For contractors, landscapers, equipment operators, and mobile service professionals, the ability to transport diesel fuel and hydraulic fluid safely and efficiently is often the difference between a productive day and costly downtime. The WEATHER GUARD Model 350-3-02 Steel Transfer Tank delivers professional-grade fuel storage and transport in a cleverly designed L-shaped configuration that integrates seamlessly with compact pickup trucks already outfitted with WEATHER GUARD toolboxes. This 50-gallon capacity automotive accessory is engineered specifically for non-flammable fluids like diesel and hydraulic oil, providing the commercial-duty construction, safety features, and sleek gloss black finish you need to keep equipment fueled and operations running smoothly without constant trips to fuel stations or suppliers.
L-Shape Design: Smart Integration with Your Truck Bed Setup
The L-shaped configuration of this transfer tank represents intelligent engineering that maximizes utility while working harmoniously with your existing truck bed equipment. This unique shape is specifically designed to attach safely to most compact pickup trucks that are already outfitted with WEATHER GUARD Gull Wing Boxes or Saddle Boxes—two of the most popular toolbox configurations for professional truck operators. Rather than forcing you to choose between secure tool storage and fuel transport capability, the L-shape design allows both systems to coexist in your truck bed, creating a comprehensive mobile workstation that carries both the tools and fuel you need to keep operations running efficiently.
The L-shape configuration typically positions the tank along one side and across the front of the truck bed, wrapping around your existing toolbox setup rather than competing with it for space. This thoughtful design means you're not sacrificing valuable truck bed real estate or tool storage capacity to gain fuel transport capability—you're adding functionality to areas that might otherwise go unused or be difficult to utilize effectively. For compact pickup operators where bed space is at a premium, this integration approach delivers maximum functionality from every available cubic inch.
The 50-gallon capacity strikes an excellent balance for compact pickup applications. It's substantial enough to significantly extend your operational range, reducing the frequency of refueling stops and allowing you to take advantage of bulk fuel pricing or convenient fueling locations. Yet it's sized appropriately for compact truck payload capacities and bed dimensions, ensuring you're not overloading your vehicle or creating handling issues. At approximately 32.25" long, 30" wide, and 22" high, the tank fits efficiently in compact truck beds while providing professional-level fluid storage capacity that can fuel multiple pieces of equipment throughout a full workday or even several days of operation.
Commercial-Grade Steel Construction Built to Last
The WEATHER GUARD Transfer Tank is constructed from heavy-duty 12-gauge steel panels—material thickness that delivers optimum strength for commercial product use where the tank will be subjected to constant road vibration, temperature variations, loading and unloading cycles, and the demanding conditions of professional operations. This isn't a lightweight consumer-grade tank; it's engineered for the rigors of daily commercial use where reliability and durability aren't optional—they're essential to your operation and livelihood.
The overlapping edge panel design provides superior corner support, reinforcing the areas most vulnerable to stress and impact. Corners are traditionally weak points in tank construction, but WEATHER GUARD's overlapping design creates robust joints that maintain structural integrity even under the constant flexing and vibration inherent in truck bed installations. This engineering attention to stress points translates directly into extended service life and reliable performance over years of demanding use across thousands of miles and countless job sites.
Interior baffles are strategically positioned throughout the tank to minimize fluid motion during transport. When you're carrying 50 gallons of diesel or hydraulic fluid (which can weigh over 350 pounds), the sloshing effect of that liquid moving around during acceleration, braking, and cornering can create significant forces that stress the tank structure and affect vehicle handling. The baffles break up these large fluid movements, reducing stress on the tank walls, extending tank life by preventing fatigue at weld points and seams, and contributing to more stable, predictable vehicle handling even when the tank is partially full—the condition that typically creates the most problematic fluid dynamics.
Key Features
- 50-Gallon L-Shape Design: Integrates with WEATHER GUARD Gull Wing and Saddle Boxes on compact pickups for combined tool storage and fuel transport capability
- Heavy-Duty 12-Gauge Steel Construction: Commercial-grade steel panels with overlapping edges and interior baffles for maximum durability and extended service life
- Comprehensive Safety Features: Vented lockable filler cap prevents pressure buildup; rubber isolation bushings absorb vibration; 3/8" drain port for maintenance
- Professional Gloss Black Finish: ARMOR TUF powder coat provides corrosion protection and sleek appearance that complements modern truck aesthetics
Safety and Operational Features for Professional Use
Safety is paramount when transporting fuel and hydraulic fluids, and the WEATHER GUARD Transfer Tank incorporates multiple features specifically engineered to ensure safe operation under varying conditions. The vented filler cap is a critical safety component that prevents pressure build-up inside the tank as temperatures fluctuate throughout the day. As diesel or hydraulic fluid heats up and expands in the sun, or as elevation changes during transport over varied terrain, the vented cap allows air to enter or escape as needed, preventing dangerous pressure accumulation or vacuum formation that could damage the tank, cause leaks, or create hazardous conditions. The cap is also lockable, providing security against theft or tampering—important when your truck is parked at job sites, customer locations, overnight at your facility, or anywhere your valuable fuel supply might be vulnerable.
Rubber isolation bushings serve as the interface between the tank and its mounting points, absorbing road vibration and protecting the tank from the constant stress of rough roads, potholes, gravel surfaces, and the vibration inherent in truck operation—particularly relevant for professionals who frequently work on construction sites, rural properties, or other locations with challenging road conditions. These bushings act as shock absorbers, preventing vibration from being transmitted directly to the tank structure where it could eventually cause fatigue, cracks, or leaks at welds or seams. This vibration isolation extends tank life significantly and contributes to the long-term reliability that professional operators demand when equipment failure isn't an option.
The reinforced filler neck is engineered specifically for the stresses of filling and pumping operations. This is the area that sees the most handling and mechanical stress as you insert fuel nozzles, pump nozzles, or transfer equipment multiple times daily, and the reinforcement ensures this high-use area maintains its integrity and seal over thousands of filling cycles throughout years of service. The 2" standard NPT (National Pipe Thread) connection accommodates most commercial pumps and transfer equipment, ensuring compatibility with the pumping systems you're likely already using or can readily source from suppliers, eliminating concerns about proprietary connections or hard-to-find adapters.
The 3/8" drain port is strategically positioned for routine maintenance and complete tank drainage when needed. Regular maintenance includes periodic draining to remove any water condensation (which naturally occurs with temperature cycling) or sediment that might accumulate over time, and this accessible drain port makes that maintenance straightforward without requiring special tools or complicated procedures. Complete drainage capability is also important if you need to clean the tank, perform repairs or inspections, or transition the tank to different service after extended use in one application.
Professional Gloss Black Finish
The Gloss Black ARMOR TUF powder coat finish delivers both superior protection and contemporary aesthetics that complement modern truck styling. This commercial-grade protective coating is engineered to withstand the harsh conditions that transfer tanks face—moisture, road salt, chemicals, UV exposure, and the inevitable scrapes and impacts that occur in professional truck bed environments. Powder coating creates a tough, chip-resistant, corrosion-proof barrier that protects the steel substrate from rust and deterioration, ensuring long-term structural integrity and appearance retention.
The sleek gloss black color offers several advantages beyond aesthetics. It provides a professional, finished appearance that looks purposeful and integrated rather than like aftermarket equipment simply bolted on. The black finish coordinates beautifully with black or dark-colored trucks for a cohesive look, matches other black truck accessories and toolboxes for a unified appearance, and maintains its professional look even when showing minor wear or surface scratches that would be more visible on lighter colors. For operators who take pride in their equipment and understand that professional appearance impacts customer perception and business credibility, the gloss black finish delivers both protection and presentation.
Warranty Protection and Quality Assurance
The Limited Lifetime Warranty demonstrates WEATHER GUARD's confidence in the construction quality and durability of this transfer tank. This warranty coverage provides peace of mind that your investment is protected and that the tank will continue performing reliably throughout years of professional use, through all seasons, across thousands of miles, and under the demanding conditions that characterize commercial operations. USA manufacturing ensures quality control standards, material specifications, welding procedures, and construction methods that meet WEATHER GUARD's exacting requirements and the demanding needs of commercial operators who depend on their equipment daily and can't afford failures that cause downtime, lost revenue, or safety concerns.
Important Usage Guidelines
It's critical to understand that WEATHER GUARD Transfer Tanks are designed specifically for non-flammable fluids such as diesel fuel and hydraulic oil. These tanks are NOT approved for gasoline or other flammable fluids, and using them for such purposes would be dangerous, illegal in most jurisdictions, void all warranties, and create serious safety hazards. Diesel and hydraulic fluids have significantly higher flash points than gasoline (typically above 125°F for diesel compared to -45°F for gasoline), making them much safer for transport in auxiliary tank applications and allowing for the tank designs and venting systems used in these products.
Additionally, these transfer tanks are designed as standalone fluid transport and storage solutions—they are NOT designed to be connected to your vehicle's primary fuel system as an auxiliary tank. The tank is intended for transporting fuel to equipment, generators, machinery, or tools at job sites, or for storing hydraulic fluid for equipment maintenance and repairs. This distinction is important for both safety and regulatory compliance, as auxiliary fuel systems connected to vehicle engines are subject to different regulations and safety standards than transfer tanks used for transporting fuel to be dispensed into other equipment.
Product Specifications
- Style: L-Shape Transfer Tank
- Tank Capacity: 50 gallons
- Material: 12-Gauge Steel
- Color: Gloss Black
- Finish: ARMOR TUF Powder Coat
- Compatible Fluids: Diesel Fuel, Hydraulic Fluid (Non-Flammable Only)
- Mounting Method: Steel Bed Plate
- Filler Opening: 2" Standard NPT
- Drain Port: 3/8"
- Warranty: Limited Lifetime
- Country of Origin: USA
Dimensions:
- Length: 32.25"
- Width: 30"
- Height: 22"
- Weight: 126 lbs (empty)
Key Safety Features:
- Vented lockable filler cap
- Interior baffles for fluid motion control
- Rubber isolation bushings
- Reinforced filler neck
- 3/8" drain port for maintenance
- Heavy-duty 12-gauge steel construction
- Overlapping edge panel design
Compatibility:
- Designed for compact pickup trucks
- Integrates with WEATHER GUARD Gull Wing Boxes
- Integrates with WEATHER GUARD Saddle Boxes
- 2" NPT accommodates most commercial pumps
The Professional Choice for Mobile Fuel Transport
Whether you're a landscaping contractor fueling mowers and equipment at multiple job sites throughout the day, a construction professional running generators and hydraulic equipment on remote locations, an agricultural operator servicing tractors and implements in the field far from fuel sources, an equipment rental business providing fueled machinery to customers and needing to refuel returned equipment, a mobile mechanic carrying hydraulic fluid for repairs and service calls, or any professional who needs reliable diesel or hydraulic fluid transport capability without sacrificing tool storage or truck bed functionality, the WEATHER GUARD L-Shape Transfer Tank in Gloss Black delivers the commercial-grade construction, intelligent design integration, comprehensive safety features, professional appearance, and long-term durability that serious operators demand. The combination of 50-gallon capacity, L-shape design that works harmoniously with existing toolbox configurations, heavy-duty 12-gauge steel construction, professional safety features, sleek gloss black finish that complements modern truck aesthetics, and USA manufacturing quality backed by a Limited Lifetime Warranty makes this transfer tank the intelligent choice for professionals who understand that reliable fuel transport capability directly impacts operational efficiency, reduces costly downtime, improves job site productivity by eliminating fuel runs during work hours, and contributes to profitability in competitive markets where the right equipment provides measurable advantages that separate successful operations from struggling ones.
Terms to Know
- Transfer Tank: An auxiliary fuel storage tank mounted in a truck bed or vehicle cargo area for transporting and dispensing fuel or other fluids to equipment, machinery, or generators rather than serving as additional fuel capacity for the vehicle itself.
- L-Shape Configuration: A tank design with an angular profile that wraps around existing equipment (like toolboxes) to maximize space utilization in truck beds with multiple types of equipment installed.
- 12-Gauge Steel: Steel with a thickness of approximately 0.105" (2.66mm)—heavy-duty material providing excellent strength and durability for commercial applications subject to constant stress and vibration.
- Interior Baffles: Internal dividers or partitions within a tank that break up fluid movement, reducing sloshing effects during transport and minimizing stress on tank walls and welds.
- NPT (National Pipe Thread): A U.S. standard for tapered threads used on pipes and fittings, ensuring compatibility across different manufacturers' pumps and transfer equipment.
- Vented Filler Cap: A cap with controlled venting that allows air to enter or escape the tank as needed to prevent pressure buildup or vacuum formation while preventing fuel spillage.
- Powder Coat Finish: A durable coating process where dry powder is electrostatically applied and heat-cured to create a tough, chip-resistant, corrosion-proof protective layer superior to liquid paint.
- Non-Flammable Fluids: Liquids with high flash points (the temperature at which they can ignite), such as diesel fuel and hydraulic oil, which are significantly safer to transport than gasoline or other highly flammable liquids.
- Gull Wing Box/Saddle Box: Specific styles of truck toolboxes; Gull Wing boxes have doors that open upward from the center like wings, while Saddle Boxes sit over the wheel wells, leaving the center bed area accessible.
