Best Underbody Tool Boxes For Trucks: Compare 10 Options

#1 · Best Overall

1. Buyers Products 1704310

• Dimensions: 48"L x 24"W x 24"H
• Material: Alloy Steel
• Material Type: Alloy Steel

Best for: High-capacity steel work storage.

Why it ranks #1: Its 48 × 24 × 24-inch dimensions and 14-gauge steel suit substantial work-truck storage; a compression latch and replaceable gasket system are listed.

A listed 356.5-liter capacity makes the Buyers Products 1704310 a high-volume underbody option for work crews carrying substantial equipment. Its 48 × 24 × 24-inch dimensions pair that storage space with 14-gauge black steel, a recessed drop door, and a stainless steel compression latch for secured access.

The recessed 12-gauge drop door and stainless steel compression latch provide a secure closure, while the continuous hidden hinge supports the door opening. A replaceable gasket system and corrosion-resistant powder coat are specified for weather-conscious, outdoor work-truck use. The 356.5-liter capacity accommodates more gear than compact boxes, but the 48 × 24 × 24-inch dimensions demand substantial clearance and a suitable mounting location.

Skip it if you have limited mounting clearance; the Buyers Products 1702305 measures 36 × 18 × 18 inches.

This Buyers Products box fits work trucks that need high-volume, lockable steel storage and have room for a 48 × 24 × 24-inch enclosure. Measure clearance and access before committing to its large footprint.

Listed on Amazon as: Buyers Products 1704310 Black Steel Underbody Truck Tool Box, 24x24x48 Inch

#2 · Largest Aluminum

2. VEVOR 48-inch Aluminum

• Dimensions: 48"L x 17"W x 18"H
• Material: Aluminum
• Material Type: Aluminum

Best for: Multi-location aluminum storage.

Why it ranks #2: The 48 × 17 × 18-inch aluminum box provides a long storage footprint, with a rubber sealing strip, T-handle latch, lock, and two keys.

A 48 × 17 × 18-inch aluminum body gives this VEVOR box room for maintenance tools or camping gear while keeping storage underneath a truck or trailer. Its stated installation options also include a camper rear or pickup rack, so it can serve more than one vehicle storage layout.

The rubber sealing strip is specified to create a tight seal when the box is closed, helping shield stored gear from water. A lock and two included keys add a way to secure contents, while the T-handle latch gives access at the door. Aluminum construction keeps the 48-inch box at a listed 37.8 pounds; its stated 13 kg capacity is an important limit when deciding what to store inside.

Skip it if you need to carry more than 13 kg; the Buyers Products 1704310 lists a 356.5-liter capacity.

Choose this VEVOR for truck, trailer, camper, or pickup-rack storage when its 48-inch length fits the mounting area. The stated 13 kg capacity makes it a better match for lighter gear than heavy tool loads.

Listed on Amazon as: VEVOR Underbody Truck Box, 48"×17"×18" Pickup Storage Box, Heavy Duty Aluminum Diamond Plate Tool Box with Lock and Keys, Waterproof Trailer Storage Box with T-Handle Latch for Truck, Van, Trailer

#3 · Steel Workhorse

3. Buyers Products 1702305

• Dimensions: 36"L x 18"W x 18"H
• Material: Alloy Steel
• Material Type: Alloy Steel

Best for: Steel work-truck storage.

Why it ranks #3: This 36 × 18 × 18-inch model uses 14-gauge steel and lists a stainless steel compression latch, gasket, and corrosion-resistant powder coat.

Fourteen-gauge steel gives the Buyers Products 1702305 a rugged enclosure for tools, parts, and supplies in work trucks, flatbeds, trailers, or underbody installations. Its 36 × 18 × 18-inch size offers a practical storage footprint, while a compression latch draws the recessed door against its gasket.

The stainless steel locking T-handle compression latch pulls the recessed drop door firmly against the gasket, helping reduce rattling during travel and protect contents from weather. A continuous hinge supports the door along its length, and the powder-coated steel finish is specified as corrosion-resistant. At 76 pounds, this is a substantial steel box; account for its weight and 36-inch length when planning installation and access.

Skip it if you need a lighter aluminum enclosure; the VEVOR UTTB-361416 is listed at 24.7 pounds.

This Buyers Products box suits work-truck and flatbed owners who want steel storage with a compression latch and recessed drop door. Its 76-pound listed weight and 36-inch length deserve attention when arranging installation.

Listed on Amazon as: Buyers Products 1702305 36 x 18 x 18 Inch Steel Underbody Tool Box

#4 · Lighter Aluminum

4. VEVOR 36-inch Aluminum

• Dimensions: 36"L x 14"W x 16"H
• Material: Aluminum
• Material Type: Aluminum

Best for: Compact aluminum underbody box.

Why it ranks #4: At 36 × 14 × 16 inches and 24.7 pounds, this aluminum option is a compact alternative with two keys and a stated 110-pound maximum recommendation.

At 36 × 14 × 16 inches, this VEVOR aluminum box fits a more compact storage footprint than larger underbody chests while still holding maintenance tools or camping equipment. Its listed maximum load recommendation is 110 pounds, and the lockable T-handle arrangement keeps stored items secured behind a sealed door.

A rubber sealing strip creates a tight seal when closed, helping protect stored items from water, while the aluminum body is described as rust-, corrosion-, and scratch-resistant for outdoor vehicle use. The lock and two keys add security without changing the compact 36-inch width. With a listed 110-pound maximum weight recommendation, it can carry a substantial tool load, subject to that stated limit.

Skip it if you need 18 inches of storage depth; the VEVOR 36 × 18 × 18-inch steel box provides that width.

Pick this VEVOR for a truck, trailer, camper, or pickup rack where a 36-inch aluminum enclosure fits and a 110-pound load limit is sufficient. Check the 14-inch depth against the gear you plan to store.

Listed on Amazon as: VEVOR Underbody Truck Box, 36"×14"×16" Pickup Storage Box, Heavy Duty Aluminum Diamond Plate Tool Box with Lock and Keys, Waterproof Trailer Storage Box with T-Handle Latch for Truck, Van, Trailer

#5

5. VEVOR 24-inch Steel

• Dimensions: 24"L x 12"W x 14"H
• Material: Cold Rolled Steel
• Material Type: Cold Rolled Steel

Best for: Weather-sealed compact steel box.

Why it ranks #5: The 24 × 12 × 14-inch galvanized steel box has a powder-coated finish, full-perimeter rubber gasket, T-handle, and two keys.

A full-perimeter rubber gasket and seamlessly welded body give this VEVOR steel box a weather-focused design in a compact 24 × 12 × 14-inch size. The galvanized steel construction has a powder-coated finish, while a lock and two keys provide secured storage for tools in a truck, van, SUV, or trailer.

The gasket seals around the door to help block rain and dust, and the welded body supports outdoor storage by reducing exposed seams. Galvanized cold-rolled steel with a powder-coated finish is specified for durability and resistance to rust and wear. Its 30 kg maximum weight recommendation gives a clear load boundary; the 24-inch width and 14-inch height make it a compact option when mounting space is constrained.

Skip it if you need a 36-inch-wide steel chest; the YRCHOFQU FL measures 36 × 18 × 18 inches.

This VEVOR suits truck, van, SUV, or trailer owners seeking a compact, weather-sealed steel compartment with a stated 30 kg load limit. Its 24-inch width and 14-inch height are the main fit boundaries.

Listed on Amazon as: VEVOR Underbody Truck Tool Box, 24 x 12 x 14 Inch Heavy Duty Steel Trailer Storage Box with Lock & Keys, Waterproof Trailer Storage Organizer Under Body Chest with T-Handle for Truck, Van, SUV, Black

#6

6. Weetron 48-inch Steel

• Dimensions: 48"L x 14"W x 16"H
• Material: Alloy Steel
• Material Type: Alloy Steel

Best for: Long steel gear storage.

Why it ranks #6: Its 48 × 14 × 16-inch steel body is described as fully welded and powder coated, with a lockable T-handle and keys.

A 48-inch length gives the Weetron underbody box an extended storage bay for tools, outdoor gear, or supplies used in camping, transportation, and construction. Its fully welded steel construction is specified for strength and impact resistance, with a black powder coating intended to resist water and corrosion.

The 48 × 14 × 16-inch body provides a long, relatively narrow storage shape, useful when the mounting area favors length over depth. Fully welded alloy steel is described as impact-resistant, while the powder coating is intended to protect against water and corrosion during outdoor use. A T-handle latch and keys provide lockable access, and the listed features include easy installation; confirm the available underbody clearance against its dimensions.

Skip it if you need 18 inches of storage depth; the Buyers Products 1702305 measures 36 × 18 × 18 inches.

The Weetron suits owners seeking a long steel compartment for tools or outdoor gear on a truck, utility tractor, or RV. Its 14-inch depth is the key fit boundary, so check whether bulky items will clear it.

Listed on Amazon as: 48 Inch Underbody Tool Box,Heavy Duty Underbody Truck Tool Box w/T-Handle Latch and keys for Pickup Truck,Utility Tractor,RV,Waterproof Tool Chest For Storage & Organization-48 × 14 × 16 inch

#7 · Two-Box Set

7. Vigorighter 24-inch Pair

• Dimensions: 24"L x 12"W x 14"H
• Material: Alloy Steel
• Material Type: Alloy Steel

Best for: Two-box compact steel setup.

Why it ranks #7: Two 24 × 12 × 14-inch steel boxes provide split storage; the listing describes welded seams and a powder-coated finish.

Two 24 × 12 × 14-inch steel boxes make the Vigorighter a practical option for splitting tools or supplies between separate storage points. Powder-coated sheet steel and fully welded seams are specified for rugged, weather-conscious use across trucks, trailers, RVs, ATVs, flatbeds, and other listed settings.

The two-box format can separate gear into smaller groups instead of consolidating everything in one chest, while each unit’s 24 × 12 × 14-inch dimensions suit a compact mounting area. The product description specifies fully welded seams to keep rain, dust, and grime out, and the rigid powder-coat finish adds corrosion resistance. A lockable T-handle latch secures each box; the listed maximum weight recommendation is 20 pounds.

Skip it if you need to store loads above 20 pounds per box; the VEVOR 24 × 12 × 14-inch steel box lists a 30 kg maximum.

This pair suits buyers who want compact steel storage split across a truck, trailer, RV, or flatbed. Each box has a 20-pound maximum weight recommendation, so match the load and mounting space to that limit.

Listed on Amazon as: 24 Inch Underbody Tool Boxes for Truck 2 Pack, 24 x 12 x 14 Inch Steel Under Body Storage Box with T-Handle Latch, Waterproof Heavy Duty Toolbox for Pickup Truck RV, Black (Pack of 2)

#8

8. COOLBAG 48-inch Pair

• Dimensions: 48"L x 18"W x 18"H
• Material: Alloy Steel
• Material Type: Alloy Steel

Best for: Two large steel compartments.

Why it ranks #8: The listing identifies two 48 × 18 × 18-inch steel boxes with T-handle locks and keys, though it supplies fewer construction details.

The COOLBAG listing combines a two-pack format with 48 × 18 × 18-inch dimensions and a steel construction, targeting buyers who need substantial underbody storage. Lockable, weathertight features and T-handle locks with keys are named in the title, giving the pair a secure-storage focus for trucks, trailers, RVs, and flatbeds.

Two boxes can divide tools and supplies into separate compartments, which may simplify sorting gear between work or vehicle uses. The stated 48 × 18 × 18-inch dimensions indicate a large footprint, so check available mounting space before choosing the pair. Alloy steel construction provides the listed material, while the product identifies lockable and weathertight features for securing contents and limiting exposure during vehicle use.

Skip it if you have room for only a 24-inch box; the VEVOR TB17-6B measures about 24 × 14 × 16 inches.

Consider the COOLBAG pair if you need multiple large steel compartments for a truck, trailer, RV, or flatbed. Its 48 × 18 × 18-inch dimensions call for ample underbody clearance and a mounting plan for both boxes.

Listed on Amazon as: 2 Pack Underbody Truck Tool Box, 48"x18"x18" Heavy Duty Steel Storage Chest with T-Handle Lock & Keys, Waterproof Under Mount Toolbox Organizer for Pickup, Trailer, RV, Flatbed, Powder Coated

#9

9. YRCHOFQU 36-inch Steel

• Dimensions: 36"L x 18"W x 18"H
• Material: Iron
• Material Type: Iron

Best for: Airtight iron equipment storage.

Why it ranks #9: This 36 × 18 × 18-inch iron box lists two keys and airtight, dustproof, and moistureproof features, but provides limited construction detail.

Airtight, dustproof, and moistureproof features distinguish this 36-inch YRCHOFQU box for buyers storing equipment where exposure to dust or damp conditions matters. Its 36 × 18 × 18-inch iron body offers space for power tools, recovery gear, chains, hoses, and straps, with a lock and two keys included.

The listed airtight, dustproof, and moistureproof features address different storage concerns for gear carried under a truck during transport. Heavy-duty iron construction is described as helping withstand impacts and daily wear, while the 36 × 18 × 18-inch dimensions provide room for bulky equipment. The box is lockable and comes with two keys; its iron material and substantial dimensions should be considered when planning mounting and handling.

Skip it if you prioritize a lighter aluminum box; the VEVOR UTTB-361416 is aluminum and listed at 24.7 pounds.

Choose this YRCHOFQU for equipment storage where its listed sealing features and 36 × 18 × 18-inch space fit the job. Its iron construction is a consideration for anyone prioritizing lighter handling during installation.

Listed on Amazon as: 36" Underbody Truck Tool Box, Heavy-Duty Steel, Lockable

#10

10. VEVOR 24-inch Aluminum

• Dimensions: 24.02"L x 13.98"W x 15.94"H
• Material: Aluminum
• Material Type: Aluminum

Best for: Lightweight compact aluminum box.

Why it ranks #10: This 24 × 14 × 16-inch aluminum option weighs 13.2 pounds and includes two keys, but its smaller dimensions limit storage capacity.

At 13.2 pounds, this 24 × 14 × 16-inch VEVOR aluminum box offers compact underbody storage with a notably light listed weight. A rubber sealing strip, lockable stainless steel latch, and two keys support weather-conscious, secured storage for tools in trucks, vans, trailers, or other listed vehicle locations.

The rubber sealing strip is specified to form a tight seal when closed, helping protect stored gear from water. Thickened aluminum alloy and a scratch-resistant surface pattern are described as improving durability, while the lock and stainless steel solid latch help secure contents. Its approximately 24 × 14 × 16-inch dimensions suit a smaller mounting area, and the listed 30 kg capacity sets a clear load limit.

Skip it if you need a larger 48-inch storage bay; the VEVOR UTTB-481718 measures 48 × 17 × 18 inches.

This compact VEVOR fits buyers prioritizing a light aluminum box for tools in a truck, van, or trailer. Its 30 kg capacity and approximately 24-inch length set the limits for load size and the gear it can hold.

Listed on Amazon as: VEVOR Underbody Truck Box, 24" x 14" x 16" Pickup Storage Box, Heavy Duty Aluminum Diamond Plate Tool Box with Lock and Keys, Waterproof Trailer Storage Box with T-Handle Latch for Truck, Van, Trailer