Choosing the right auxiliary tank for a truck can improve fuel logistics, on-site refueling, and emergency readiness. This guide highlights five top options, comparing capacities, pump specs, and build quality to help fleet managers and enthusiasts pick a model that fits their needs.
| Product | Capacity | Key Feature |
|---|---|---|
| RDS MFG INC 71083 Rectangular Auxiliary/Transfer Fuel Tank | 45 Gallon | Fully welded seams and top-siphon fuel access |
| RDS MFG INC Rectangular Auxiliary Fuel Tank | 69 Gallon | Large capacity with top-siphon fueling |
| RDS MFG INC 71789 Rectangular Auxiliary/Transfer Combo Tank | 51 Gallon | Combo tank and tool compatibility |
| BLACKHORSE-RACING 60-Gal Aluminum Transfer Tank Toolbox Combo | 60 Gallon | Drive-side toolbox with 10 GPM pump |
| LAPPPLSP Fuel Transfer/Auxiliary Tank Toolbox Combo | 60 Gallon | 12 GPM pump with toolbox on top |
RDS MFG INC 71083 Rectangular Auxiliary/Transfer Fuel Tank
The 45-gallon rectangular auxiliary tank from RDS MFG INC is designed for rugged use with fully welded seams for durability. It supports gasoline auxiliary fueling when siphoned from the top using an electric fuel pump. This unit emphasizes compatibility with standard tank configurations in a compact footprint, making it suitable for pickups and light-duty service vehicles.
Key features include: a robust welded construction, top-siphon fueling capability, and a broad assortment of tanks in various capacities to fit diverse needs. Build quality is oriented toward long service life in demanding environments, with emphasis on leak prevention and reliable fuel transfer performance.
RDS MFG INC Rectangular Auxiliary Fuel Tank
The 69-gallon rectangular auxiliary fuel tank offers a larger capacity option for extended trips or heavy-duty applications. It follows RDS MFG INC’s approach of supplying functional tanks with top-siphon fueling via an electric pump, enabling efficient on-vehicle refueling. The product dimensions accommodate multiple mounting layouts without compromising underbody clearance.
Highlights include: generous capacity for longer runs, gasoline fueling compatibility, and defined dimensions suitable for fleet trucks and service vehicles. The design is aligned with practical field use and straightforward installation in compatible mounting trays.
RDS MFG INC 71789 Rectangular Auxiliary/Transfer Combo Tank
This 51-gallon combo fuel tank integrates auxiliary fueling with a tool-tank compatibility profile. It supports gasoline fueling via a top-siphon approach and is positioned for reliability in vehicle fleets requiring both fuel storage and additional utility capacity. The product is part of a broader lineup of adaptable tanks designed to meet varied installation constraints.
Notable aspects include: a balance of capacity and footprint, compatibility with electric pumps, and clear product type targeting for motor fuel transfer in trucks and service vehicles. The design aims to deliver dependable performance in daily operational use.
BLACKHORSE-RACING 60-Gal Aluminum Transfer Tank Toolbox Combo
This 60-gallon aluminum transfer tank combines a rugged toolbox with a fuel transfer solution. The drive-side toolbox accommodates tools or small accessories, while a 10 GPM pump provides efficient fuel transfer. The system includes a long hose and tubing for flexible fueling in agricultural, construction, or industrial settings. The all-welded aluminum construction minimizes leakage risk and supports safe transport of gasoline and diesel.
Key considerations: integrated toolbox adds value for mobile crews, high-quality aluminum construction for corrosion resistance, and a powerful pump suitable for quick fueling tasks. This unit is well-suited for fleets needing both fuel storage and on-site tool storage in a compact package.
LAPPPLSP Fuel Transfer/Auxiliary Tank Toolbox Combo
This 60-gallon aluminum transfer tank comes with a toolbox on top and a 12 GPM pump, delivering strong fuel transfer performance. It features a 13-foot hose and a 3/4-inch inlet/outlet, making it versatile for different vehicle configurations and refueling activities. The welded seams and robust construction emphasize durability for field use in diverse industries.
Considerations include: the balance of storage and enterprising pump capability, the convenience of the toolbox for on-the-job storage, and a configuration that suits trucks, trailers, or service vehicles requiring reliable fuel transport and quick refueling capability.
Buying Guide
Key purchase considerations when selecting an auxiliary tank for a truck include capacity needs, mounting compatibility, and fuel transfer performance. Here are several angles to evaluate:
- Capacity and range: Choose a tank size that aligns with typical trip lengths, refueling intervals, and payload constraints. Larger capacities reduce refueling stops but add weight.
- Material and construction: Aluminum tanks provide corrosion resistance and lighter weight compared to steel. Weld quality and seam integrity matter for long-term durability.
- Fuel compatibility: Confirm whether the tank supports gasoline, diesel, or kerosene, and ensure the pump and hoses are rated for the intended fuel.
- Pump specifications: Flow rate (GPM), operating voltage, and suction height affect fueling speed and reliability. Consider 12 V systems for most trucks.
- Integration with tools: Toolbox combos offer organized storage for wrenches, hoses, and nozzle accessories, improving on-site efficiency.
- Installation and mounting: Review dimensions, bolt patterns, and clearance to avoid interference with trailer hitches, exhaust, or suspension components.
- Leak prevention and safety: Look for sealed welds, leak-tested components, and compatible seals to minimize cross-contamination and environmental risk.
- Maintenance and warranty: Assess ease of maintenance, availability of replacement parts, and warranty terms for confidence in ownership costs.
For buyers prioritizing speed and portable operations, a 60-gallon toolbox combo with a 10–12 GPM pump provides a good balance of capacity and refueling velocity. If space is constrained or heavier payloads are common, a 45–69 gallon range with proven welded construction can offer better fit in tighter trucks. Always verify mounting compatibility with your specific vehicle year, make, and model.