gear Under the Tonneau Cover

A truck bed is great for hauling. But without protection, your tools can get wet or stolen. A toolbox that fits under your tonneau cover keeps your gear safe and dry. This guide helps you pick the best one for your truck.

Key Features to Look For

Size and Fit

The most important thing is size. You must measure your truck bed carefully. Check the space between the bed rails and the bottom of your tonneau cover. Some toolboxes are low-profile. Others might require a specific type of cover.

  • Width: Ensure it does not block your tailgate from closing fully.
  • Depth: Make sure it sits low enough for the cover to latch securely.
  • Length: Consider if you still need space for large items like lumber.

Access and Security

You need easy access to your tools. Look for strong, easy-to-use latches. Better toolboxes use gas struts or springs to help lift the lid. Security is key. Heavy-duty locks prevent theft. Make sure the locking mechanism is weather-resistant.

Storage Organization

A good toolbox is more than just a big box. Check for internal organization. Trays, dividers, and small compartments help you keep wrenches separate from sockets. This saves you time when you need a specific tool quickly.

Important Materials

The material affects durability and weight. Most high-quality truck toolboxes use metal or tough plastic.

Aluminum

Aluminum is very popular. It is strong but lightweight. This makes it easy to install and doesn’t hurt your truck’s hauling capacity much. Look for thick aluminum (like 0.050 inches or more) for better strength. Powder-coated finishes resist scratches and rust.

Steel

Steel is the toughest option. It offers the best security against break-ins. However, steel is heavier and can rust if the protective coating wears off.

High-Density Plastic (Polyethylene)

Plastic boxes are very weather-resistant. They never rust. They are often lighter and sometimes cheaper. Quality plastic boxes resist cracking in very cold or very hot weather.

Factors That Improve or Reduce Quality

What Makes a Toolbox Great?

High-quality boxes feature fully welded seams, not just bolted parts. This keeps water out better. Look for rubber gaskets that seal the lid completely. These gaskets stop dust and rain from getting inside.

What Lowers the Quality?

Cheap construction is a major problem. Thin metal bends easily. Plastic boxes made from weak material crack under stress. Poor quality latches often stick or break after only a few months of use. Always read reviews about how long the hardware lasts.

User Experience and Use Cases

How you use your truck changes what you need. Think about your daily routine.

The Weekend Warrior

If you only use your truck for occasional trips, a basic, durable aluminum box works well. You need space for tie-downs and maybe a shovel, but extensive internal organization might not be necessary.

The Contractor or Tradesperson

If you carry expensive power tools every day, security and organization matter most. You need heavy-gauge steel or aluminum with robust, dual-locking systems. Easy-access drawers are a huge time-saver on job sites.

Weather Protection

If you often drive in heavy rain or snow, superior weather sealing is non-negotiable. Some low-profile boxes compromise the seal to fit under low-slung covers. Test how easy it is to open the box when wearing gloves. That small detail really matters when you are cold.


10 Frequently Asked Questions (FAQ)

Q: Will a toolbox stop my tonneau cover from closing?

A: Only if you buy the wrong size. You must measure the height clearance between the bed floor and the bottom of your closed cover before purchasing.

Q: Are plastic toolboxes as secure as metal ones?

A: Generally, no. Metal toolboxes offer better resistance against forced entry. High-density plastic is very weather-resistant but can sometimes be pried open more easily.

Q: How do I install a toolbox under the cover?

A: Most models secure to the truck bed rails using mounting brackets. This is usually a simple bolt-on process. Some require drilling, but many are no-drill designs.

Q: What is “powder coating”?

A: Powder coating is a tough, protective layer baked onto metal. It makes the toolbox look good and prevents rust and scratches better than regular paint.

Q: Do I need to remove the toolbox to use my tonneau cover?

A: If the toolbox is correctly sized for under-cover use, you do not need to remove it. The cover should close right over the top of the box.

Q: What are gas struts used for?

A: Gas struts are like small shock absorbers. They help the heavy lid lift up smoothly and hold it open safely while you search for tools.

Q: Can I still haul large items like plywood?

A: If you choose a low-profile or crossover style box, yes. If you choose a full-length box, you will lose most of your bed space.

Q: How important is the gasket seal?

A: It is very important. The rubber gasket creates a barrier. It keeps rain, snow, and road dust from damaging your valuable tools inside.

Q: What is a “crossover” toolbox?

A: A crossover toolbox sits high across the width of the truck bed, usually right behind the cab. They are designed specifically to fit under most tonneau covers.

Q: Can I paint my aluminum toolbox?

A: Yes, but it is best to use paint made specifically for aluminum. If the box is already powder-coated, you must sand it first so the new paint sticks properly.

Leave a Comment