A strong fifth wheel tool box keeps gear enclosed while leaving room for the trailer coupling, making it a practical choice for truck owners who tow and need bed storage. The UWS EC20093 leads this group with a stated low-profile fifth-wheel design, 6.1-cubic-foot capacity, extra-thick aluminum, and a foam-filled RigidCore lid. Other options suit different priorities: Dee Zee offers a wide chest with a black finish, while the UAA V-shape box has rear-opening doors for access near the tailgate.
The listings vary considerably in how much detail they provide, so treat dimensions and compatibility as items to verify before ordering. Compare the stated capacities, weights, materials, and access features against your truck bed and hitch arrangement rather than relying on the product name alone.
The UWS EC20093 58-Inch Box is the strongest all-around pick because it is specifically described as providing fifth-wheel coupling clearance and pairs a 6.1-cubic-foot capacity with extra-thick aluminum and a RigidCore foam-filled lid. It is lockable and has a diamond-plate surface; UWS also lists a MicroSeal gasket to resist dust, debris, and moisture. Confirm the box dimensions and hitch clearance for your truck before purchase, since the supplied listing does not give a complete dimensional fitment chart.
Our Top Picks
Best OverallIts fifth-wheel clearance design, 6.1-cubic-foot capacity, extra-thick aluminum, RigidCore lid, and stated MicroSeal gasket make it a well-detailed fit.
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Best Silver ChestThis lockable fifth-wheel chest uses 0.056-inch Brite-Tread aluminum and a closed-cell foam gasket, with a reinforced double V-pan lid.
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Best Rear AccessIts 57-inch V-shape design is specified for fifth-wheel clearance, and two rear-opening doors remain accessible at the tailgate when hitched.
View on Amazon- Highest Capacity Dee Zee DZ8560WB Black Chest
Compare Fifth Wheel Tool Box Options
| # | Product | Weight | Capacity | Material | Buy |
|---|---|---|---|---|---|
| 1 | 1. UWS EC20093 58-Inch BoxBest Overall | 47.7 lb | 6.1 cubic feet | Aluminum | View on Amazon |
| 2 | 2. Dee Zee DZ8560W Red LabelBest Silver Chest | — | — | Aluminum, Stainless Steel | View on Amazon |
| 3 | 3. UAA TB203-57RD V-Shape BoxBest Rear Access | 39.9 lb | — | — | View on Amazon |
| 4 | 4. UWS FWB-58 Bright Aluminum BoxLow-profile fifth-wheel towing | 32.2 lb | 6.1 cubic feet | Aluminum | View on Amazon |
| 5 | 5. Dee Zee DZ8560WB Black ChestHighest Capacity | 66 lb | 14.9 cubic feet | Aluminum, Stainless Steel | View on Amazon |
| 6 | 6. UWS FWB-58-BLK BoxBlack low-profile fifth-wheel storage | 32.2 lb | 6.1 cubic feet | Aluminum | View on Amazon |
| 7 | 7. Highway Products Partner BoxDiamond-plate base preference | — | — | — | View on Amazon |
| 8 | 8. Highway Products Single-Lid BoxBlack single-lid box shoppers | — | — | — | View on Amazon |
| 9 | 9. DE ZE DZ8560W Red LabelLockable silver tool storage | — | 200 lb | Aluminum, Stainless Steel | View on Amazon |
| 10 | 10. DE ZE DZ8560WB Black ChestLarge gloss-black utility chest | 66 lb | 14.9 cubic feet | Aluminum, Stainless Steel | View on Amazon |
Detailed Reviews: Best Fifth Wheel Tool Boxes For Trucks

#1 · Best Overall
1. UWS EC20093 58-Inch Box
- Weight: 47.7 lb
- Capacity: 6.1 cubic feet
- Material: Aluminum
Best for: Towers needing secure bed storage.
Why it ranks #1: Its fifth-wheel clearance design, 6.1-cubic-foot capacity, extra-thick aluminum, RigidCore lid, and stated MicroSeal gasket make it a well-detailed fit.
A RigidCore foam-filled lid is the defining feature of the UWS EC20093, adding structural integrity while helping prevent binding. Its fifth-wheel-specific profile leaves clearance for coupling and towing, so drivers can keep tools in the bed without giving up trailer hookup access.
The 58-inch box provides 6.1 cubic feet of storage in a one-piece aluminum body, combining a lightweight material with extra-thick, diamond-plate construction. A MicroSeal gasket helps keep dust, debris, and moisture away from stored gear, while the stainless-steel locking system adds a security measure. The foam-filled lid is intended to resist binding as it opens and closes. Its fifth-wheel clearance makes it a practical bed-storage choice for owners who tow regularly.
- Fifth-wheel profile provides coupling and towing clearance
- RigidCore foam-filled lid helps prevent binding
- 6.1-cubic-foot capacity
- MicroSeal gasket helps seal out dust, debris, and moisture
- The 58-inch box is limited to 6.1 cubic feet of storage.
Skip it if you need a chest with 14.9 cubic feet; the Dee Zee DZ8560WB offers that listed capacity.
This suits fifth-wheel owners who want lockable, weather-sealed tool storage without sacrificing hookup clearance. Its 58-inch footprint and 6.1-cubic-foot capacity set the practical storage boundary, so check that the volume meets your gear needs.
Full product details
| Brand | uws |
|---|---|
| Capacity | 6.1 cubic feet |
| Color | Black |
| Included Components | 5th Wheel Tool Box Matte Black Aluminum 58" 5th Wheel Truck Tool Box (Heavy Packaging) |
| Item Weight | 47.7 pounds |
| Manufacturer | UWS |
| Part Number | EC20093 |
| Manufacturer Warranty Description | Limited Lifetime Warranty (One-Year Finish, One-Year Parts) |
| Material | Aluminum |
| Material Features | Durable and lightweight one-piece aluminum construction with a Diamond Plate surface |
| Model Number | EC20093 |
| Special Features | Lockable |
| Recommended Uses | Tools |
| Special Feature | Lockable |
| Style | Modern |
| Style Name | Modern |
| Additional Information | Important information |
Listed on Amazon as: UWS EC20093 58-Inch Matte Black Heavy-Wall Aluminum 5th Wheel Truck Bed Tool Box, RigidCore Lid
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#2 · Best Silver Chest
2. Dee Zee DZ8560W Red Label
- Material: Aluminum, Stainless Steel
Best for: Wide silver gear storage.
Why it ranks #2: This lockable fifth-wheel chest uses 0.056-inch Brite-Tread aluminum and a closed-cell foam gasket, with a reinforced double V-pan lid.
The Dee Zee DZ8560W pairs extra-wide storage with a closed-cell foam gasket, giving fifth-wheel truck owners room for more gear while helping resist the elements entering the box. Its Brite-Tread aluminum construction keeps the chest non-rusting and lightweight for bed storage.
A double-V pan lid stiffener adds rigidity, while internal bends and a three-piece body contribute strength through the chest structure. The closed-cell foam gasket helps resist outside elements, supporting storage of tools and other gear in the truck bed. Stainless-steel paddle handles are lockable, and the product description also lists dampened gas shocks and self-adjusting strikers. These features make it a considered choice for buyers who value a reinforced lid and controlled access.
- Extra-wide storage accommodates more gear
- Non-rusting Brite-Tread aluminum construction
- Closed-cell foam gasket helps resist the elements
- Lockable stainless-steel paddle handles
- The listed maximum weight recommendation is only 2 pounds.
Skip it if you need a stated 14.9-cubic-foot capacity; the Dee Zee DZ8560WB lists that volume.
Choose this Red Label chest if extra-wide storage, a gasket, and lockable stainless-steel handles suit your truck-bed workflow. Its listed two-pound maximum weight recommendation is a significant boundary for anyone planning to load heavy tools.
Full product details
| Brand | DEE ZEE |
|---|---|
| Color | Silver |
| Included Components | Funnel |
| Manufacturer | Dee Zee |
| Part Number | DZ 8560W |
| Material | Aluminum, Stainless Steel |
| Material Features | Lightweight, durable, resistant to corrosion |
| Maximum Weight Recommendation | 2 pounds |
| Model Number | DZ 8560W |
| Special Features | Lockable |
| Special Feature | Lockable |
Listed on Amazon as: Dee Zee DZ8560W Red Label Fifth Wheel Tool Box
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#3 · Best Rear Access
3. UAA TB203-57RD V-Shape Box
- Weight: 39.9 lb
Best for: Tailgate access while hitched.
Why it ranks #3: Its 57-inch V-shape design is specified for fifth-wheel clearance, and two rear-opening doors remain accessible at the tailgate when hitched.
Two rear-opening doors let the UAA TB203-57RD provide access from the tailgate while a fifth-wheel is hitched, addressing a practical storage-access problem for towing. Its V-shape is described as maintaining clearance for the fifth-wheel hookup while placing storage at the back of the pickup bed.
The 57-by-19-by-15-inch box uses a V-shaped form to combine tailgate-side storage with fifth-wheel hookup clearance. Its two rear-opening doors provide access when hitched, and folding locking T-handles let users secure those openings. That arrangement makes the access workflow distinct from a chest that requires reaching over or around the trailer connection. The listed specifications give dimensions and weight, but do not state a capacity or construction material.
- V-shape preserves fifth-wheel hookup clearance
- Two rear-opening doors provide tailgate access when hitched
- Folding locking T-handles secure the doors
- Listed dimensions are 57 by 19 by 15 inches
- The supplied specifications do not state a storage capacity.
Skip it if you need a listed capacity before selecting a box; the UWS EC20093 specifies 6.1 cubic feet.
This is a fit for fifth-wheel owners who prioritize tailgate access while hitched and want locking rear doors. Its listed dimensions are 57 by 19 by 15 inches, but no capacity is supplied, limiting volume comparisons.
Full product details
| Brand | UAA |
|---|---|
| Item Weight | 39.9 pounds |
| Item model number | TB203-57RD |
| Manufacturer | Unique Truck Accessories |
| Part Number | TB203-57RD |
| Dimensions | 57 x 19 x 15 inches |
Listed on Amazon as: TB203-57RD 57" V-Shape 5th Wheel RV Box
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#4
4. UWS FWB-58 Bright Aluminum Box
- Weight: 32.2 lb
- Capacity: 6.1 cubic feet
- Material: Aluminum
Best for: Low-profile fifth-wheel towing.
Why it ranks #4: The low-profile design is stated to provide fifth-wheel towing clearance, with a 6.1-cubic-foot capacity and 0.058-inch one-piece aluminum tub.
A low-profile shape gives the UWS FWB-58 towing clearance for a fifth-wheel trailer, making it the central choice for drivers who want tools aboard while hitched. Its 0.058-inch extra-thick, one-piece aluminum tub is specified for holding heavy tools and cargo.
The box offers 6.1 cubic feet of storage, while its one-piece aluminum tub provides a continuous enclosure for tools and cargo. UWS pairs that tub with a patented RigidCore foam-filled lid intended to maximize strength and prevent binding, supporting repeated access. Independent steel locks and latches, along with reinforced striker posts, add security and durability details. The low profile is the key fit consideration for owners balancing bed storage with fifth-wheel hookup clearance.
- Low-profile design provides fifth-wheel towing clearance
- 0.058-inch extra-thick one-piece aluminum tub
- RigidCore foam-filled lid helps prevent binding
- 6.1-cubic-foot capacity
- The listing specifies LTL shipping only.
Skip it if you need parcel shipment; the UWS EC20081 is identified as the equivalent box for parcel shipment.
This fits fifth-wheel owners seeking a low-profile aluminum box with a reinforced foam-filled lid and 6.1 cubic feet inside. Account for its listed LTL-only shipping and verify that the low-profile storage format meets your cargo needs.
Full product details
| Brand | uws |
|---|---|
| Capacity | 6.1 cubic feet |
| Color | Silver |
| Item Weight | 32.2 pounds |
| Manufacturer | UWS/United Welding Services |
| Part Number | FWB58 |
| Manufacturer Warranty Description | Limited Lifetime Warranty (One-Year Finish, One-Ye |
| Material | Aluminum |
| Material Features | extra-thick aluminum |
| Maximum Weight Recommendation | 10 pounds |
| Model Number | FWB58 |
| Special Features | Long Lasting |
| Special Feature | Long Lasting |
| Style | Original Packaging |
| Style Name | Original Packaging |
| Additional Information | Important information |
Listed on Amazon as: uws FWB-58 Bright Aluminum 58" 5th Wheel Truck Tool Box (LTL Shipping Only)
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#5 · Highest Capacity
5. Dee Zee DZ8560WB Black Chest
- Weight: 66 lb
- Capacity: 14.9 cubic feet
- Material: Aluminum, Stainless Steel
Best for: Large-capacity gloss-black storage.
Why it ranks #5: Its listed 14.9-cubic-foot capacity exceeds the smaller 6.1-cubic-foot UWS boxes; it has a black powder coat and fifth-wheel chest designation.
A 14.9-cubic-foot capacity distinguishes the Dee Zee DZ8560WB, providing substantially sized enclosed storage for truck-bed tools and jobsite gear. Its Brite-Tread aluminum receives a protective gloss-black powder coat, pairing an oxidation-protective finish with a fifth-wheel utility chest format.
At 72 inches long, 26 inches wide, and 25 inches high, this chest occupies a substantial footprint, so bed space is an important fit consideration. The double-V pan lid stiffener supports rigidity, while internal bends and a three-piece body add structural strength. A closed-cell foam gasket helps resist the elements, and contractor-grade stainless-steel paddle latches provide lockable access. The powder-coated finish is described as protecting against oxidation while delivering a gloss-black appearance.
- 14.9-cubic-foot storage capacity
- Protective gloss-black powder coat helps prevent oxidation
- Double-V pan lid stiffener adds rigidity
- Closed-cell foam gasket helps resist the elements
- Its 72-by-26-by-25-inch dimensions require substantial truck-bed space.
Skip it if you need a smaller 6.1-cubic-foot box; the UWS EC20093 lists that capacity and a 58-inch width.
The DZ8560WB suits contractors or truck owners carrying a large gear load who can accommodate its 72-inch length and 14.9-cubic-foot capacity. Its footprint is the main boundary; measure available bed space before choosing this chest.
Full product details
| Brand | DEE ZEE |
|---|---|
| Capacity | 14.9 cubic feet |
| Color | Gloss Black |
| Included Components | Funnel |
| Dimensions | 72"L x 26"W x 25"H |
| Item Weight | 66 pounds |
| Manufacturer | Dee Zee |
| Part Number | DZ 8560WB |
| Manufacturer Warranty Description | 30 Days |
| Material | Aluminum, Stainless Steel |
| Model Number | DZ 8560WB |
Listed on Amazon as: Dee Zee DZ8560WB Red Label Fifth Wheel Utility Chest Tool Box
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#6
6. UWS FWB-58-BLK Box
- Weight: 32.2 lb
- Capacity: 6.1 cubic feet
- Material: Aluminum
Best for: Black low-profile fifth-wheel storage.
Why it ranks #6: This 58-inch black aluminum fifth-wheel box lists 6.1 cubic feet and a beveled insulated lid, though its feature details are sparse.
The UWS FWB-58-BLK is identified as a black 58-inch fifth-wheel box with a beveled insulated lid, giving buyers a specific lid and finish combination to consider. Its 6.1-cubic-foot capacity supplies a defined amount of enclosed truck-bed storage.
The listing specifies a 6.1-cubic-foot capacity in an aluminum box weighing 32.2 pounds, helping buyers compare storage volume with the item they will handle. Additional verified UWS facts describe extra-thick diamond-plate aluminum construction and a MicroSeal gasket that helps seal out dust, debris, and moisture. The product title identifies a beveled insulated lid, but the supplied listing does not describe its operating details. The fifth-wheel designation identifies its intended truck-bed use.
- 6.1-cubic-foot capacity
- 58-inch fifth-wheel box designation
- Beveled insulated lid identified in the title
- MicroSeal gasket helps seal out dust, debris, and moisture
- The supplied listing does not give a detailed lid operating description.
Skip it if you need a stated 14.9-cubic-foot chest; the Dee Zee DZ8560WB lists that capacity.
This suits fifth-wheel owners seeking a black aluminum box with a beveled insulated lid and 6.1 cubic feet of storage. Its listed capacity and 58-inch designation define the choice; make sure that volume suits your tools and cargo.
Full product details
| Brand | uws |
|---|---|
| Capacity | 6.1 cubic feet |
| Color | Black |
| Included Components | 5th Wheel Tool Box Gloss Black Aluminum 58" 5th Wheel Truck Tool Box (LTL Shipping Only) |
| Item Weight | 32.2 pounds |
| Manufacturer | Uws |
| Part Number | FWB-58-BLK |
| Manufacturer Warranty Description | Limited Lifetime Warranty (One-Year Finish, One-Ye |
| Material | Aluminum |
| Material Features | High-strength, extra-thick |
| Model Number | FWB-58-BLK |
| Special Features | Portable |
| Recommended Uses | Tools |
| Special Feature | Portable |
| Style | Original Packaging |
| Style Name | Original Packaging |
| Additional Information | Important information |
Listed on Amazon as: UWS FWB-58-BLK Black 58" Fifth Wheel Box with Beveled Insulated Lid
View on AmazonWhy it ranks #7: The listing identifies a 58-by-10.5-by-18-inch fifth-wheel partner box with a diamond-plate base, but supplies little further specification.
A diamond-plate base is the clearest specified feature of the Highway Products 3122-001 Partner Box, making it relevant to buyers seeking that surface detail in a fifth-wheel box. The title also identifies a 58-by-10.5-by-18-inch format for planning its place in the truck bed.
The product title identifies this as a 5th Wheel Partner Box and gives dimensions of 58 by 10.5 by 18 inches, which lets buyers compare its stated footprint with available bed space. Diamond plate is specified for the base and the box designation. The listing supplies no capacity, material description, access arrangement, or locking detail, so decisions about loading and everyday access cannot be based on those specifications here. A funnel is listed among included components.
- Identified as a 5th Wheel Partner Box
- Diamond-plate base specified in the title
- Listed dimensions are 58 by 10.5 by 18 inches
- Funnel listed as an included component
- The supplied listing does not specify capacity or access details.
Skip it if you require a listed capacity and gasket; the Dee Zee DZ8560W specifies 200 pounds and a closed-cell foam gasket.
Consider this Highway Products box if its stated 58-by-10.5-by-18-inch dimensions and diamond-plate base match your priorities. The supplied details do not state capacity or access features, so those needs remain outside the available specifications.
Full product details
| Brand | Highway Products |
|---|---|
| Included Components | Funnel |
| Manufacturer | Highway Products |
| Part Number | 3122-001 |
| Model Number | 3122-001 |
Listed on Amazon as: 58X10.5X18 5TH Wheel Partner Box with Diamond Plate Base/Diamond Plate
View on AmazonWhy it ranks #8: Its title identifies a single-lid fifth-wheel tool box in black, but the listing provides no dimensions, capacity, or construction details.
The single-lid configuration is the defining detail in the Highway Products 3022-003-BK62 title, giving buyers a clear opening style to consider for fifth-wheel truck-bed storage. The title also identifies the box as black, while the listing provides no further dimensions or construction specifications.
This listing identifies a Highway Products fifth-wheel tool box with a single lid and black finish. Those details can help narrow a choice for buyers who specifically want that opening arrangement and appearance, but the supplied information does not establish the box's dimensions, capacity, material, or locking system. Those omissions limit planning for bed-space fit and cargo volume. Treat the named configuration as the available basis for comparison rather than assuming other features.
- Single-lid configuration identified in the title
- Black color identified in the title
- Named as a fifth-wheel tool box
- Highway Products brand identified
- The supplied listing gives no dimensions or capacity.
Skip it if you need dimensions and capacity stated; the UWS EC20093 lists 58 inches and 6.1 cubic feet.
This may suit shoppers specifically seeking a black, single-lid fifth-wheel box and who can evaluate the product with the limited details supplied. Its dimensions and capacity are not stated, making bed-space and volume planning harder.
Full product details
| Brand | Highway Products |
|---|---|
| Color | Black |
Listed on Amazon as: 3022-003-BK62 – Single Lid 5th Wheel Tool Box with Black
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#9
9. DE ZE DZ8560W Red Label
- Capacity: 200 lb
- Material: Aluminum, Stainless Steel
Best for: Lockable silver tool storage.
Why it ranks #9: The part number matches the listed Dee Zee silver fifth-wheel box, and the entry states 55.5-by-22.5-by-12-inch dimensions and lockability.
A lockable aluminum chest with a listed 200-pound capacity makes the DE ZE DZ8560W a defined option for storing tools in a fifth-wheel truck bed. Its 55.5-by-22.5-by-12-inch dimensions provide a concrete footprint for comparing against available space.
The listing specifies lightweight, corrosion-resistant aluminum and stainless steel, supporting buyers who want those materials in a storage chest. Its 200-pound stated capacity sets a load reference, while the lockable feature addresses controlled access to tools. Dimensions of 55.5 by 22.5 by 12 inches help with placement planning. The product information identifies the model as DZ8560W; use that identity alongside the listed measurements when evaluating whether the chest suits the intended truck-bed location.
- 200-pound capacity listed
- Lockable storage feature
- Aluminum and stainless-steel materials
- 55.5-by-22.5-by-12-inch dimensions
- The listed 12-inch height limits vertical storage space.
Skip it if you need more than 200 pounds of stated capacity; the Dee Zee DZ8560W listing gives a two-pound maximum recommendation, not a higher one.
This is for buyers seeking a lockable silver chest with listed corrosion-resistant materials and a stated 200-pound capacity. Its 12-inch height and specified footprint set storage boundaries, so check that the intended gear fits.
Full product details
| Brand | Generic |
|---|---|
| Capacity | 200 pounds |
| Color | Silver |
| Included Components | Funnel |
| Dimensions | 55.5"L x 22.5"W x 12"H |
| Manufacturer | US Based Company |
| Part Number | DZ 8560W |
| Material | Aluminum, Stainless Steel |
| Material Features | Lightweight, durable, resistant to corrosion |
| Model Number | DZ 8560W |
| Special Features | Lockable |
| Recommended Uses | Tools, For storage |
| Special Feature | Lockable |
| Style | Classic |
| Style Name | Classic |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Listed on Amazon as: DE ZE DZ8560W Red Label Fifth Wheel Tool Box
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#10
10. DE ZE DZ8560WB Black Chest
- Weight: 66 lb
- Capacity: 14.9 cubic feet
- Material: Aluminum, Stainless Steel
Best for: Large gloss-black utility chest.
Why it ranks #10: This entry identifies the DZ8560WB fifth-wheel chest and lists 14.9 cubic feet, but duplicates the Dee Zee model with a generic brand listing.
A listed 14.9-cubic-foot capacity gives the DE ZE DZ8560WB substantial enclosed space for tools, hardware, and truck or jobsite gear. Its gloss-black finish and 72-by-26-by-25-inch dimensions further define a large utility chest, while part number 8560WB identifies the listed configuration.
The aluminum and stainless-steel construction is specified alongside the chest's 66-pound weight and 14.9-cubic-foot capacity, helping buyers assess both storage volume and the physical item. At 72 by 26 by 25 inches, it requires a substantial bed footprint. The listing describes grouped, accessible enclosed storage, but does not provide further detail about access hardware. Use the dimensions and part number to assess the intended application and available truck-bed space before selecting this utility chest.
- 14.9-cubic-foot capacity
- Aluminum and stainless-steel materials listed
- Gloss-black finish
- 72-by-26-by-25-inch dimensions specified
- The 66-pound item weight adds substantial weight before loading.
Skip it if you need a 58-inch box with stated towing clearance; the UWS EC20093 lists both features.
This suits buyers seeking a large gloss-black chest with 14.9 cubic feet for truck or jobsite gear. Its 72-inch length and 66-pound listed weight are meaningful handling and bed-space considerations for installation planning.
Full product details
| Brand | Generic |
|---|---|
| Capacity | 14.9 cubic feet |
| Color | Gloss Black |
| Included Components | Funnel |
| Dimensions | 72"L x 26"W x 25"H |
| Item Weight | 66 pounds |
| Manufacturer | US Based Company |
| Part Number | DZ 8560WB |
| Manufacturer Warranty Description | 30 Days |
| Material | Aluminum, Stainless Steel |
| Model Number | DZ 8560WB |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: This product can expose you to chemicals including styrene which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov |
Listed on Amazon as: DE ZE DZ8560WB Red Label Fifth Wheel Utility Chest Tool Box
View on AmazonAvoiding a clearance and fitment mismatch
A fifth-wheel label does not by itself establish that a box will clear your hitch, trailer, or truck-bed layout. UWS describes its EC20093 and FWB-58 bright aluminum models as low-profile or built for fifth-wheel clearance, and the UAA TB203-57RD also claims clearance while hitched. Those statements are useful starting points, not a vehicle-specific fitment guarantee.
A notable sizing trap is that the Dee Zee black chest is listed at 72 by 26 by 25 inches and 14.9 cubic feet, substantially different from the 58-inch UWS models. Measure available bed width and the space needed for coupling before choosing a large chest.
Also check the exact part number: two Dee Zee listings have different suffixes, and the generic entries provide less reliable brand identification. Confirm mounting position and dimensions with the seller or manufacturer before ordering.
Access and sealing involve different trade-offs
Access style and closure details can affect daily use as much as box capacity. The UAA TB203-57RD is the only listed model described with two rear-opening doors and folding locking T-handles; its layout is intended to provide tailgate access while hitched. Most of the other detailed listings describe a chest or lid, including UWS’s foam-filled RigidCore lid and Dee Zee’s crown-style lid with a double V-pan stiffener.
A lid may suit larger gear, but check whether your hitch hardware or other bed cargo will obstruct opening it. Weather protection also differs in the information provided: UWS lists a MicroSeal gasket, and Dee Zee lists a closed-cell foam gasket.
These features are intended to resist dust, debris, or moisture, but no listing establishes waterproof performance. Match the access direction and stated sealing features to your use, and store moisture-sensitive tools accordingly.
How to Choose a Fifth Wheel Tool Box
Capacity and overall dimensions
Look for a capacity and footprint that fit both your gear and the space left around your hitch. The listed UWS boxes each provide 6.1 cubic feet, while the Dee Zee DZ8560WB is listed at 14.9 cubic feet and measures 72 by 26 by 25 inches. The UAA box is 57 by 19 by 15 inches, though its capacity is not supplied.
A buyer carrying a compact tool set may prefer a smaller stated capacity and footprint; someone storing bulky equipment may consider the larger Dee Zee chest only after checking bed clearance. Do not treat capacity as a substitute for measurements: confirm the box, hitch, and trailer can coexist in your specific truck.
Material, weight, and construction
Compare the stated construction and weight when balancing a rugged enclosure against the load placed in the truck bed. UWS lists extra-thick, 0.058-inch aluminum for the FWB-58 bright model, while Dee Zee specifies 0.056-inch Brite-Tread aluminum for its Red Label boxes. The UWS EC20093 weighs 47.7 pounds; the bright FWB-58 and black FWB-58-BLK are each listed at 32.2 pounds.
Dee Zee’s black chest weighs 66 pounds. Buyers prioritizing a lighter listed box can look toward the 32.2-pound UWS models; those needing substantially more storage may consider the heavier Dee Zee chest.
Check the actual listing and vehicle payload guidance, since weights and materials are not supplied for every product.
Access and closure details
Choose an opening style that you can use with your hitch and cargo in place, and compare the sealing and locking details actually listed. The UAA TB203-57RD has two rear-opening doors with folding locking T-handles for access near the tailgate when hitched. UWS specifies a lockable EC20093 with a RigidCore lid and MicroSeal gasket; Dee Zee lists stainless-steel paddle handles, gas shocks, and a closed-cell foam gasket for its Red Label chest.
Buyers who need access from behind the cab area may favor the UAA’s rear doors, while those preferring a single-lid chest can compare UWS and Dee Zee. Verify opening clearance and security hardware on the exact model; the sparse Highway Products listings do not provide comparable details.
Which Fifth Wheel Tool Box Should You Choose?
For the best-documented all-around fifth-wheel fit, choose the UWS EC20093 58-Inch Box: it combines stated coupling clearance, 6.1 cubic feet, a RigidCore lid, and a MicroSeal gasket. If rear access while hitched matters most, the UAA TB203-57RD V-Shape Box has two rear-opening doors and a stated 57-by-19-by-15-inch footprint. For a larger storage chest, consider the Dee Zee DZ8560WB Black Chest, but its 72-by-26-by-25-inch dimensions and 66-pound weight make careful bed and hitch measurements essential.
The Dee Zee DZ8560W Red Label is a silver alternative with a closed-cell foam gasket and reinforced lid. Whichever you select, confirm exact fitment, opening clearance, and mounting requirements before ordering.
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Frequently Asked Questions
How do I measure my truck bed and hitch area before choosing a fifth wheel box?
Measure the available bed width and depth, then check the hitch’s position and the space it needs to couple and turn. Compare those measurements with the box’s full footprint, height, and lid-opening path. Also account for mounting hardware and any bed features.
Confirm fitment for your specific truck before ordering.
Can a fifth wheel tool box be mounted without interfering with trailer coupling or bed access?
It can, if its placement and opening clearance suit the truck and hitch. Check the box dimensions against the hitch’s coupling and turning area, and consider whether the lid or doors can open when the trailer is connected. Verify mounting requirements and access to the rest of the bed before installation.
How can I protect tools from water and dust inside an aluminum truck box?
Choose a box with a stated sealing feature, such as a gasket, and keep the lid and seal clean and properly seated. The UWS EC20093 lists a MicroSeal gasket intended to resist dust, debris, and moisture. No box should be assumed fully waterproof; dry tools before storage and check seals for wear.
What should I check about a box’s opening before buying?
Check how the lid or doors open and whether nearby cab, hitch, or cargo could block them. The UAA TB203-57RD is described as having two rear-opening doors, which may suit access needs while hitched. Confirm that the opening direction and available clearance work in your truck’s actual bed layout.
When is a larger utility chest a practical choice?
A larger chest can make sense when you need more storage and your bed can accommodate its footprint and weight. The Dee Zee DZ8560WB is listed at 72 by 26 by 25 inches and 66 pounds, so measure the bed and hitch area carefully and confirm the mounting requirements before choosing it.
Final Words
For the best-documented all-around fifth-wheel fit, the UWS EC20093 stands out for its stated coupling clearance, 6.1-cubic-foot capacity, RigidCore lid, and MicroSeal gasket. Choose the UAA TB203-57RD if rear access while hitched is the priority, or consider a Dee Zee chest when larger storage suits your needs. Before ordering any option, verify its dimensions, hitch and opening clearance, and mounting requirements against your truck.



