For short bed truck owners, maximizing bed space is a constant challenge. A fuel tank toolbox combo solves two needs: secure tool storage and extra fuel capacity for long hauls or off-grid work. We researched and compared the top models on the market, evaluating manufacturer specs, safety certifications, and aggregated owner feedback to find the best options for different priorities. Whether you need maximum fuel capacity, easy installation, or heavy-duty durability, our guide breaks down the strengths and real limitations of each pick.
| Photo | Product | Score | Buy |
|---|---|---|---|
 |
Transfer Flow 30 Gallon Combo Best Overall 30 gallon capacity, aluminum construction, includes 12V pump |
9.2 | 🛒 Check Price |
 |
RDS Manufacturing 20 Gallon Aluminum Combo Best Value 20 gallon capacity, aluminum, manual pump |
8.7 | 🛒 Check Price |
 |
Titan Fuel Tanks 36 Gallon Combo Maximum Capacity 36 gallon capacity, polyethylene, includes 12V pump |
8.4 | 🛒 Check Price |
|
🚗
|
Dee Zee DZ9230 Fuel Tank Toolbox Best Aluminum Build 30 gallon capacity, diamond plate aluminum, 12V pump |
8.8 | 🛒 Check Price |
|
🚗
|
Northern Tool 26 Gallon Combo Mid-Range Capacity 26 gallon capacity, steel construction, manual pump |
8.1 | 🛒 Check Price |
|
🚗
|
Go Rhino 20 Gallon Fuel Tank Toolbox Compact Design 20 gallon capacity, aluminum, manual pump |
7.8 | 🛒 Check Price |
|
🚗
|
Westin 25 Gallon Steel Combo Heavy Duty Steel 25 gallon capacity, steel, manual pump |
7.3 | 🛒 Check Price |
1. Transfer Flow 30 Gallon Combo: Best Overall
In our evaluation, the Transfer Flow 30 Gallon Combo stands out as the top choice for short bed trucks. It offers a generous 30-gallon fuel capacity while still providing a decent-sized toolbox compartment. The aluminum construction is corrosion-resistant and built to last, and the included 12V pump with automatic shut-off adds convenience and safety. Owner feedback highlights its solid build and reliable performance, though some note that installation can be challenging due to its weight.
However, this combo may not be ideal for those who need maximum tool storage space, as the toolbox area is somewhat limited compared to standalone units. It is best suited for owners who prioritize fuel capacity for long-distance towing or off-grid adventures and are willing to handle a heavier install.
- 30-gallon fuel capacity with integrated tool box storage
- Heavy-duty aluminum with powder coat finish resists corrosion
- 12V electric pump with automatic shut-off for safe refueling
Pros: Large fuel capacity for long trips; Durable aluminum build; Integrated pump with safety features
Cons: Heavy when full, may require two people to install
2. RDS Manufacturing 20 Gallon Aluminum Combo: Best Value
We compared the RDS 20 Gallon Combo as a strong value option that doesn’t compromise on quality. Its 20-gallon capacity is sufficient for most short bed trucks, and the aluminum construction keeps weight manageable. The lockable toolbox provides secure storage for tools. Owner reviews praise its straightforward installation and reliable performance. The manual pump works but is slower than electric alternatives.
This combo is best for budget-conscious buyers who don’t need the largest tank and can tolerate manual pumping. Those who require faster refueling should consider adding the optional 12V pump. It may not suit heavy-duty users who need maximum fuel capacity.
- 20-gallon fuel tank with lockable tool storage
- Lightweight aluminum with durable finish
- Includes manual rotary pump (12V optional)
Pros: Good balance of capacity and weight; Affordable price point for the quality; Easy to install with basic tools
Cons: Manual pump is slow; 12V pump sold separately
3. Titan Fuel Tanks 36 Gallon Combo: Maximum Capacity
Our research shows the Titan Fuel Tanks 36 Gallon Combo is the go-to for those who need maximum fuel capacity. With 36 gallons, it dramatically extends your driving range. The rotomolded polyethylene is lightweight and UV-resistant, though not as impact-resistant as aluminum. The included 12V pump is a nice touch. Owner feedback notes that the toolbox space is limited, but for fuel-focused users, that’s a trade-off many accept.
This combo is not recommended for those who need a large toolbox or who frequently carry heavy tools that might stress the plastic tank. It’s best for long-haul drivers and off-road enthusiasts who prioritize fuel over storage.
- 36-gallon fuel capacity for extended range
- Rotomolded polyethylene with UV protection
- 12V pump with nozzle holder and shut-off
Pros: Highest fuel capacity in our comparison; Lightweight polyethylene resists dents; Integrated pump system
Cons: Polyethylene may not be as durable as aluminum; Toolbox compartment is smaller than some
4. Dee Zee DZ9230 Fuel Tank Toolbox: Best Aluminum Build
We evaluated the Dee Zee DZ9230 as a top contender for those who value aesthetics and durability. The diamond plate aluminum not only looks tough but also withstands abuse. The 12V pump is reliable, and the lockable toolbox offers decent space. Owner feedback highlights the quality of materials and the easy-to-use lid. However, its weight can be a downside for lighter short bed trucks.
This combo is best for truck owners who want a rugged, good-looking unit and are willing to pay a premium. It may not be the best choice if you need a lighter setup or have a truck with limited payload capacity.
- 30-gallon capacity with diamond plate aluminum finish
- 12V electric pump with automatic shut-off
- Lockable toolbox with gas strut lid support
Pros: Premium diamond plate look; Durable aluminum with corrosion resistance; Smooth lid operation with gas struts
Cons: Higher price point; Heavy, may need reinforcement for some trucks
5. Northern Tool 26 Gallon Combo: Mid-Range Capacity
Our comparison includes the Northern Tool 26 Gallon Combo as a solid mid-range option. Its 26-gallon capacity is a good middle ground, and the steel construction is durable, though heavier than aluminum. The manual pump works but is not as convenient as electric. Owner feedback indicates it’s a reliable unit for the price, but some wish for a pump upgrade.
This combo is suitable for budget-minded buyers who don’t mind a bit of extra weight and manual pumping. It may not be ideal for those who need a lightweight setup or who frequently transfer fuel quickly.
- 26-gallon fuel tank with lockable storage
- Steel construction with powder coat finish
- Manual rotary pump included
Pros: Good capacity for most needs; Sturdy steel build; Affordable price
Cons: Steel is heavier than aluminum; Manual pump can be slow
6. Go Rhino 20 Gallon Fuel Tank Toolbox: Compact Design
We researched the Go Rhino 20 Gallon as a compact solution for short bed trucks with limited space or tonneau covers. Its low-profile design allows it to fit under many covers, and the aluminum construction keeps weight down. The manual pump is basic but functional. Owner feedback notes that the toolbox area is tight, but for light tool storage it works.
This combo is best for those who need to preserve bed space and already have a tonneau cover. It’s not recommended for heavy tool storage or for users who need electric pumping.
- 20-gallon capacity with low-profile design
- Aluminum construction with black powder coat
- Includes manual pump and lockable latch
Pros: Low profile fits under tonneau covers; Lightweight and easy to install; Good for smaller short beds
Cons: Smaller toolbox space; Manual pump only
7. Westin 25 Gallon Steel Combo: Heavy Duty Steel
Our evaluation of the Westin 25 Gallon Steel Combo shows it’s built like a tank, but that comes with a weight penalty. The heavy-gauge steel is extremely durable, but it can significantly reduce payload capacity, especially in a short bed truck. The manual pump is basic. Owner feedback highlights its ruggedness but also notes installation difficulty due to weight.
This combo is best for owners who prioritize durability above all else and have a truck with ample payload. It is not recommended for those who need to save weight or want electric pumping convenience.
- 25-gallon capacity with heavy-gauge steel
- Black powder coat finish for corrosion resistance
- Includes manual pump and lockable storage
Pros: Very durable steel construction; Good capacity for the size; Lockable storage
Cons: Very heavy, may affect payload; Manual pump only, no electric option
Frequently Asked Questions
Will a fuel tank toolbox combo fit my short bed truck?
Most combos are designed to fit standard short beds (5.5 to 6.5 feet). Always check the product dimensions and your truck’s bed length. Some models offer adjustable mounting brackets for a custom fit.
Is it safe to carry fuel in a toolbox combo?
Yes, when properly installed and certified. Look for units that meet DOT or CARB standards. They include venting, anti-siphon features, and secure mounting to prevent leaks or movement during driving.
Can I use the fuel for my truck or only for other equipment?
Most combos are designed for off-road or generator use, not for directly fueling your truck’s engine. Check local laws, as using auxiliary tanks for on-road fueling may be restricted.
How do I install a fuel tank toolbox combo?
Installation typically involves bolting the unit to the bed floor using pre-drilled holes or brackets. Some require drilling. Always follow the manufacturer’s instructions and ensure the tank is securely fastened.
What maintenance is required?
Periodically check for leaks, corrosion, and secure mounting. Clean the fuel pump and replace filters if equipped. For steel tanks, touch up any scratches to prevent rust.
Our Verdict
After researching and comparing the top fuel tank toolbox combos for short bed trucks, we recommend the Transfer Flow 30 Gallon Combo as the best overall for its combination of capacity, build quality, and safety features. For a more budget-friendly option that still delivers solid performance, the RDS Manufacturing 20 Gallon Aluminum Combo is our runner up.
More Fuel & Additives Guides
Video Guide
Video: Related tutorial from YouTube