We researched dozens of gravity feed fuel tanks that fit a truck bed and compared manufacturer specifications, industry safety standards, and aggregated owner feedback. In our evaluation we focused on capacity, material durability, ease of installation, and safety features.
This guide highlights the strengths and real-world limitations of each model so you can select the tank that matches your hauling needs and budget.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Scepter 12 Gallon Heavy Duty Truck Bed Fuel Tank Top Pick 12 gallon capacity, high impact polypropylene, 2-inch inlet and outlet. |
9.2 | 🛒 Check Price |
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UWS 10 Gallon Truck Bed Fuel Tank Best Value 10 gallon capacity, UV‑resistant HDPE, 1.5 inch fittings. |
8.7 | 🛒 Check Price |
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Raptor 10 Gallon Truck Bed Fuel Tank Best for Heavy Use 10 gallon, reinforced steel walls, 2 inch inlet/outlet. |
8.3 | 🛒 Check Price |
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Northeastern 6 Gallon Truck Bed Fuel Tank Compact Choice 6 gallon, high‑density polyethylene, 1.5 inch ports. |
7.9 | 🛒 Check Price |
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B&B 7 Gallon Heavy Duty Fuel Tank Best for Budget 7 gallon, polypropylene, 2 inch inlet/outlet. |
7.5 | 🛒 Check Price |
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Tanker 15 Gallon Heavy Duty Truck Bed Fuel Tank Maximum Capacity 15 gallon, double‑walled steel, 2 inch ports. |
7.3 | 🛒 Check Price |
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Mister Fuel 8 Gallon Truck Bed Fuel Tank Best for Easy Installation 8 gallon, UV‑resistant plastic, 2 inch fittings. |
8.0 | 🛒 Check Price |
1. Scepter 12 Gallon Heavy Duty Truck Bed Fuel Tank: Top Pick
The Scepter tank offers generous capacity and a tough polymer body, but its weight can strain a lightly built bed. We found that owners with heavier-duty pickups benefit from the extra strength, while lighter trucks may experience sagging over time.
If you prioritize maximum range and are comfortable adding a reinforcement bracket, this tank is an excellent choice. Light‑duty owners should consider a smaller, lighter model instead.
- Robust double-walled construction
- Integrated vent for safe gravity feed
- Compatible with most 2 inch fuel lines
Pros: High capacity for long hauls; Durable material resists cracks
Cons: Heavy when full; May require reinforcement of truck bed
2. UWS 10 Gallon Truck Bed Fuel Tank: Best Value
In our research the UWS tank stood out for offering solid capacity without adding excessive weight. The HDPE material holds up well under normal road conditions, but some owners reported minor dents after severe impacts.
For drivers who need a practical day‑to‑day tank on a midsize pickup, this model delivers value. Those who regularly haul heavy loads or drive off‑road should look at more reinforced options.
- Lightweight design
- Built‑in overflow vent
- Fits standard 1.5 inch fuel hoses
Pros: Good balance of capacity and weight; Resists UV degradation
Cons: Lower durability than steel tanks; Limited to lighter trucks
3. Raptor 10 Gallon Truck Bed Fuel Tank: Best for Heavy Use
The Raptor tank’s steel reinforcement provides excellent protection against dents and punctures, making it a solid choice for rugged work trucks. However, its weight adds significant load to the rear axle, which can affect handling if not balanced.
Choose this tank if you regularly encounter harsh terrain or need a tank that can survive impacts. Users with lighter duty trucks or those who lack welding capability may prefer a lighter polymer model.
- Steel reinforced for impact resistance
- Integrated safety valve
- Designed for off‑road vibration
Pros: Very strong construction; Handles rough terrain
Cons: Heavier than plastic alternatives; Installation may need welding
4. Northeastern 6 Gallon Truck Bed Fuel Tank: Compact Choice
The Northeastern tank is ideal for smaller pickups where space is at a premium. Its HDPE construction offers decent durability, but the reduced volume means more frequent refueling on longer trips.
If your primary concern is preserving cargo space and you run short routes, this model works well. For extended journeys or larger trucks, a higher‑capacity tank will be more practical.
- Compact size fits smaller beds
- Impact resistant plastic
- Pre‑drilled mounting holes
Pros: Saves space; Lightweight
Cons: Limited capacity; May not fit larger trucks
5. B&B 7 Gallon Heavy Duty Fuel Tank: Best for Budget
The B&B tank provides an affordable entry point for owners who need a basic gravity feed solution. While the polypropylene shell meets basic safety standards, some users reported seam fatigue after repeated loading cycles.
Buyers on a tight budget who use their truck for occasional work trips will find this tank sufficient. Those expecting heavy daily use should consider a more robust construction.
- Budget‑friendly material
- Standard 2 inch fittings
- Simple installation
Pros: Low cost; Adequate for moderate use
Cons: Lower durability under harsh conditions; May develop leaks over time
6. Tanker 15 Gallon Heavy Duty Truck Bed Fuel Tank: Maximum Capacity
The Tanker 15‑gallon model gives the longest range among the options we examined, but its steel walls add substantial weight. Installation often demands additional bracing to keep the bed from sagging under the load.
If you routinely travel long distances and can accommodate the extra weight, this tank meets that need. Otherwise, a smaller tank will be easier to manage and less likely to affect vehicle handling.
- Largest capacity for extended trips
- Reinforced steel for durability
- Integrated vent and overflow
Pros: Great for long range; Strong construction
Cons: Very heavy when full; May require chassis reinforcement
7. Mister Fuel 8 Gallon Truck Bed Fuel Tank: Best for Easy Installation
The Mister Fuel tank’s snap‑fit brackets and pre‑attached vent hose make it one of the quickest to mount on a truck bed. Its UV‑resistant plastic holds up well under sunlight, but the material can become brittle after repeated impacts.
For drivers who need a straightforward installation and mostly stay on paved roads, this tank is a solid pick. Off‑road enthusiasts should look for a steel‑based tank with higher impact resistance.
- Snap‑fit mounting brackets
- UV‑resistant material
- Pre‑attached vent hose
Pros: Quick install; Resists sun damage
Cons: Plastic may crack under impact; Not for heavy off‑road use
Frequently Asked Questions
How do I install a gravity feed fuel tank in my truck bed?
We researched installation guides from manufacturers and found that most tanks require mounting brackets, a drilled opening for the inlet/outlet, and a vent line to the atmosphere. Secure the tank with bolts, connect fuel lines using the appropriate fittings, and ensure the vent hose is routed to avoid fuel splashing.
What safety considerations should I keep in mind?
Based on industry safety standards, the tank must have a pressure‑relief valve, proper venting, and be mounted to prevent movement during braking. Use fuel‑rated hose, avoid placing the tank near heat sources, and follow local regulations for fuel storage.
Can I use gasoline or diesel in these tanks?
All of the reviewed tanks are compatible with both gasoline and diesel, as long as the material is rated for the fuel type. Polypropylene and HDPE models are generally safe for gasoline, while steel tanks handle diesel without issue.
How do I prevent fuel spillage during refueling?
Owner feedback emphasizes using a funnel with a secure seal, keeping the vent hose clear, and refilling slowly to avoid over‑pressurizing the tank. Many models include an overflow vent that reduces spillage risk.
Are there legal regulations for aftermarket fuel tanks?
We compared state guidelines and found that most jurisdictions require the tank to be securely mounted, have a vent to the atmosphere, and meet DOT standards for fuel containers. Always check local laws before installing an aftermarket tank.
Our Verdict
Our top pick is the Scepter 12 Gallon Heavy Duty Truck Bed Fuel Tank for its exceptional capacity, durability, and safety features. The runner‑up, the UWS 10 Gallon Truck Bed Fuel Tank, offers a strong value proposition with lighter weight and UV‑resistant construction.
