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UWS








Always the correct part
We know our products
Quality Products
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Always the correct part
We know our products
Quality Products
Free Shipping!
On Sale Today
Original price was $734.95. Current price is $666.95.Free Shipping
Warranty: Limited Lifetime Warranty (One-Year Finish, One-Year Parts)
Finish: BRIGHT ALUMINUM
Material: Aluminum
Part Type: SIDE MOUNT
UWS underbody tool boxes provide unbeatable storage and security for your items under the bed of your truck or trailer. The box conveniently mounts underneath the bed of a flatbed truck, dump truck or trailer, leaving more space on top of the bed for other cargo. Each box features a corrosion-resistant aluminum construction, heavy-duty cable door supports and a stainless steel locking system -- all to keep your equipment and valuables safe and easily accessible whenever needed. Each UWS underbody tool box is constructed from extra-thick aluminum for increased structural strength. The tub is welded together into a single piece for weather resistance and to easily hold heavy tools and other items. The door features aircraft-grade stainless steel cables, rated to support up to 1,000 lbs., ensuring reliable strength and door operation. The locking mechanism of this underbody truck tool box provides excellent security for your items, featuring a stainless steel, key-operated T-handle. Stainless steel construction supplies the lock with long-lasting corrosion resistance, and the door also has a MicroSeal gasket, blocking moisture, dust and insects from getting inside and damaging your valuables. The door also opens a full 90 degrees for easier access. UWS truck tool boxes are available in multiple sizes to accommodate any storage need. Like all UWS products, each one is proudly assembled right here in the USA for style and long-lasting dependability (NOTE: This product is heavily packaged for parcel shipping).

UWS designs and builds heavy-duty truck tool boxes and storage for tradespeople and truck owners. The line covers crossover and side-mount boxes, chest boxes, underbody boxes, transfer tanks and dog boxes. Every aluminum box is designed, fabricated and welded in Perry, Florida, with construction aimed at job-site abuse, road vibration and daily use.
UWS is a leading manufacturer and designer of truck tool boxes and truck accessories, and a Lippert brand. The company's focus is narrow and deliberate: storage that stands up to being opened and slammed shut dozens of times a day, loaded past what looks reasonable, and left outdoors in whatever weather the job brings. Its customers are electricians, plumbers, contractors, farmers, outdoorsmen and truck owners who treat a pickup as a working tool rather than transport.
The catalog covers the full range of bed storage. Crossover boxes sit across the bed behind the cab in single-lid, gull-wing, secure-lock and low-profile styles, so there is a fit whether the priority is capacity, rear visibility or working under a tonneau. Side-mount boxes mount along the bed rails and keep the bed floor free for cargo, while underbody boxes tuck beneath the frame rails of service bodies and flatbeds.
Beyond the bed, UWS makes portable chest boxes that move between vehicles and the shop, transfer tanks and combination tank-and-toolbox units for crews working away from fuel supply, and insulated, ventilated dog boxes for hunters and handlers.
Manufacturing sits at the centre of the brand's identity. Every UWS aluminum tool box is designed, fabricated and welded in Perry, Florida, by tradespeople with decades of experience, and the company's Rooted in Trades initiative is built around that connection to skilled manual work. Boxes use heavy-gauge aluminum, continuous welds at the seams, weather stripping to seal against rain and dust, and locking systems intended to resist tampering. The practical result is storage that keeps tools dry, organized and where they were left.
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Call 888-634-9494Limited Lifetime Warranty (One-Year Finish, One-Year Parts)





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The package includes one underbody tool box and two keys. Hardware for installation is not included; you must purchase your own bolts, fasteners and mounting brackets separately.
The EC40061 is designed to mount on various truck types and chassis styles. However, the manual states that specific installation and mounting bracket details must be obtained from your local truck up-fitter or equipment dealer, as fitment varies by vehicle. Contact CURT at 877.287.8634 or your dealer to confirm compatibility with your specific truck.
Hardware is not included with the tool box. You must purchase your own bolts and fasteners. The manual provides general torque specifications for M6, M8, M10, M12 metric bolts and 1/4", 5/16", 3/8", 7/16", 1/2" SAE bolts, but the specific sizes and quantities required depend on your vehicle and mounting brackets. Consult your truck up-fitter or equipment dealer for the exact hardware specifications for your installation.
Mounting brackets must be equal to or thicker than 1/4" steel. The underside of the tool box must be supported. The manual does not specify exact bracket dimensions or part numbers; contact your local truck up-fitter or equipment dealer for the correct brackets for your vehicle.
The manual states that specific installation details and mounting brackets must be obtained from your local truck up-fitter or equipment dealer. This suggests professional installation is recommended. Contact CURT at 877.287.8634 or your dealer to determine whether professional installation is required for your vehicle.
Before drilling, check under your vehicle to ensure the drill location does not puncture, cut or obstruct any brake or fuel fluid lines, electrical wires, fuel tanks, or other components. Take precaution that all fasteners near the fuel tank do not create the possibility of fuel tank puncture or other damage during a collision. Do not interfere with factory-installed safety equipment.
General torque specifications are: M6 bolt 3 ft-lbs, M8 bolt 7 ft-lbs, M10 bolt 16 ft-lbs, M12 bolt 28 ft-lbs (metric); 1/4" bolt 3 ft-lbs, 5/16" bolt 7 ft-lbs, 3/8" bolt 16 ft-lbs, 7/16" bolt 20 ft-lbs, 1/2" bolt 28 ft-lbs (SAE). These are general guidelines. If purchasing hardware, use the torque specifications provided with that hardware.
Do not use this tool box for storing or transporting flammables, explosives, hazardous materials or hazardous waste, such as containers of gasoline, solvents, gun powder, dynamite, propane tanks, acetylene tanks and cutting torches. Danger of explosion.
Never exceed the vehicle manufacturer's recommended capacity. The manual does not specify a weight capacity for the tool box itself; refer to your vehicle's documentation for load limits.
Use mild automotive detergent to clean the product. Do not use dish detergent, abrasive cleaners, abrasive pads, wire brushes or other similar products that may damage the finish. For polished, gloss and other smooth finishes, polish may be used to clear small scratches and scuffs. After installation, treat or seal all fasteners and exposed metal in any holes drilled in the vehicle to prevent corrosion.
No. Do not modify this product. Use it only for the purposes for which it was designed. Consult your dealer if you have any questions regarding the installation, operation, use and limits of the product.
The EC40061 is designed for various truck types and chassis styles. Contact your local truck up-fitter or equipment dealer, or call CURT at 877.287.8634, to confirm fitment for your specific vehicle.
No hardware is included. You must purchase your own bolts and fasteners. Mounting brackets must be equal to or thicker than 1/4" steel.
Yes. Before drilling, check under your vehicle to ensure the drill location does not puncture brake or fuel lines, electrical wires, or fuel tanks. Do not create fastener locations that could puncture the fuel tank during a collision.
28 ft-lbs for 1/2" SAE bolts. This is a general guideline; if purchasing hardware, use the torque specifications provided with that hardware.
No. Do not store or transport flammables, explosives, hazardous materials or hazardous waste, including gasoline, solvents, propane tanks, acetylene tanks or cutting torches. Danger of explosion.
Use mild automotive detergent. Do not use dish detergent, abrasive cleaners, abrasive pads or wire brushes. For smooth finishes, polish may be used to clear small scratches. Seal all fasteners and exposed metal in drilled holes to prevent corrosion.
| Shank Diameter (C) | Shank Length (B) | Rise (D) | GTW | Chrome Bulk # | Chrome Full Throne # | Chrome Half Throne # | Stainless Bulk # | Stainless Full Throne # | Raw Bulk # |
|---|---|---|---|---|---|---|---|---|---|
| 1-7/8" Ball Diameter (A) | |||||||||
| 3/4" | 1-5/8" | 0" | 2,000 lbs. | 40001 | 40061 | 40161 | -- | -- | -- |
| 3/4" | 2-1/8" | 0" | 2,000 lbs. | 40015 | 40063 | 40163 | -- | -- | 40050 |
| 3/4" | 2-1/8" | 1" | 2,000 lbs. | 40016 | 40071 | 40171 | -- | -- | 40051 |
| 3/4" | 3" | 0" | 2,000 lbs. | 40026 | 40072 | 40172 | -- | -- | 40081 |
| 1" | 2-1/8" | 0" | 3,500 lbs. | 40031 | -- | -- | -- | -- | -- |
| 1" | 3" | 0" | 3,500 lbs. | 40032 | -- | -- | -- | -- | -- |
| 2" Ball Diameter (A) | |||||||||
| 1" | 1-3/4" | 0" | 3,500 lbs. | 40003 | 40064 | 40164 | -- | -- | -- |
| 3/4" | 2-1/8" | 0" | 3,500 lbs. | 40018 | 40065 | 40165 | -- | -- | 40052 |
| 3/4" | 2-1/8" | 1" | 3,500 lbs. | 40019 | 40073 | 40173 | -- | -- | 40082 |
| 1" | 2-1/8" | 0" | 6,000 lbs. | 40001 | 40066 | 40166 | 40053 | -- | 40083 |
| 1" | 2-1/8" | 1" | 6,000 lbs. | 40002 | -- | -- | -- | -- | -- |
| 1-1/4" | 2-5/8" | 0" | 8,000 lbs. | 40034 | -- | -- | -- | -- | -- |
| 1" | 3" | 0" | 12,000 lbs. | 40033 | -- | -- | -- | -- | -- |
| 1-1/4" | 2-5/8" | 0" | 12,000 lbs. | 40038 | -- | -- | -- | -- | -- |
| 1" | 2-1/8" | 0" | 10,000 lbs. | 40039 | -- | -- | -- | -- | 40056 |
| 1-1/4" | 3" | 0" | 10,000 lbs. | 40090 | 40069 | 40190 | -- | -- | -- |
| 2-5/16" Ball Diameter (A) | |||||||||
| 1" | 2-1/8" | 0" | 7,500 lbs. | 40005 | 40067 | 40167 | -- | -- | 40084 |
| 1" | 2-1/4" | 0" | 10,000 lbs. | 40011 | -- | -- | -- | -- | 40042 |
| 1" | 2-1/2" | 0" | 12,000 lbs. | 40037 | -- | -- | -- | -- | -- |
| 1" | 2-1/8" | 1" | 6,000 lbs. | 40012 | 40075 | 40175 | -- | -- | -- |
| 1" | 3-1/4" | 0" | 6,000 lbs. | 40020 | -- | -- | -- | -- | -- |
| 1-1/4" | 2-5/8" | 0" | 15,000 lbs. | 40030 | 40078 | 40178 | 40055 | -- | -- |
| 1" | 3" | 0" | 15,000 lbs. | 40030 | 40078 | 40178 | 40055 | -- | -- |
| 1-1/4" | 2-5/8" | 1" | 15,000 lbs. | 40035 | -- | -- | -- | -- | -- |
| 1-1/4" | 2-5/8" | 0" | 20,000 lbs. | 40036 | -- | -- | -- | -- | 40085 |
| 1" | 2-1/2" | 2-1/4" | 25,000 lbs. | 40038 | -- | -- | -- | -- | 40086 |
| 1" | 2-5/8" | 1" | 12,000 lbs. | 40041 | -- | -- | 40045 | -- | -- |
| 1" | 2-5/8" | 2" | 15,000 lbs. | 40048 | 40089 | -- | -- | -- | 40087 |
| 1-1/4" | 2-5/8" | 1" | 20,000 lbs. | 40008 | 40081 | 40109 | 40109 | -- | -- |
| 1-1/4" | 2-1/2" | 0" | 25,000 lbs. | 40022 | 40076 | 40176 | -- | -- | 40088 |
| 1" | 2-1/2" | 0" | 25,000 lbs. | 40022 | 40076 | 40176 | -- | -- | 40088 |
| 3" Ball Diameter (A) | |||||||||
| 1-1/4" | 3-1/4" | 0" | 30,000 lbs. | -- | -- | -- | -- | -- | 40089 |
| 50mm Ball Diameter (A) | |||||||||
| 3/4" | 50mm | 0" | 1,600 kg. | 40099 | -- | -- | -- | -- | -- |
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