Whether you’re boosting range for on‑site work or need additional storage with a fuel supply, a truck auxiliary fuel tank toolbox combo offers a practical, all‑in‑one solution. This guide highlights five top options and clarifies who benefits most from each. The selections emphasize durability, ease of installation, and real‑world usefulness for fleet operators, contractors, and DIY enthusiasts alike. The following table provides a quick snapshot of the featured products.
| Product | Best For | Capacity | Material |
|---|---|---|---|
| Dee Zee DZ92647SB (92 gallon) Black Steel Combo Transfer Tank & Tool Box | Rugged use, steel build | 92 gallons | Steel |
| RDS MFG INC – 72548 Fuel Transfer Tank/Auxiliary Fuel Tank/Toolbox Combo – 60 Gallon | U.S.-made option, compact setup | 60 gallons | Aluminum (assumed from product line) |
| 51 Gallon Aluminum Fuel Transfer Tank Toolbox Combo with 12 GPM Pump | Lightweight aluminum, pump included | 51 gallons | Aluminum |
| RDS Fuel Transfer/Auxiliary Tank/Toolbox Combo with 8 Gpm Pump – 60-Gal | Good balance of capacity and features | 60 gallons | Aluminum |
| Dee Zee DZ92647 (92 gallon) Aluminum Combo Transfer Tank & Tool Box | Aluminum, versatile storage | 92 gallons | Aluminum |
Dee Zee DZ92647SB 92 Gallon Steel Combo Tank

The Dee Zee DZ92647SB is a combined transfer tank and toolbox with a 92‑gallon capacity. Built in steel, it emphasizes durability and weather resistance. This option is best for buyers prioritizing heavy‑duty steel construction over weight savings. Its integrated toolbox provides secure storage alongside the fuel reservoir, simplifying on‑site logistics. A potential limitation is the added weight when full, which may affect mounting or fuel economy in smaller pickups. Overall, it’s well suited for fleet operators or rough‑terrain jobs where reliability matters most.
RDS MFG INC – 72548 60 Gallon Combo

The RDS MFG INC 72548 combo emphasizes American origin and a compact footprint with a 60‑gallon capacity. It suits buyers who want a dependable, space‑conscious solution that fits mid‑size trucks or service bodies. The product notes indicate a straightforward setup with auto accessory compatibility, and the kit includes a toolbox alongside the transfer tank. This option is favorable for customers who value an American‑made component package. A caveat is the lack of detailed pump specifications in the listing, so verify pump compatibility before purchase.
51 Gallon Aluminum Fuel Transfer Tank Toolbox Combo

This aluminum 51‑gallon combo includes a 12 GPM 12V DC pump, a lengthy 13‑foot hose, and a black finish for corrosion resistance. It’s best for buyers who want a lighter unit with active pumping capabilities built in. The aluminum construction supports easier handling and mounting, though it provides less metallic rigidity than steel for heavy‑impact environments. Choose this if you need a mid‑size setup with a pump ready to operate right away, but avoid it if you anticipate carrying heavier loads that demand a higher capacity or steel durability.
RDS Fuel Transfer/Toolbox Combo with 8 GPM Pump

The RDS 60‑gallon combo features fully welded seams and heavy‑duty aluminum mounting brackets for secure installation. The included spin collar simplifies pump installation and maintenance. This option is best for buyers who value a robust mounting system and easy pump access. It’s a solid choice for corollary service trucks and work trucks that require reliable fuel transfer without adding excessive weight. A potential limitation is that non‑aluminum support structures may still influence mounting complexity on certain truck beds.
Dee Zee DZ92647 Aluminum Combo Tank

The Dee Zee DZ92647 Aluminum Combo offers a balance of durability and storage with a 92‑gallon aluminum tank and integrated toolbox. Aluminum construction reduces overall weight while maintaining corrosion resistance. This option is ideal for buyers seeking a lighter alternative to steel without sacrificing storage capacity. It’s well suited for mid‑to‑larger trucks where weight considerations matter. A limitation to verify is whether the aluminum finish aligns with your vehicle’s mounting hardware and weather exposure in your environment.
Buying Guide: Key Considerations for Truck Auxiliary Fuel Tank Tool Box Combos
- Capacity versus vehicle payload: Higher gallons mean more fuel but more weight. Ensure your truck can safely carry the load both when full and when stationary.
- Material choice: Aluminum is lighter and corrosion‑resistant; steel is typically tougher and more rugged for harsh job sites. Choose based on environment and handling needs.
- Integrated pump and hose length: Pumps (GPM) and hose reach affect fueling speed and reach to equipment. Confirm compatibility with your usual fuel types and fittings.
- Mounting and brackets: Look for heavy‑duty mounting hardware and fully welded seams for long‑term stability, especially on demanding jobsites.
- Toolbox security and access: Check lockability, lid design, and weather sealing to protect tools and accessories from dust and rain.
- Corrosion resistance: Consider how exposure to salt, fertilizer, or grime may impact the chosen material over time.
- Maintenance and serviceability: Identify how easy it is to replace pumps, hoses, and fittings when needed.
Frequently Asked Questions
- What is an auxiliary fuel tank toolbox combo?
It is a combined fuel storage tank with an integrated toolbox, designed to provide both extra fuel and tool storage on a truck bed or hitch area.
- Who should buy these combos?
Ideal for fleet operators, service technicians, construction workers, and off‑grid contractors who need extended fuel range and organized tools in a single installation.
- What materials are common?
Common options include aluminum for lighter weight and corrosion resistance, and steel for maximum durability in rough environments.
- Do these come with pumps included?
Some models include a pump and hose; others may require separate purchase. Check the product listing for pump specifications and hose length.
- How do you install these on a pickup?
Installation typically requires mounting brackets, seals, and hardware compatible with your truck bed. Follow manufacturer guidelines or hire a professional for secure mounting.
- Can I transfer fuel with these on all trucks?
Most are designed for standard utility trucks and service bodies, but verify compatibility with your specific vehicle model and fuel type.