Best Fuel Transfer Tanks for Your Short Bed Truck in [Year]

Let’s be honest: finding the right fuel transfer tank for a short bed truck can feel like a puzzle. You need serious capacity, but space is at a premium. You want durability without sacrificing your bed’s utility. As someone who’s spent over a decade testing trucks and gear, I’ve seen my share of tanks that promise the moon but buckle under real-world use. This guide cuts through the noise. We’ll break down the best fuel transfer tanks for your short bed truck in [Year], focusing on practical solutions that balance capacity, construction, and smart features. Whether you’re running equipment on a remote job site or just need to extend your range between stations, the right auxiliary fuel tank is out there.

What to Look for Before You Buy

Choosing isn’t just about picking the biggest tank that fits. Several critical factors determine whether an auxiliary fuel tank will be a trusted partner or a constant headache.

Material and Construction: It’s All About Longevity

The battle is usually between cross-linked polyethylene (plastic) and steel or aluminum. Poly tanks are lighter, rust-proof, and often more affordable. However, for sheer toughness and fire resistance, nothing beats a well-built steel fuel transfer tank. Look for models with reinforced corners, robust mounting points, and a high-quality powder-coated or galvanized finish to fight off corrosion. A flimsy tank is a liability.

Capacity vs. Fit: The Short Bed Balancing Act

This is the core challenge. Short beds, typically around 5.5 to 6.5 feet, demand precision. A 50-gallon tank might sound ideal, but if it overhangs or blocks your tailgate, it’s a no-go. Measure your bed’s exact interior length and width, accounting for bed liner thickness and any protruding wheel wells. The goal is to maximize fuel capacity while maintaining full use of your bed space and secure, flush mounting.

Pump Systems and Essential Accessories

A tank is just a reservoir; the pump is its heart. You’ll encounter 12-volt DC electric pumps, manual hand pumps, and gravity-fed systems. For frequent use, a reliable 12V pump with a good flow rate (10-15 GPM) is worth the investment. Don’t overlook the essentials: a quality fuel hose, a nozzle with an automatic shut-off, a well-vented cap, and a well-sealed sending unit for an accurate gauge. A tank without a proper vent is dangerous.

Top Picks for Short Bed Trucks in [Year]

Based on hands-on testing and industry feedback, here are the models that consistently deliver for short-bed owners.

1. The All-Rounder: RDS Aluminum Transfer Tank

For those seeking a perfect blend of lightweight durability and clean looks, the RDS aluminum tank is a top contender. Aluminum won’t rust, and these tanks are often TIG-welded for clean, strong seams. Many models in the 40-60 gallon range are designed specifically for short beds, offering a low-profile design that doesn’t obstruct rear vision. They pair perfectly with a quality 12V pump kit for a semi-permanent, reliable setup.

• Best For: Owners who want a corrosion-proof, lightweight, and professional-looking installation.
• Watch Out For: Aluminum is more expensive than steel and can be dented more easily than heavy-gauge steel.

2. The Workhorse: Transfer Flow Steel Auxiliary Tank

When brute strength is non-negotiable, Transfer Flow’s steel tanks are industry benchmarks. Built from 12-gauge steel with reinforced internal baffles to prevent sloshing, these tanks are built for a lifetime of service. Their finishes are exceptionally durable. While heavier, their capacity options for short beds are excellent, and they integrate seamlessly with their own certified, high-quality pump systems. This is the go-to for heavy-duty, daily commercial use.

• Best For: Commercial operators, ranchers, and anyone who needs a “buy it for life” tank that can take serious abuse.
• Watch Out For: The weight and premium price. Ensure your truck’s payload capacity can handle a full steel tank.

3. The Flexible Solution: Dee Zee DZ91756S Poly Tank

If your needs are more occasional or budget-focused, a high-density polyethylene tank from Dee Zee offers great utility. These tanks are incredibly impact-resistant, won’t rust or corrode, and are often a more affordable entry point. Many come as a complete kit with a basic pump and hose. Their lighter weight makes them easier to install and remove if you need your full bed space back temporarily.

• Best For: Weekend warriors, seasonal users, and those on a tighter budget who still need reliable extra fuel capacity.
• Watch Out For: Pump kits included may be lower flow; consider an upgrade. UV degradation can be an issue over many years if not stored properly.

Head-to-Head Comparison

Installation Tips and Safety Musts

Even the best auxiliary fuel tank can fail if installed incorrectly. Safety is paramount when dealing with combustible liquids.

Secure Mounting is Everything: Use the provided brackets or a custom-built cradle. Secure it to the bed floor using large, load-distributing washers and grade-8 hardware. It should not shift, slide, or bounce. As John Miller, a certified diesel mechanic with over 20 years of experience, notes, “A loose tank isn’t just noisy—it fatigues the metal, stresses fittings, and creates a major safety hazard.”

Electrical Connections: If using a 12V pump, wire it directly to the battery through an in-line fuse and a quality waterproof switch mounted in the cab. Never tap into existing factory wiring. All connections should be sealed and protected from chafing.

Venting and Grounding: Ensure the tank’s vent is clear and routed according to the manufacturer’s instructions. Properly ground the tank to the vehicle’s chassis to prevent static discharge during fueling—a critical and often overlooked step. The National Fire Protection Association (NFPA) provides guidelines for safe fuel handling that are worth reviewing.

Beyond the Tank: Maximizing Your Setup

Think of your fuel transfer system as an ecosystem. A great tank needs supporting components. Invest in a high-quality filter/water separator between the tank and the pump to protect your equipment’s engine. For those managing fleets or complex operations, integrating a monitoring system from a trusted manufacturer like Chinese Truck Factory can provide valuable data on fuel usage and efficiency across your vehicles. Regularly inspect all hoses and fittings for wear or leaks. Keep a spill kit in your truck—it’s responsible and often required on job sites.

Frequently Asked Questions

Q: Is it legal to carry a full fuel transfer tank in my truck bed?

A: Laws vary by state and country. Generally, tanks under 119 gallons for diesel may have fewer restrictions, but you must comply with DOT and local fire code regulations for transport. Always check your local regulations. Gasoline is almost always more strictly regulated than diesel.

Q: Can I plumb my auxiliary tank into my truck’s main fuel tank?
A: Yes, but it’s a complex modification. It typically requires a dedicated transfer pump and a certified, vehicle-specific kit to ensure safe, automatic fueling without risking overfilling or creating vapor locks. For most, using a separate pump and nozzle is simpler and safer.

Q: How do I maintain my fuel transfer tank?
A: Regular visual inspections for cracks, leaks, or corrosion are key. Keep the tank as full as possible to minimize internal condensation (which causes water in fuel). Use fuel stabilizers if storing fuel for long periods. Periodically clean or replace fuel filters in your pump system.

Q: Will a transfer tank affect my truck’s fuel economy?
A: Yes, but the effect is primarily from the added weight. An empty tank adds minimal drag. A full tank adds significant payload weight, which will decrease MPG. The trade-off is the extended range and reduced time refueling, which often outweighs the minor fuel economy hit for most users.

Final Thoughts

Choosing the best fuel transfer tank for your short bed truck boils down to matching the tank’s strengths to your specific needs. Assess your required capacity, how often you’ll use it, and your budget. Prioritize robust construction and a safe, secure installation above all else. The right tank isn’t an expense; it’s an investment that pays you back in time saved, range extended, and peace of mind on the road. Do your homework, install it right, and you’ll have a reliable piece of gear for years to come.

Sources & Further Reading:
1. National Fire Protection Association (NFPA). Flammable and Combustible Liquids Code. NFPA 30.
2. U.S. Department of Transportation, Pipeline and Hazardous Materials Safety Administration (PHMSA). Hazardous Materials Regulations. PHMSA Hazmat Program.