The Best In Bed Auxiliary Fuel Tank for Reliable Vehicle Support, Reviewed

If your adventures or work require long-distance travel or heavy-duty towing, having an auxiliary fuel tank installed can be a game-changer. These tanks provide extra fuel capacity, reducing the need for frequent stops and ensuring your vehicle remains fueled during critical moments.

In this review, we’ll explore some of the best in bed auxiliary fuel tanks available on Amazon, focusing on their features, durability, ease of installation, and overall value. Whether you’re a professional contractor, off-road enthusiast, or someone who simply needs extended range, you’ll find options here that suit your specific needs.

RDS MFG INC Rectangular Auxiliary Fuel Tank – Versatile Capacity for Various Needs

This 69-gallon rectangular auxiliary fuel tank from RDS MFG INC is designed to fit a broad range of vehicles, offering ample capacity for those who need extended fuel range. Its rectangular shape allows for easy installation in confined spaces, making it suitable for trucks, RVs, or large SUVs.

The tank’s construction supports gasoline auxiliary fueling, which can be siphoned from the top using an electric fuel pump, ensuring quick and spill-free refueling. The package dimensions of 57 inches in length, 18 inches in width, and 16 inches in height make it manageable for most truck beds, while its weight of approximately 43.5 kilograms indicates a sturdy build.

RDS’s focus on offering a full assortment of tanks in various capacities means you can find a model that perfectly fits your vehicle and usage. Its compatibility with gasoline fuels makes it versatile for different applications, from emergency reserves to long-haul trips.

View all product features

• RDS offers a full assortment of tanks in various capacities and dimensions to fit your needs
• Gasoline auxiliary fueling is allowed, if siphoned from the top of the tank by using an electric fuel pump
• Package Dimensions: 57.0 " L x 18.0 " W x 16.0 " H
• Package Weight: 43.545 kilograms

---

Vigorighter Aluminum Fuel Transfer Tank Toolbox Combo – Space-Saving and Multi-Functional

Designed for maximum utility, the Vigorighter 51-gallon aluminum fuel transfer tank combines a robust fuel tank with an integrated toolbox, making it an ideal choice for work trucks and off-road vehicles. Its compact footprint of roughly 58 inches long, 19 inches wide, and 20 inches tall allows for installation in tight truck beds without sacrificing storage or fuel capacity.

The heavy-duty aluminum construction ensures resistance to corrosion and harsh working conditions, extending the lifespan of the unit. The included 12 GPM 12V DC pump, with a 13-foot hose and auto-shutoff nozzle, simplifies refueling operations—allowing spill-free transfers directly from the tank to your vehicle or equipment.

This combo unit is compatible with gasoline, diesel, kerosene, and mineral oil, providing versatility across different fuels. Its integrated toolbox provides additional storage for tools or accessories, optimizing space in your vehicle bed.

View all product features

• Heavy-Duty All-in-One Combo: This space-saving unit combines a full-size 51-gallon auxiliary fuel tank with a built-in toolbox, all crafted from rugged corrosion-resistant aluminum for maximum durability. Its compact footprint (overall 58.1"L x 19"W x 20"H, toolbox: 31"L x 19"W x 8.8"H) maximizes truck bed space, letting you haul fuel, tools, and cargo in one go.
• Rugged Corrosion-Resistant Build: Built to last, the entire unit features heavy-duty, corrosion-resistant aluminum construction. This rugged build is designed to endure tough conditions, ensuring reliable performance and long-term service on any worksite or road.
• Plug-and-Play Pump Kit: The included high-flow 12V DC fuel transfer pump (12 GPM) with a 13 ft hose and auto-shutoff nozzle delivers spill-free refueling directly in the field. Simply connect to a power source—installation is a breeze. Get true plug-and-play convenience.
• Universal Power & Fuel Use: Designed for ultimate versatility, the pump easily connects to any 12V battery (vehicle or standalone) and safely handles gasoline, diesel, kerosene, and mineral oil. It's the perfect refueling partner for trucks, tractors, boats, mowers, generators, and more.
• Overheat-Protected Motor: Engineered for dependable use, the pump features an intermittent-duty motor with a built-in thermal protector to prevent overheating. For maximum pump life, we recommend a 30-minute cooldown after extended pumping sessions.

---

RDS MFG INC Auxiliary Fuel Tank 37Gal – Compact and Dependable

This 37-gallon auxiliary fuel tank from RDS MFG INC offers a reliable option for those seeking a smaller, more manageable fuel solution. Its compact size makes it ideal for vehicles with limited space, while still providing substantial fuel capacity for extended trips or emergencies.

The tank supports gasoline auxiliary fueling through siphoning from the top, facilitated by an electric fuel pump. It’s constructed to meet high standards of durability and safety, ensuring dependable performance in various conditions.

While smaller than some other options, this tank is perfect for users who prioritize portability and ease of installation without sacrificing essential capacity. RDS’s reputation for quality ensures you’re getting a product built to last.

View all product features

• RDS offers a full assortment of tanks in various capacities and dimensions to fit your needs
• Gasoline auxiliary fueling is allowed, if siphoned from the top of the tank by using an electric fuel pump
• Product Type – MOTOR ENGINE FUEL TANK
• Item Package Quantity – 1

---

RDS MFG INC – 72548 Fuel Transfer Tank Toolbox Combo – All-in-One Solution

The RDS MFG INC 60-gallon fuel transfer tank and toolbox combo is designed to streamline your fueling and storage needs. Its robust aluminum construction withstands tough environments, making it a dependable addition to work trucks and utility vehicles.

Measuring approximately 53 inches long, 19 inches wide, and 20 inches tall, this combo provides ample fuel capacity alongside a practical toolbox for tools or accessories. The unit is built for easy installation and long-term durability, with features like welded seams and heavy-duty mounting brackets.

Its design facilitates quick fuel transfers, supporting both gasoline and diesel fuels, making it suitable for various vehicle types and work scenarios. Whether on-site or on the road, this combo offers convenience and reliability.

View all product features

• Product Type:Auto Accessory
• Item Package Dimension:53.34 Centimeters L X 53.34 Centimeters W X 142.24 Centimeters H
• Country Of Origin: United States
• Item Package Weight:54.431 Kilograms

---

RDS Fuel Transfer/Auxiliary Tank with 8 GPM Pump – Heavy-Duty Performance

This 60-gallon auxiliary tank from RDS MFG INC emphasizes durability with its fully welded seams and heavy-duty aluminum construction. Designed for demanding environments, it offers a reliable fuel solution for long trips or heavy usage.

The tank includes spin collar fittings for straightforward pump installation, and the 8 GPM pump ensures efficient fuel transfer. Its sturdy mounting brackets make installation secure and stable, even on rough terrains.

While slightly smaller in pump flow rate compared to other models, this tank balances capacity with robustness, making it suitable for users who prioritize longevity and consistent performance in tough conditions.

View all product features

• Fully welded seams
• Heavy-duty aluminum mounting brackets
• Spin collar allows for easy pump installation

---

RDS MFG INC Fuel Tank Tool Combo – Versatile Storage and Fueling

This 60-gallon model from RDS MFG INC offers an effective combination of fuel storage and tool organization, making it suitable for work trucks or off-road adventures. Its design supports gasoline fueling via siphoning from the top, with a focus on safety and ease of use.

The tank’s construction is built to withstand harsh conditions, with features that promote safety and long-term use. Its size provides sufficient fuel capacity for extended trips, while the integrated tools compartment helps keep your gear organized.

Note that this model is not intended for gasoline, which is an important consideration depending on your fuel type needs.

View all product features

• RDS offers a full assortment of tanks in various capacities and dimensions to fit your needs
• Gasoline auxiliary fueling is allowed, if siphoned from the top of the tank by using an electric fuel pump
• Not intended to be used for gasoline

---

RDS MFG INC 70387 Auxiliary Fuel Tank – Compact and Efficient

The 40-gallon auxiliary fuel tank from RDS MFG INC is designed for users who need a compact yet reliable fuel solution. Its smaller size makes it easier to install on vehicles with limited space, while still providing enough capacity for longer trips.

The tank features a sturdy construction suitable for gasoline fuels, with siphoning capabilities from the top using an electric pump. Its size and weight make it manageable for many vehicle types, especially those that prioritize maneuverability without sacrificing fuel capacity.

This model is perfect for users who want a balance between size, capacity, and performance, without the bulk of larger tanks.

View all product features

• Product Type :Auto Accessory
• Package Dimensions :22.86 Cm L X50.8 Cm W X152.4 Cm H
• Country Of Origin :United States
• Package Weight :84.0Lbs

---

RDS Fuel Transfer/Auxiliary Tank with 15 GPM Pump – Large Capacity and Fast Transfer

This 90-gallon auxiliary tank offers an impressive capacity for those who need extensive fuel reserves. Equipped with a 15 GPM pump, it enables rapid fuel transfers, making it suitable for large trucks, agricultural equipment, or emergency backup scenarios.

The tank’s features include a sturdy design with welded seams, corrosion-resistant construction, and comprehensive mounting hardware. The sizeable dimensions of nearly 60 inches long, over 81 inches wide, and almost 145 inches tall mean it’s best suited for larger vehicles or dedicated installation areas.

Its high-flow pump reduces downtime during refueling, a crucial benefit for professionals who need to minimize operational delays.

View all product features

• Product Type:Auto Accessory
• Item Package Dimension:59.69 cm L X 81.28 cm W X 144.78 cm H
• Country Of Origin: United States
• Item Package Weight:86.636 kg

---

BLACKHORSE-RACING 51 Gallons Aluminum Fuel Transfer Tank – Durable and Efficient

From BLACKHORSE-RACING, this 51-gallon aluminum fuel transfer tank combines durability with efficiency. Its black aluminum construction resists rust and corrosion, making it suitable for both gasoline and diesel fuels.

The tank features a 10 GPM fuel transfer pump with an automatic refueling nozzle, a 13.1-foot hose, and a large capacity for extended trips. Its size—50 inches long, 19 inches wide, and 21 inches tall—fits well in most truck beds, and its all-foam padded cover helps prevent bending or warping.

This model offers a practical and sturdy solution for those looking to extend their vehicle’s range with a reliable, corrosion-resistant tank.

View all product features

• Strong Material- The fuel transfer tank toolbox combo is made of black aluminum,which is durable, rust & corrosion-resistant. It comes with a key and can be used immediately after opening. It is a reliable and convenient fuel transfer tool
• High Efficiency Pump Performance- 10GPM 12V DC fuel pump on the drive side with automatic refueling nozzle and 13.1ft hose for fast refueling(The package does not contain a filter)
• Perfect Packaging- The patented all-foam cover forms a rigid wall between the outer aluminum layers to help prevent the tank from bending or warping
• Capacity- 51 Gallons auxiliary fuel tank size -50'L x 19'W x 21'H, large enough fuel storage capacity to carry diesel or gasoline, top toolbox-31'L x 19'W x 8.8'H,the toolbox is large enough to carry other items you need to carry
• Automatic Refueling Nozzle- The nozzle is made of high-quality aluminum alloy and PVC material, and stops the fuel flow after filling the oil tank,effectively preventing fuel overflow and improving the safety of refueling
• Attention! The package contains a general instruction manual for the pump, which is for reference only. The actual accessories received will be the final ones

---

Buyer’s Guide: What to Consider

Choosing the right in bed auxiliary fuel tank involves considering multiple factors to ensure it meets your specific needs. From capacity and material to installation ease, making an informed decision can significantly enhance your vehicle’s range and operational efficiency.

• Capacity Needs: Determine how much additional fuel capacity you require based on your typical travel distances and fuel consumption to choose the right tank size.
• Fuel Compatibility: Ensure the tank supports the type of fuel you use—gasoline, diesel, or both—and check if siphoning or electric pumps are needed for refueling.
• Material Durability: Opt for corrosion-resistant materials like aluminum or coated steel to withstand harsh conditions and extend the tank’s lifespan.
• Installation & Space: Measure available space in your vehicle’s bed or mounting area and select a tank with compatible dimensions for a secure fit.
• Pump Performance & Features: Evaluate the flow rate (GPM), pump type, and nozzle features to ensure efficient, spill-free refueling suited to your operational needs.
• Additional Features: Look for integrated toolboxes, all-foam covers, or quick-connect fittings that add convenience and protection for your investment.
• Ease of Installation & Maintenance: Choose tanks with straightforward mounting options and accessible components to simplify installation and routine upkeep.

Conclusion

Investing in a quality auxiliary fuel tank can dramatically improve your vehicle’s range and productivity, especially for long trips or demanding work scenarios. The options reviewed here offer a range of capacities, materials, and features designed to meet diverse needs.

Ultimately, selecting the best auxiliary tank depends on your vehicle size, fuel type, and operational environment. Prioritize durability, capacity, and ease of refueling to ensure your choice serves you well over time.