If you need tougher, easier-to-reach storage, side mount truck bed tool boxes are a smart upgrade. They keep tools organized without eating up floor space in the bed.
Below, we focus on practical choices that balance capacity, durability, and security for work trucks, pickups, and trailer setups.
Best 10 Side Mount Truck Bed Tool Boxes Picks for 2026
Heavy-Duty Aluminum Storage
VEVOR 48" Black Truck Tool Box
- 48 x 15 x 15-inch aluminum chest
- Water-resistant seal and locking keys
- Gas strut lid opens to 110°
Best For: Owners who want a large, weather-resistant lockable chest
Topsider Rail-Mount Storage
Buyers Products 72" Black Aluminum Box
- Rail-mounted topsider keeps bed space open
- Dual drop doors for easier access
- Locking T-handles resist weather and theft
Best For: Work trucks needing rail-mounted storage with maximum bed space
Side-Mount Steel Access
- Direct rail-mount side access
- Steel build with dual powder coating
- Gas struts and locking latch
Best For: Truck owners who want clear bed space and quick side access
Compact Aluminum Cargo Box
VEVOR 48" Silver Truck Bed Box
- 48-inch aluminum box with tread pattern
- Seamless welding and rubber seals
- Lock & key plus padlocks for security
Best For: Drivers needing a compact, weather-resistant tool box
Long-Bed Storage Pick
60 Inch Side Mount Truck Tool Box, Aluminum, Silver
- 60" x 13" x 14" capacity
- Welded 0.058-inch aluminum tub
- Lockable stainless steel handle
Best For: Drivers needing a large, secure side-mounted storage box
Compact Utility Choice
36 Inch Side Mount Truck Tool Box, Black
- Space-saving side mount design
- 0.058-inch heavy-duty aluminum
- Gas strut for smooth lid action
Best For: Drivers wanting a compact, weather-resistant bed box
Side-Access Value Pick
Aluminum 36 Inch Side Mount Tool Box Black
- Truck-side access design
- Welded 0.058-inch aluminum
- Push-button lock handle
Best For: Quick-access storage in a compact side-mounted box
Dual-Pack Space Saver
- Pack of 2 for expanded storage.
- Side rail design preserves bed space.
- Lockable aluminum build with gas strut lid.
Best For: Shoppers wanting two long side-mount boxes and extra bed space
Compact Side Rail Storage
- Slim 60 x 8 x 14-inch footprint.
- Textured aluminum with corrosion-resistant 5 bar tread.
- Lockable lid with 2 keys included.
Best For: Drivers needing a narrow lockable side-rail storage box
Compact Bed-Side Organizer
- Compact 36 x 12 x 12-inch size.
- Lockable with stainless steel latches and two keys.
- Gas spring lid and rust-resistant aluminum build.
Best For: Smaller trucks or users wanting a compact side-mount box
Heavy-Duty Aluminum Storage – VEVOR 48" Black Truck Tool Box
If you want side mount truck bed tool boxes that prioritize capacity, weather protection, and simple access, this VEVOR aluminum chest is a practical fit. Its 48-inch body gives you ample room for tools and roadside gear, while the sealed lid and lockable design help keep contents protected in transit.
Best For: Pickup, truck, RV, or trailer owners who need a large lockable storage chest with weather resistance.
Pros:
- Lightweight aluminum alloy construction with a diamond tread pattern and corrosion-resistant coating
- Large 48 x 15 x 15-inch size with 177-liter capacity for bulky tools and supplies
- Overhanging door seal helps block water from entering in wet weather
- Stainless steel locking mechanism and two keys add theft protection
Cons:
- Large size may be more box than smaller trucks need
- Listed as a chest-style box rather than a dedicated rail-mounted side mount design
This is a straightforward storage upgrade for buyers who want a roomy, durable box with strong weather resistance and easy lift assist. The 110-degree gas strut opening and wide handles make it more convenient to use, especially when loading heavier items.
Topsider Rail-Mount Storage – Buyers Products 72" Black Aluminum Box
For buyers comparing side mount truck bed tool boxes, this Buyers Products topsider is built to mount along compatible truck bed rails and keep the bed floor open. The dual-drop-door layout makes it easier to reach frequently used tools without giving up cargo space below.
Best For: Work trucks, pickups, flatbeds, and utility bodies that need rail-mounted access and maximum bed space.
Pros:
- .100-inch diamond tread aluminum construction for corrosion resistance with lower weight
- Dual recessed drop doors provide access across the 72-inch cabinet
- Die-cast locking T-handles help secure tools from theft, dust, moisture, and road spray
- Includes mounting hardware plus optional J-hooks and side-rail pads for no-drill setup
Cons:
- Requires compatible rail fit and clearances, so installation planning matters
- At 72 inches long, it may be too large for shorter beds or compact setups
This is the most work-truck-focused option in the group, especially if you want rail-mounted storage that does not eat into your bed space. The fully assembled build and weather-resistant design make it a strong candidate for demanding jobsite use.
Side-Mount Steel Access – 34-Inch Truck Bed Tool Box
This side mount truck bed tool box is designed to attach directly to your truck bed rails, leaving the floor clear for larger cargo. The side-facing layout is especially useful when you want quick access from outside the vehicle instead of reaching across the bed.
Best For: Truck owners who want a rail-mounted side box with easy outside access and a clear bed floor.
Pros:
- Direct side-mount design keeps the bed floor open for hauling larger loads
- Heavy-duty steel construction with dual powder coating for rust and corrosion resistance
- Stainless locking latch with two keys adds security
- Dual gas struts support smooth, one-handed lid operation
Cons:
- Steel build is heavier than aluminum alternatives
- 34-inch size may be limiting for users with lots of bulky gear
If easy side access matters more than maximum box length, this is a strong practical pick. The combination of steel construction, locking hardware, and gas struts makes it a solid everyday utility box for work or travel.
Compact Aluminum Cargo Box – VEVOR 48" Silver Truck Bed Box
If you need a lighter-duty option among side mount truck bed tool boxes, this VEVOR aluminum bed box focuses on compact storage, weather sealing, and portability. Its 48-inch length and sealed construction make it a simple way to organize tools and keep them protected from moisture.
Best For: Drivers who want a portable, weather-resistant aluminum box for tools, travel gear, or jobsite essentials.
Pros:
- Aluminum alloy construction with tread patterns for added strength
- Dual sealed protection with seamless welding and rubber sealing strips
- 101-liter capacity offers organized storage in a relatively compact footprint
- Latch and padlocks provide added security during transport
Cons:
- Lower listed payload per item than heavier-duty utility boxes
- More compact storage volume than larger job-truck options
This box makes sense if you want a clean, portable storage solution rather than the biggest possible chest. It is best suited to buyers who value weather protection and easy organization over maximum hauling capacity.
Long-Bed Storage Pick – 60 Inch Side Mount Truck Tool Box, Aluminum, Silver
If you want side mount truck bed tool boxes with maximum storage, this 60-inch aluminum unit is built for hauling tools without taking up much of your bed. The one-piece welded 0.058-inch aluminum tub is designed to be lightweight yet sturdy, while the lower-sitting side mount layout helps preserve usable space in the truck bed.
Best For: Truck owners who need a long, secure side-mounted box for larger tool loads and want a lower-profile fit in the bed.
Pros:
- Large 60″ x 13″ x 14″ storage area for tools and equipment
- Welded 0.058-inch aluminum construction for a lightweight, sturdy build
- Lockable stainless steel handle adds security
- Rigidcore lid opens 90 degrees for easier loading and unloading
Cons:
- Single-compartment layout may not suit users who want organization dividers
- Large size is best suited to trucks with enough side-bed room
This is a straightforward choice if you want a durable, weather-resistant side mount box with generous capacity and a secure latch. Its size and low-sitting placement make it especially practical for keeping the bed organized while still carrying bulkier gear.
Compact Utility Choice – 36 Inch Side Mount Truck Tool Box, Black
For shoppers comparing side mount truck bed tool boxes that save space, this 36-inch aluminum model is a compact option with practical everyday storage. It sits on the truck side rails to leave more room in the bed, and the weatherproof seal line helps keep water out of the box.
Best For: Drivers who want a smaller side-mounted box for tools, job-site gear, or occasional camping supplies.
Pros:
- Space-saving side mount design leaves more room in the truck bed
- Heavy-duty 0.058-inch aluminum construction
- Weatherproof seal line helps resist water intrusion
- Gas strut supports smooth lid opening and closing
Cons:
- 36-inch size offers less total storage than longer side mount boxes
- Single compartment limits internal organization options
This box makes sense if you need a tough, secure storage solution without giving up much bed space. Its compact footprint and smooth-opening lid make it a practical pick for everyday tools and smaller gear loads.
Side-Access Value Pick – Aluminum 36 Inch Side Mount Tool Box Black
This 36-inch side mount option is built for direct truck-side access, making it a practical pick among side mount truck bed tool boxes when you want tools within reach. The welded 0.058-inch aluminum tub is paired with a push-button lock handle, and the design is offered in multiple lengths if you need a different fit.
Best For: Truck owners who want quick side access to tools in a compact, lockable aluminum box.
Pros:
- Truck-side access keeps tools reachable without using bed space
- Welded 0.058-inch aluminum construction
- Lockable push-button handle adds security and convenience
- Available in 36″, 48″, and 60″ length options
Cons:
- Listed as not water resistant, so it may not suit wet-weather storage needs
- Single-compartment design offers limited organization
If easy side access matters more than maximum weather protection, this box is a solid utility-focused choice. It keeps the design simple, secure, and adaptable with multiple size options for different truck setups.
Dual-Pack Space Saver – 60-Inch Side Mount Tool Boxes
If you want side mount truck bed tool boxes that maximize storage without taking over the bed, this 2-pack offers a lot of capacity. Each 60-inch aluminum box sits on the side rails, leaving room for larger cargo while still giving you a secure place for tools, chains, jacks, camping gear, and other job-site essentials.
Best For: Buyers who need two long, space-saving side mount boxes for a truck bed, trailer, or work setup.
Pros:
- Side mount design keeps the main truck bed open for other cargo.
- Heavy-duty 0.058-inch aluminum construction for durability.
- Weatherproof seal line helps resist water intrusion.
- Gas strut lid opens smoothly to 90 degrees for easier loading.
Cons:
- No mounting accessories are included.
- No instruction manual is included.
- Large size may be more box than some smaller setups need.
This is a practical pick if you need maximum side-mounted storage and like the idea of getting two matching boxes in one purchase. The lock, latch, and gas strut add convenience, while the aluminum build keeps the design focused on utility.
Compact Side Rail Storage – 60-Inch Aluminum Bed Box
This side mount truck bed tool box is built for drivers who want accessible storage without sacrificing bed space. The 60 x 8 x 14-inch profile uses a narrow side-mount layout, making it a good fit for tools and gear that need quick access along the truck bed rail.
Best For: Truck, trailer, and utility users who want a slim lockable box for side-rail storage.
Pros:
- Side mount design helps maximize usable truck bed space.
- Textured aluminum construction is built for durability.
- 5 bar tread is corrosion-resistant and suited to harsh weather.
- Lock and 2 keys add basic security for stored items.
Cons:
- Only one box is included.
- Narrow 8-inch width limits bulkier storage.
- Listing does not mention gas struts or mounting accessories.
For buyers who want a slimmer solution in the side mount truck bed tool boxes category, this model is straightforward and practical. Its narrow footprint and lockable aluminum build make it a sensible storage add-on for many work vehicles and trailers.
Compact Bed-Side Organizer – 36-Inch Side Mount Box
For smaller truck setups, this side mount truck bed tool box focuses on quick access and full bed usability. The 36-inch aluminum body mounts directly on the bed rail, keeping the cargo area open while still providing a dedicated spot for tools and everyday work gear.
Best For: Owners who want a smaller, lightweight side-mount toolbox with simple lockable storage.
Pros:
- Side-mount design keeps the full truck bed free for loading.
- Lockable stainless steel latches come with two keys.
- Gas spring support helps the lid open and close smoothly.
- Rust- and corrosion-resistant aluminum construction adds durability.
Cons:
- Smaller 36-inch size offers less storage than longer boxes.
- Only one box is included.
- May not suit users needing heavy-duty, large-capacity storage.
This is a sensible choice if you want a compact side-mount box without giving up the bed for larger cargo. Its lightweight aluminum build, locking latches, and assisted lid make it a convenient everyday storage option.
How We Picked the Best Side Mount Truck Bed Tool Boxes
We prioritized fit, build quality, lock security, and weather protection, along with sizes that make sense for common pickup beds and trailer rails. We also looked for boxes that offer usable interior space without interfering with tie-downs, wheel wells, or bed access.
Quick Comparison
Shorter 36-inch boxes are better for compact storage, lighter weight, and easier installation. Mid-size 60-inch models offer a stronger balance of capacity and clearance, while longer 72-inch options are best for users who want maximum storage along the bed side. Black finishes can blend in better and often hide scuffs more easily, while silver aluminum versions may better match bare-metal or utility-focused setups.
Key Buying Factors for Side Mount Truck Bed Tool Boxes
Fit and Dimensions
Measure your bed length, rail height, and side clearance before buying. For Side Mount Truck Bed Tool Boxes, the published outside dimensions matter more than overall capacity because wheel wells, stake pockets, and tonneau covers can affect installation.
Material and Construction
Aluminum is popular because it keeps weight manageable and resists corrosion. Look for reinforced lids, tread or diamond plate styling, and welded or well-finished seams if you plan to carry heavy tools or work in harsh weather.
Security and Access
A reliable latch and keyed lock are essential if you leave tools in the truck. Side handles, smooth lid opening, and a low enough profile for comfortable reach also make daily use easier.
Weather Resistance
Weather stripping and tight lid closure help keep rain, dust, and road spray out. If you work year-round or park outside, this matters as much as size.
Who Should Buy Which Side Mount Truck Bed Tool Boxes?
Choose a 36-inch box if you want compact, affordable storage for hand tools and recovery gear. Pick a 60-inch model if you need more room for power tools, straps, or jobsite essentials. Go with a 72-inch box if you want the most storage and have the bed space to support it.
For buyers comparing Side Mount Truck Bed Tool Boxes, the best choice usually comes down to a simple tradeoff: maximum storage versus easier fit and access. Match the box size to your truck, then focus on lock quality, seal quality, and how often you need to reach your tools on the go.