Carrying extra fuel requires strict attention to safety regulations and build quality. We researched the leading transfer tanks and tool combos available on Amazon, comparing manufacturer specifications against DOT and industry standards to ensure our recommendations meet legal and safety requirements.
Our evaluation focuses on material thickness, weld integrity, and pump reliability based on aggregated owner feedback. We analyzed how each unit performs in real world scenarios, ranging from long hauls to job site fueling, to identify the strengths and limitations of each model.
| Photo | Product | Score | Buy |
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Dee Zee DZ91753P Best Overall 50 Gallon Capacity |
9.0 | 🛒 Check Price |
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RDS 70258 Premium Pick 60 Gallon Capacity |
8.6 | 🛒 Check Price |
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Better Built 72313200 Best Value 51 Gallon Capacity |
8.3 | 🛒 Check Price |
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UWS EC50 Best Combo 50 Gallon Capacity |
7.9 | 🛒 Check Price |
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United Pacific 31208 Compact Choice 37 Gallon Capacity |
7.5 | 🛒 Check Price |
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Delta 35500 Budget Friendly 35 Gallon Capacity |
7.1 | 🛒 Check Price |
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Fill-Rite FR1210G06 Portable Option 12 Gallon Capacity |
6.8 | 🛒 Check Price |
1. Dee Zee DZ91753P: Best Overall
Dee Zee establishes a high benchmark with this model, utilizing 14 gauge aluminum that resists rust and dents better than thinner steel competitors. In our evaluation of the spec sheets, the internal baffling system stands out as a critical feature for maintaining vehicle stability during heavy braking or sharp turns, a sentiment echoed in many owner reviews regarding safety.
Despite its robust construction, the pump assembly included in the kit is functional but basic. Based on owner feedback, while reliable for occasional transfers, it may lack the high speed pressure needed for rapid refueling of heavy machinery. Buyers needing industrial speed might consider an aftermarket pump upgrade.
- Brite Tread aluminum construction for corrosion resistance
- Includes 12 volt fuel pump and nozzle
- Lockable tool box lid for secure storage
Pros: Heavy duty 14 gauge aluminum build; Excellent internal baffling to reduce fuel slosh; Integrated locking system protects fuel and tools
Cons: Some users find the pump flow rate slower than expected
2. RDS 70258: Premium Pick
We compared the RDS 70258 against similar capacity tanks and found its structural integrity to be superior, thanks to reinforced ribbing and high quality welds. The tank is specifically engineered to minimize fuel movement, which we identified as a key factor for preserving the center of gravity in pickup trucks.
However, the sheer mass of this unit when empty poses a challenge during setup. Owner feedback consistently notes that mounting this tank requires at least two people to align it correctly with the bed bolts. We recommend this product for users who prioritize capacity and durability over ease of initial installation.
- Heavy duty aluminum alloy construction
- Designed for diesel or gasoline use
- Includes fill neck, cap, and rollover valve
Pros: Superior weld quality ensures leak free operation; Larger capacity than most standard bed tanks; Very stable mounting design
Cons: Installation is difficult for one person due to weight; Paint finish can chip if not handled carefully
3. Better Built 72313200: Best Value
Better Built offers a compelling balance of functionality and cost. Our research indicates that the structural foam lid is a significant upgrade over standard stamped lids, providing a flat surface for storage without sagging over time. The 10 GPM pump included in the package is adequate for most consumer and light commercial applications.
While the structural warranty is impressive, our evaluation of owner feedback reveals occasional issues with the door seal gaskets losing elasticity faster than premium competitors. This model is an excellent choice for budget conscious buyers, but those in wet climates may need to inspect the seals periodically.
Pros: Competitive feature set for the cost; Lid design prevents warping in extreme heat; Pump components are easy to replace
Cons: Some reports of minor cosmetic blemishes on arrival; Gasket quality on the door is average
4. UWS EC50: Best Combo
The UWS EC50 distinguishes itself with a dual compartment design that integrates a toolbox directly above the fuel reservoir. We compared this to traditional separate units and found it maximizes utility in smaller beds. The RigidCore foam lid is notably stronger than hollow lids, preventing water pooling and theft.
However, this integration comes with a trade off in total fuel volume versus a pure tank design. In our evaluation of the dimensions, the tool cavity significantly reduces the area available for fuel. This unit is best suited for users who need secure tool storage and moderate fuel extension, rather than maximum range.
- Combination fuel tank and cross box tool storage
- Patented RigidCore foam filled lid
- Stainless steel locking paddle handles
Pros: Unique dual use saves bed space; Lid is extremely stiff and durable; Low profile design maintains rear visibility
Cons: Fuel capacity is split with tool storage; Pump placement can be awkward for some setups
5. United Pacific 31208: Compact Choice
United Pacific addresses the needs of short bed truck owners with this compact 37 gallon model. Our research confirms that its footprint allows for placement without obstructing the fifth wheel hitch or bulkhead in many configurations. The diamond tread aluminum provides a classic aesthetic and decent corrosion resistance.
The primary limitation we identified is the reduced range. For heavy duty users or long distance travelers, the 37 gallon volume may necessitate more frequent stops than the larger 50 plus gallon competitors. We recommend this tank for daily work trucks where space is at a premium.
- Diamond tread plate aluminum design
- Compact size fits short bed trucks
- Includes fuel cap and vent
Pros: Ideal for trucks with limited bed space; Lighter weight makes installation easier; Classic diamond tread look
Cons: Smaller capacity requires more frequent refills; Basic fit and finish compared to premium brands
6. Delta 35500: Budget Friendly
Delta provides a cost effective entry into the fuel transfer market with this steel tank. We evaluated the powder coat finish, which offers reasonable protection against the elements, though it lacks the innate corrosion resistance of aluminum. The internal baffles are effective at controlling surge, a critical safety feature we verified through spec analysis.
Users should note that the weight of this steel unit is significantly higher than aluminum counterparts. Owner feedback suggests that while the tank is solid, the fuel gauge sender units sold separately for this model can be inaccurate. This is a viable option for occasional use but may lack the longevity of aluminum tanks.
- Rectangular steel transfer tank
- Powder coat finish for rust resistance
- Includes internal baffles
Pros: Very affordable entry point; Steel construction feels substantial; Simple design with few failure points
Cons: Steel is heavier than aluminum options; Finish is prone to scratching if not maintained
7. Fill-Rite FR1210G06: Portable Option
Unlike permanent mount tanks, the Fill-Rite FR1210G06 offers portable fuel storage. We researched this unit for users who need to fuel ATVs, lawnmowers, or generators rather than their truck. The manual rotary pump is robust and requires no electricity, which adds to its reliability in remote locations.
However, the 12 gallon capacity limits its utility for extending pickup truck range significantly. In our evaluation, the manual pumping action becomes tedious when transferring large volumes. This product is not a replacement for a transfer tank but serves a specific niche for portable, low volume fueling.
- Portable fuel caddy with hand pump
- Heavy duty steel construction
- 8 foot hose with fill nozzle
Pros: Fully portable, no mounting required; Great for smaller equipment or ATVs; Durable wheels for easy transport
Cons: Manual pumping is labor intensive; Too small for extended truck range
Frequently Asked Questions
Are auxiliary fuel tanks legal for pickup trucks?
Yes, auxiliary fuel tanks are legal if they are certified by the DOT and used to store fuel for the vehicle’s primary engine. However, using a transfer tank to gravity feed directly into the main tank is often restricted by law and requires specific EPA compliant certifications. We researched these regulations and advise checking local laws regarding gravity feed versus pump systems.
What is the difference between aluminum and steel tanks?
Aluminum tanks are generally lighter and more resistant to rust, making them the preferred choice for longevity and fuel efficiency. Steel tanks are often less expensive and are very durable but are susceptible to corrosion over time if the finish is compromised. Our comparison shows that aluminum is the dominant material for modern transfer tanks due to these maintenance advantages.
Do transfer tanks come with pumps installed?
Many transfer tanks are sold as shells without pumps, allowing users to choose their own fuel delivery system. However, combo kits, like those from Dee Zee or Better Built, often include a 12 volt pump and hose assembly. We evaluated several models and found that combo kits offer better value for most buyers, though standalone tanks allow for custom pump configurations.
How do I secure a fuel tank in the truck bed?
Most manufacturers design tanks with mounting tabs that bolt directly to the truck bed or to a mounting kit. It is critical to use grade 5 or higher hardware and to bolt through the bed floor rather than just the bed rails if possible. Based on safety standards we reviewed, ensuring the tank is immobilized is the most important step to prevent dangerous movement in an accident.
Can I use a transfer tank for gasoline?
Yes, many transfer tanks are rated for both diesel and gasoline, but you must verify the specific certification. Gasoline is more flammable and requires tanks that meet stricter vapor pressure and spark free requirements. We compared spec sheets and found that while aluminum tanks are often suitable for both, some steel tanks are rated for diesel only. Always check the manufacturer label.
Our Verdict
After comparing specifications and analyzing owner feedback, the Dee Zee DZ91753P stands out as the best overall choice due to its robust 14 gauge build and integrated safety features. For those requiring maximum capacity and weld quality, the RDS 70258 is a strong runner up.
