AutomotiveExterior Accessories

The 9 Best Truck Underbody Tool Boxes in 2020

A truck underbody toolbox is a box you install to either a flat surface or the underbody of your pickup truck. Its purpose is to help you store your tools of the trade safely and securely, instead of them floating around in the cab of your pickup.

The variety online is enormous, with many styles, colors, and materials from which to choose. If you are in the market for a new truck underbody tool box, you may find what you are looking for in these products below.

9. Buyers Products Steel Underbody Truck Box

If you are looking for a premium quality truck underbody toolbox that won’t cost the earth, then set your sights on this box from Buyers Products. Not only does this box enable you to keep more change in your back pocket, but it’s the epitome of decent quality. As long as the shippers take proper care with it, you will be amazed at the quality and how long it’s going to last you.

It has a T-handle latch to ensure it’s secure every time you use it, as well as being sized generously at 18 x 36 x 18 inches. There is more than enough space for all the tools of the trade. What’s more, this truck underbody toolbox features 14-gauge steel to last the distance, coated with black powder coating to resist rust and general wear and tear. It’s also water-resistant, helping to keep the items in the box as secure as possible. If you do find the seal perishes, the gasket seal system is replaceable for your convenience.

This robust, affordable, and well-designed truck underbody tool box will fit comfortably on any vehicle flat surface or under the bed. When it comes to value for money, it doesn’t get much better than this.


  • T-handle latch
  • 18 x 36 x 18 inches
  • 14-gauge steel body
  • Black powder coating
  • Water-resistant
  • Under-bed or flat surface mountable
  • A replaceable gasket seal system
  • Aircraft-grade cables


  • A significant variety of sizes to suit different vehicles
  • Affordable price tag
  • Robust and built to last
  • Sleek design
  • Seals firmly in place
  • Keeps the water and weather out
  • Doesn’t rust
  • You can mount it on a flat surface or under the truck bed


  • It has two doors instead of one, making it challenging to get large tools in and out
  • The door doesn’t seal as well as it should
  • The lock binds which makes it challenging to lock and unlock it

8. Buyers Products Underbody Truck Box

When the time comes to purchase a truck underbody toolbox, it’s in your best interests to find one that’s going to be both suitable for your needs and priced affordably. You may discover this box ticks all the boxes. Even though there are some issues with the powder coating not being thick enough for adequate protection, it’s priced right and can get the job done.

When it arrives, you can install it either flat on your vehicle, or under the bed. The mounting process is also straightforward so that you won’t have any problems. It’s also robust to handle daily wear and tear no matter where you put it, all thanks to its 14-gauge steel construction, powder-coating, and aircraft-grade cables.

Many people worry about the weather when they purchase a truck underbody toolbox, but with this model, you don’t have to. Thanks to its gasket system, which you can replace, it remains water-resistant to protect whatever you keep inside your 12 x 14 x 18-inch box. Affordable, convenient, and suitable for a range of truck beds, this truck underbody toolbox is bound to appeal to many.


  • 14 x 18 x 12 inches
  • T-handle latch
  • 14-gauge steel construction
  • Powder-coated finish
  • Flat or under-bed mountable
  • Replaceable gasket sealing system
  • Aircraft-grade cables


  • Affordable to buy
  • Robust construction to handle wear and tear
  • Spacious for plenty of tools
  • Protects items from the weather
  • You can install it under the truck bed or on a flat surface
  • It’s available in a sleek,black design
  • You can choose from different dimensions
  • Convenient handle system
  • Sealed gasket you can replace


  • There is not enough powder coating to provide adequate protection

7. Yaheetech Aluminum Tool Box

Yaheetech Aluminum Tool Box
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If a lightweight but strong truck underbody toolbox is what you require, then it might be time to invest in this box from Yaheetech. Many people say this box is too lightweight, but given its aluminum construction, that’s what you expect and want. Secure it in place and use it to house your goods, you will be as happy as Larry!

One thing that doesn’t sit nicely with consumers about this truck underbody toolbox, however, is that the aluminum is thin. While it’s going to handle daily wear and tear, the bouncing around on truck bed may eventually wear it away. What’s more, unless you coat the steel components, it’s going to rust with the slightest bit of moisture. The main parts are corrosion-resistant and weather-resistant for your peace of mind.

If you want to keep items secure in a truck underbody toolbox, this one will deliver. It has a seal-ring design to stop weather getting into the box, coupled with the overlapping lid. The chrome finish also gives it a nice finish, standing out from the crowd on the deck of your truck. If you want to move it around, you will have no problems doing so. It comes with side handles, reinforcement ring loops, and a riveted design for added toughness.

The closure system with a built-in lock and two keys also offers additional security if you want to deter light-fingered members of society. This truck underbody toolbox may be worth a closer look – even though it has a few faults.


  • Truck bed storage
  • 30 x 13 inches
  • Aluminum construction
  • Corrosion-resistant
  • Weather-resistant
  • Overlapping lid
  • Seal ring design
  • Key closure system
  • Chrome finish
  • Reinforcement ring loop
  • Side handles
  • Built-in lock
  • Two keys
  • Riveted design


  • It can handle most weather
  • Works beautifully with any style of truck
  • It comes with two keys
  • Once you lock it, everything inside it is secure
  • Stylish design
  • Affordable price tag
  • Generous size
  • Robust construction


  • The steel parts rust if you don’t coat them with primer and paint
  • Too lightweight
  • The aluminum is thin

6. Buyers Products Toolbox

Even though this truck underbody toolbox doesn’t come with the most affordable price tag, its long list of features will soon make you realize that it’s worth every penny. If you asked for strength, you get it in this truck underbody toolbox from Buyers Products.


  • 14-gauge steel body
  • Two size options
  • Black powder coating
  • Recessed drop door
  • Hidden hinge
  • Diecast compression latch system
  • Three-point locking system
  • Aircraft-grade cables
  • Replaceable gasket sealing system
  • Made in the United States


  • Robust and built to last
  • Made in America, which matters to some people
  • You can replace the seal if it perishes
  • The locking component is robust
  • The hinge is hidden away from the elements
  • The drop door is convenient for enabling you to store large tools


  • Expensive to buy
  • The powder coating layer is thin

5. Buyers Products Company Diamond Underbody Truck Box

A huge problem that many business owners and contractors face is that their truck underbody toolbox gets scratched dented, and ruined. Daily wear and tear can take its toll, and even if you spend a lot of money, you can’t guarantee you’ll get a truck underbody toolbox that handles a lot of pain. However, if you buy this one, you can rest assured it will.

Rather than feature regular powder-coated aluminum, this one comes with 100-inch thick diamond tread aluminum. Therefore, as you’re trundling down the road, you don’t have to worry about any dents and damage along the way. It’s also resistant to corrosion, lousy weather, and has a high-quality gasket sealing system you can replace once it begins to perish.

When it comes to tool storage, you will love the setup. It has two drawers to handle a range of different tools and items – both of which sit upon 100-pound rated drawer slides. You can even lock the draws to protect your items from theft. If the time has come to upgrade your truck underbody toolbox, this one is going to be a hot contender.


  • 20 x 24 x 18 inches
  • 100-pound rated drawer slides
  • Aircraft-grade cables
  • Replaceable gasket sealing system
  • Corrosion resistance
  • 100-inch thick diamond tread aluminum
  • Weather resistance
  • Flat or under-bed mountable


  • Two drawers to separate your tools
  • Heavyweight to remain strong
  • Very durable
  • Entirely resistant to weather
  • It locks to protect your items from theft
  • You can mount it on a flat surface or the underside of your truck
  • It won’t rust
  • The diamond tread protects it from dings
  • You can replace the gasket system
  • The hinges are hidden


  • Expensive to buy

4. White Steel Underbody Truck Box

Even though this white truck underbody toolbox is going to get dirty far quicker than a black one, that doesn’t make it any less suitable for your needs. Whether you’re a contractor, farmer, or someone in need of secure storage for your tools, this truck underbody toolbox will be of assistance.

When you buy it, you can immediately mount it to a flat surface or the underside of your truck, before using it to your heart’s content. It’s going to be a breath of fresh air not to have to worry about damage, either. It’s built to withstand a lot of pain thanks to its 14-gauge steel body, weather-resistant powder coating, hidden hinge, and recessed drop door. Buyers Products has taken every precaution to ensure it’s fit for purpose.

This truck underbody toolbox also has two latches to help keep your items secure, a stainless-steel lock and latch, and 15 size options to suit everyone. Whether you want a large or small truck underbody toolbox, there’s something for everyone! This box is costly – several hundred dollars’ more than other brands, but given how robust it is, you will not mind at all.


  • 15 size options
  • White color scheme
  • Two latches
  • 14-gauge steel body
  • Weather-resistant
  • White powder coating
  • Recessed drop door
  • Hidden hinge
  • Under bed or flat surface mounting options
  • Stainless steel lock and latch


  • Strong to handle daily use
  • The lock protects your items from theft
  • Thick metal body
  • It can manage the weather
  • The powder coating stops it from rusting
  • You can mount it in two ways
  • It has two latches to prevent it from opening accidentally


  • Expensive to buy
  • White gets dirty quickly

3. Xtremepower US Crossbed Trailer Storage Box

It can be a challenge to find a truck underbody toolbox that caters for long tools, especially as the market is full of options for broader, shorter items. That’s where this truck underbody toolbox from XtremepowerUS comes in. Known for a full range of outdoor items, this manufacturer knows what you need, and how to give it to you.

Their truck underbody tool box features robust aluminum, but instead of being shaped more like a safe, it’s long and skinny. You will never have a problem fitting all the tools of the trade within. Its 69 x 60 x 11-inch measurements will more than impress.

However, there’s more to this truck underbody toolbox than meets the eye. For added convenience, it has a hydraulic lid with a reinforced brace to close with precision every time. However, the aluminum in this area tends to be thinner, which can cause it to warp and not shut securely.

The pickup truck style of this box is also going to impress, as will the self-adjusting strikers, thick diamond texture to remove the risk of dents and prangs, and the effortless installation process. Finally, sealing the deal is the price tag. This truck underbody toolbox is several hundred dollars’ cheaper than its counterparts, making it more than suitable for your business or personal truck.


  • Aluminum body
  • 69 x 60 x 11 inches
  • Hydraulic lid
  • Self-adjusting strikers
  • Reinforced lid brace
  • Pickup truck style


  • Plenty of storage space
  • The exceptionally affordable price tag
  • Thick diamond texture aluminum
  • Ideal for long tools and items
  • Effortless to install onto the bed of a truck
  • The lid locks into place for the protection of your goods


  • The lid can warp and not seal properly

2. Diamond Tread Underbody Truck Box

If you’re tired of carrying all the tools of the trade inside the cab of your pickup truck, potentially creating a hazard and projectile in an accident, then you may like to invest in a truck underbody toolbox from Buyers Products. Even though it’s a few hundred dollars of which you may not have budgeted, it could save your tools from braking – or even your life in an emergency. Remove all those heavy, cumbersome tools, and put them safely and securely in this truck underbody toolbox.

It features a barn door style with two doors that open out, with no center post to annoy you. Therefore, it doesn’t matter how big your tools are; they will fit nicely within the 18 x 18 x 36-inch box. If they don’t, you can choose one of the other size options too.

The thickness of the diamond tread aluminum coupled with the corrosion-resistant aspect makes this truck underbody toolbox one of the best on the market. It won’t dent or get hit as effortlessly as others on the market, nor will it rust or wear away to nothing. This truck underbody toolbox also has side hinges that are hidden, ¼-inch thick pins within them, and a robust diecast compression latch system. Once you secure your tools inside the box, any thief will find it exceptionally difficult to get them out. Choose from a left or right handle mount and install this box on the bed of your truck right away.


  • Barn door style
  • 18 x 36 x 18 inches
  • Corrosion-resistant materials
  • 100-inch thick diamond tread
  • Side hinges
  • ¼-inch pins
  • Hidden hinge
  • Three-point lock
  • Diecast compression latch system
  • Right or left handle mount


  • It doesn’t have a center post to get in the way
  • The doors swing outward for convenience
  • The diamond pattern gives it strength and durability
  • Affordable to buy
  • Six size options to suit
  • The lock system is robust and hard to break
  • Ideal for the underbody of your truck
  • Suits a range of tools and items


  • It doesn’t come with bolt holes for installation. You have to drill these yourself.

1. Black Poly Underbody Truck Tool Box

When you’re looking for a truck underbody toolbox, you’ll most likely discover that a lot of them are aluminum. If you live near a coast with a lot of salty air, such materials are less than ideal. That’s why you may like the look of this truck underbody toolbox from Buyers Products.

Even though it functions the same as aluminum models, it incorporates high-density polyethylene instead. It’s as strong as aluminum but won’t succumb to the elements as severely. Both the door and lid also have a double-wall setup, meaning they are far stronger than one layer of polyethylene alone.

However, that’s not all that’s different and intriguing about this truck underbody toolbox. It features a robust and recessed three-point locking latch, stainless-steel compression, and a drop door. Everything will be safe and secure in this truck underbody toolbox. It doesn’t dent, rust, rot away, or do anything it shouldn’t. Instead, you can install it with ease on the underbody of your pickup then load it full of items you want to keep secure.

If there were anything to complain about, it would be the weather stripping. Before long, you may need to replace it. It can perish quickly, removing the weather resistant components and letting moisture into your truck underbody toolbox. Aside from this, this box is an excellent option for many people wanting to step away from aluminum.


  • Three sizes
  • Dent-resistant
  • High-density polyethylene
  • Double-wall door
  • Double-wall lid
  • Drop door
  • Stainless-steel hinge pin
  • Recessed three-point locking latch
  • Stainless-steel compression latch system


  • Affordable to buy
  • Lighter than aluminum
  • As strong as metal
  • It won’t dent
  • Robust locking system
  • Small enough for most truck beds
  • It won’t succumb to the elements
  • Double walls for additional durability


  • The weather stripping is inferior
  • It can get wet on the inside

Considerations for Purchasing a Truck Underbody Tool Box

If you’re tired of your tools of the trade taking up room in your pickup truck, then you may wish to consider buying a truck underbody toolbox. Unfortunately, it can be quite a significant investment, with a lot of room for disappointment as well. Take note of these points below before you get your wallet out.

  1. Size

    Think about all the tools you have piled in the back of your pickup truck. You can’t pick any truck underbody toolbox and hope it will do the trick. Put your tools into a pile and measure them. You can then compare those measurements to one of the many boxes on the market to make sure you have plenty of room to spare.

  2. Construction

    Most truck underbody tool boxes take a hammering – all because they are out in the elements all the time. Don’t settle for less than the best materials. Aluminum is strong, lightweight and durable,and polyethylene is an excellent substitute if you prefer it to metal.

  3. Price

    Finally, think about how much you want to spend. Set a budget and stick to it. Truck underbody tool boxes vary by hundreds of dollars, but the quality doesn’t deviate to the same degree. It’s okay to opt for the most affordable truck underbody toolbox on the market but ensure the quality and features are on par with other more expensive options.

  4. Weather

    Because your truck underbody toolbox is going to spend most of its time outside, weather-proofing is a must. Bare steel will rust away without protection, and if you don’t have the best gasket seals, your tools and items will get wet too. Read the reviewer comments and make sure the box you pick will handle all weather.


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