Looking for the best auxiliary fuel tanks? We’ve rounded up the top 10 options to give you extra fuel capacity with tough, reliable designs.
Auxiliary fuel tanks are a game-changer for anyone needing extra fuel capacity. Whether you’re on long trips or tough jobs, these tanks keep you moving. We’ve found the best options to fit your needs.
RDS MFG INC and Dee Zee lead the pack with tough, reliable designs. From 20-gallon to 91-gallon tanks, there’s a size for every setup. Many include toolbox combos or pumps for added convenience.
Ready to find the perfect auxiliary fuel tank? Let’s explore the top picks and make your choice easy.
List of Top 10 Auxiliary Fuel Tanks
| Image | Title | Best For | Price |
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RDS MFG INC Rectangular Auxiliary Fuel Tank – 69 Gallon |
This fuel tank is perfect for truck owners and long-haul drivers who need extra fuel capacity. It’s also great for anyone who wants reliable, safe fueling on the road. |
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RDS MFG INC Fuel Tank – 60-Gallon |
This fuel tank is perfect for truck owners who need extra capacity for long trips or heavy work. It’s ideal for those who want safe, reliable fueling without worrying about running out. |
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RDS MFG INC Auxiliary Fuel Tank 37Gal – 71804 |
This auxiliary fuel tank is perfect for truck owners and outdoor workers who need extra fuel on the go. It’s ideal for anyone who wants more capacity and safe fueling without stopping often. |
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RDS MFG INC 71083 Rectangular Auxiliary/Transfer Fuel Tank – 45 Gallon Capacity |
This 45-gallon fuel tank is perfect for anyone needing extra fuel for long trips or remote work. Its rust-free aluminum and durable design make it ideal for tough conditions. |
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RDS MFG INC – 72548 Fuel Transfer Tank/Auxiliary Fuel Tank/Toolbox Combo – 60 Gallon |
This 60-gallon fuel transfer tank and toolbox combo is perfect for truck owners who need extra fuel storage and secure tool storage. It’s ideal for long trips, work, or outdoor adventures. |
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RDS MFG INC 71791 Rectangular Transfer Liquid Tank – 91 Gallon Capacity |
This 91-gallon transfer tank is perfect for contractors, farmers, and truck owners who need to move large amounts of fuel with ease. It’s ideal if you want extra capacity and a safe, simple setup for short-bed trucks. |
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Rds Aluminum 74551 20 Gal Rectangular Auxiliary Fuel Tank44 |
This 20-gallon auxiliary fuel tank is perfect for drivers who need extra fuel capacity for long trips or heavy-duty work. It’s ideal for trucks and large vehicles that demand reliability. |
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TAURISH Auxiliary Fuel Tank Workshop Tool Balancing Carbs Carburettor |
This tool is perfect for DIY mechanics and motorcycle enthusiasts who love tuning and balancing their own carburettors. It’s also great for anyone working on cars, trucks, boats, tractors, or farm machinery. |
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Dee Zee DZ92556NSB Transfer Tank |
This transfer tank is perfect for truck owners who need tough, reliable fuel storage. It’s built for people who want strength, stability, and safety on the road. |
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RDS Fuel Transfer/Auxiliary Tank/Toolbox Combo with 8 Gpm Pump – 60-Gal. Capacity |
This fuel transfer combo is perfect for contractors, farmers, and truck owners who need fast, reliable fueling on the go. It’s built tough, easy to use, and ready for anyone who values strength and convenience. |
Detailed Reviews
Discover the Best Auxiliary Fuel Tanks with our expert guide. We highlight the top 10 tanks chosen through trusted analysis and real customer feedback. Each tank’s features and performance are explained clearly so you can pick with confidence. Simple, reliable, and packed with value—this guide makes finding the right tank easy.
1. RDS MFG INC Rectangular Auxiliary Fuel Tank – 69 Gallon
This RDS MFG INC Rectangular Auxiliary Fuel Tank gives you extra fuel power. It holds 69 gallons. It is built strong and reliable.
It fits many setups with different sizes and capacities. You can use it with gasoline when siphoned from the top using an electric fuel pump.
The tank measures 57″ L x 18″ W x 16″ H. It weighs about 43.5 kilograms.
| Pros | Cons |
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Perfect For:
This fuel tank is perfect for truck owners and long-haul drivers who need extra fuel capacity. It’s also great for anyone who wants reliable, safe fueling on the road.
Ready to Purchase?
2. RDS MFG INC Fuel Tank – 60-Gallon
RDS MFG INC offers a 60-gallon fuel tank designed for reliable fuel storage. This tank is part of a full assortment of sizes and shapes to fit your needs.
Gasoline auxiliary fueling is allowed with this tank. Use an electric fuel pump to siphon from the top. Do not transfer gasoline to another vehicle.
This tank fits some short beds. Measure before ordering to ensure a proper fit. Follow all safety guidelines for safe fuel handling.
| Pros | Cons |
|---|---|
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Perfect For:
This fuel tank is perfect for truck owners who need extra capacity for long trips or heavy work. It’s ideal for those who want safe, reliable fueling without worrying about running out.
Ready to Purchase?
3. RDS MFG INC Auxiliary Fuel Tank 37Gal – 71804
The RDS MFG INC Auxiliary Fuel Tank holds 37 gallons of fuel. It’s a reliable choice for extra storage. The model number is 71804.
This tank is designed for gasoline. Use an electric fuel pump to siphon from the top. It’s easy to install and use.
RDS offers various tank sizes to fit your needs. This product comes in a single package. It’s a practical solution for fuel storage.
| Pros | Cons |
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Perfect For:
This auxiliary fuel tank is perfect for truck owners and outdoor workers who need extra fuel on the go. It’s ideal for anyone who wants more capacity and safe fueling without stopping often.
Ready to Purchase?
4. RDS MFG INC 71083 Rectangular Auxiliary/Transfer Fuel Tank – 45 Gallon Capacity
Strong, tough, and built to last. This RDS 45-gallon fuel tank gives you extra capacity when you need it. No rust, no worries, just reliable performance.
It has fully welded seams for strength. The aluminum body means zero rust.
You can even use it for gasoline auxiliary fueling with an electric pump. RDS offers many sizes and options to fit your needs.
| Pros | Cons |
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Perfect For:
This 45-gallon fuel tank is perfect for anyone needing extra fuel for long trips or remote work. Its rust-free aluminum and durable design make it ideal for tough conditions.
Ready to Purchase?
5. RDS MFG INC – 72548 Fuel Transfer Tank/Auxiliary Fuel Tank/Toolbox Combo – 60 Gallon
This fuel transfer tank is built tough. It holds 60 gallons of fuel. It also doubles as a toolbox.
Made in the United States, it’s strong and reliable. The auto accessory design makes it easy to use. The package size is compact for its capacity.
You get fuel storage and tool space in one. It’s a smart, heavy-duty choice.
| Pros | Cons |
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Perfect For:
This 60-gallon fuel transfer tank and toolbox combo is perfect for truck owners who need extra fuel storage and secure tool storage. It’s ideal for long trips, work, or outdoor adventures.
Ready to Purchase?
6. RDS MFG INC 71791 Rectangular Transfer Liquid Tank – 91 Gallon Capacity
Strong, solid, and ready. The RDS 71791 Tank holds 91 gallons. Built for tough jobs.
It allows gasoline auxiliary fueling with an electric pump. The tank comes alone, no pump or hose.
It can fit some short beds. Always measure before ordering.
| Pros | Cons |
|---|---|
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Perfect For:
This 91-gallon transfer tank is perfect for contractors, farmers, and truck owners who need to move large amounts of fuel with ease. It’s ideal if you want extra capacity and a safe, simple setup for short-bed trucks.
Ready to Purchase?
7. Rds Aluminum 74551 20 Gal Rectangular Auxiliary Fuel Tank44
Strong, tough, and built to last. The Rds Aluminum 74551 fuel tank is made for real work. It holds 20 gallons with confidence.
Every tank is 100% pressure tested. Seams are fully welded for strength. You get heavy-duty brackets for secure mounting.
No leaks. No worries. Made in the United States. Ready for the road.
| Pros | Cons |
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Perfect For:
This 20-gallon auxiliary fuel tank is perfect for drivers who need extra fuel capacity for long trips or heavy-duty work. It’s ideal for trucks and large vehicles that demand reliability.
Ready to Purchase?
8. TAURISH Auxiliary Fuel Tank Workshop Tool Balancing Carbs Carburettor
The TAURISH Auxiliary Fuel Tank is built for easy DIY servicing. It makes carburettor balancing simple. Use it on motorcycles, cars, trucks, boats, tractors, and more.
It holds 300ml fuel with clear measuring lines. Comes with an on/off tap and a handlebar strap for quick setup.
| Pros | Cons |
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Perfect For:
This tool is perfect for DIY mechanics and motorcycle enthusiasts who love tuning and balancing their own carburettors. It’s also great for anyone working on cars, trucks, boats, tractors, or farm machinery.
Ready to Purchase?
9. Dee Zee DZ92556NSB Transfer Tank
The Dee Zee DZ92556NSB Transfer Tank is a heavy-duty solution for your truck. Made from 14-gauge steel, it’s built to last.
Its radius curve design removes weak spots, ensuring long-lasting strength. Stability baffles keep the fuel steady, and a drain plug makes it easy to empty.
Mounting tabs secure it to your truck bed. It holds 42 gallons and is ready for any job.
| Pros | Cons |
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Perfect For:
This transfer tank is perfect for truck owners who need tough, reliable fuel storage. It’s built for people who want strength, stability, and safety on the road.
Ready to Purchase?
10. RDS Fuel Transfer/Auxiliary Tank/Toolbox Combo with 8 Gpm Pump – 60-Gal. Capacity
This RDS Fuel Transfer/Auxiliary Tank/Toolbox Combo is built tough. It holds a 60-gallon capacity for serious fuel storage. With fully welded seams, it’s made to last.
The 8 Gpm pump moves fuel fast. A spin collar makes pump setup quick and easy.
| Pros | Cons |
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Perfect For:
This fuel transfer combo is perfect for contractors, farmers, and truck owners who need fast, reliable fueling on the go. It’s built tough, easy to use, and ready for anyone who values strength and convenience.
Ready to Purchase?
Buying Guide
Finding the right auxiliary fuel tank makes long trips easier. Extra fuel means fewer stops. Strong designs keep you moving with confidence.
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Capacity: Choose a tank that matches your driving needs. Small tanks are light and easy to fit. Large tanks give more range but need more space.
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Material: Look for aluminum or steel. Aluminum resists rust and is lighter. Steel is heavier but very strong.
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Design: Some tanks come with toolbox combos or pumps. These add convenience and save space. Pick what fits your setup.
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Fitment: Always measure your truck bed before buying. Short beds may not fit larger tanks. A proper fit ensures safety and stability.
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Fuel Type: Many tanks allow gasoline auxiliary fueling with an electric pump. Always follow safety rules. Never transfer fuel directly to another vehicle.
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Durability: Check for fully welded seams and pressure testing. These features prevent leaks and ensure long-lasting use.
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Ease of Use: Features like drain plugs, mounting tabs, and clear measuring lines make handling fuel simple.
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Brand Reliability: Trusted names like RDS MFG INC and Dee Zee are known for strong, reliable tanks. Choosing a proven brand reduces risk.