Choosing the right auxiliary fuel tank can extend a truck’s range, reduce refueling stops, and improve on-road efficiency. The items below highlight popular, durable options from trusted brands, with capacities suited to various trucks and beds. This guide compares capacity, construction, and ease of installation to help you select a model that fits your needs and vehicle type.
Summary of Selected Products
| Product | Brand | Capacity | Material | Key Feature |
|---|---|---|---|---|
| Better Built Steel Transfer Fuel Tank | Better Built | 36 Gallon | Steel | Built-in baffles; automatic shutoff to prevent spills |
| RDS MFG INC Fuel Tank | RDS MFG INC | 60 Gallon | Metal | Top-siphonable with electric pump; various dimensions |
| RDS MFG INC Rectangular Auxiliary/Transfer Fuel Tank | RDS MFG INC | 45 Gallon | Metal | Fully welded seams for durability |
| DEE ZEE DZ92556NB Transfer Tank | DEE ZEE | 125 Aluminum | Aluminum | Non-rusting; radius curve reduces weld stress |
| TITAN Fuel Tanks Titan Fuel 5410050 | TITAN Fuel Tanks | 50 Gallon | Poly/Steel composite | Compact package dimensions; auto part classification |
Better Built Steel Transfer Fuel Tank — 36 Gallon
The Better Built 36-gallon steel transfer tank features a compact rectangular design suitable for tight spaces in pickup beds. Its stainless-like finish offers resilience against corrosion typical in field use. The tank includes internal baffles to minimize movement and reduce shifting of fuel contents during transport. An automatic shut-off mechanism on compatible pumps helps prevent spills during refueling or transfer operations. Its robust construction makes it a practical option for trucks needing reliable capacity without excessive bulk.
RDS MFG INC Fuel Tank — 60 Gallon
RDS MFG INC offers a versatile 60-gallon auxiliary tank designed to fit many long- and short-bed configurations. It supports gasoline auxiliary fueling when siphoned from the top via an electric pump, making it convenient for extended missions. Prospective buyers should measure their truck bed to ensure proper fit and clearance. The product line emphasizes compatibility across multiple truck makes and models, providing a practical option for those needing substantial extra capacity without excessive length.
RDS MFG INC 45 Gallon Rectangular Tank
This 45-gallon rectangular auxiliary/transfer tank from RDS MFG INC emphasizes durable construction with fully welded seams for reliability. It is designed to support gasoline auxiliary fueling when siphoned from the top using an electric fuel pump. The 45-gallon capacity provides a middle-ground solution for trucks that require additional range without adding excessive weight or length. It suits mid-sized pickups and some full-size configurations with adequate bed space.
DEE ZEE DZ92556NB Transfer Tank
DEE ZEE’s DZ92556NB is a 125-gallon aluminum transfer tank, designed to resist corrosion and reduce weight compared with steel. A radius curve minimizes stress at welds, improving longevity, and the unit includes three stability baffles to limit fuel movement and a drain plug for easier maintenance. The aluminum construction makes it a compelling option for drivers who prioritize corrosion resistance and lighter weight in heavy-duty configurations.
TITAN Fuel Tanks Titan 5410050 — 50 Gallon
TITAN Fuel Tanks offers a 50-gallon auxiliary tank with practical dimensions suitable for a variety of pickup beds. The product is presented as a reliable, ready-to-install solution with straightforward packaging. The 50-gallon capacity balances extended range with manageable weight, and the unit’s design emphasizes compatibility with standard mounting hardware and pickup configurations. For users needing a dependable mid-range option, Titan’s tank serves as a solid choice.
Buying Guide: Key Purchase Considerations
- Capacity and space: Choose capacity based on typical trip distance and available bed space. Larger tanks increase range but add weight and may require extended fill lines.
- Material and durability: Steel tanks offer ruggedness and lower cost, while aluminum tanks resist corrosion and may be lighter. Consider the climate and fuel type when selecting material.
- Seams and construction: Fully welded seams reduce leaks and increase lifetime. Look for built-in baffles to minimize fuel slosh during driving and braking.
- Installation compatibility: Verify bed length, mounting points, and whether the tank fits with existing toolboxes or bed rails. Some models require additional fittings or installation kits.
- Fuel type and fueling method: Ensure compatibility with gasoline or diesel as needed. Top-siphonable tanks with electric pumps offer convenient fueling options.
- Maintenance and accessibility: Drain plugs and serviceable components simplify periodic maintenance. Aluminum models may require different care than steel.
- Warranty and brand support: Choose brands with solid warranties and readily available replacement parts in the U.S. market.
- Legal and safety considerations: Check local regulations regarding auxiliary fuel storage, venting, and placement to comply with safety standards.
- Cost vs. value: Weigh the long-term durability and potential resale value against upfront cost. Heavier, high-capacity tanks are typically more expensive but can reduce downtime.
Installation And Fitment Tips
Before purchasing, measure the truck bed length, wheel well clearance, and any existing hardware. Review the included mounting hardware and installation kit requirements. If unsure, consult a professional installer to ensure safe and compliant setup. Consider adding a fuel filler transfer line with an electric pump if you plan frequent refueling in remote areas.
Performance Perspectives
From a performance standpoint, the right auxiliary tank can improve range for long-haul trips, reduce downtime, and provide a reliable backup fuel source. However, options vary by bed size, vehicle type, and usage scenario. For frequent highway travel, a mid-range tank with robust seals and effective baffling is typically sufficient. For off-road or long-range work, larger capacities with corrosion-resistant materials may be advantageous. Always balance capacity with weight and space constraints to maintain safe handling and fuel economy.