Finding the right saddle tanks for trucks depends on your truck size, mounting style, and fuel needs. This guide highlights five well-suited options for common semi-truck and pickup configurations, focusing on durability, compatibility, and safety features. Each choice targets different buyer types—from fleet operators needing high capacity to independent drivers prioritizing compact, quick-install designs. Use the quick reference below to compare at a glance.
| Product | Capacity | Mount Type | Best For |
|---|---|---|---|
| Mytee SMC50A | 50 gallons | Saddle frame with J-brackets | Medium-duty fleets; balanced capacity and fit |
| Weather Guard 90 Gal L-Shape | 90 gallons | L-shaped, saddle box compatibility | Full-size trucks needing high capacity |
| Mytee SMC25AR | 25 gallons | Side saddle with rear ports | Compact spaces; quick install |
| Weather Guard L-Shape 50 Gal | 50 gallons | L-shaped, compact design | Smaller trucks or tight spaces |
| Weather Guard 110 Gallon Fuel Tank | 110 gallons | Saddle-ready with full arc-welded construction | High-capacity needs and secure mounting |
Mytee Products SMC50A 50 Gallon Saddle Tank

Best for mid-range fuel capacity, the Mytee SMC50A uses a saddle frame mount with J-brackets and stainless steel straps for reliable support. It includes three 1-1/4″ NPT ports with built-in diffusers and a 40-micron breather cap. This tank is designed for compatibility with multiple OEM and aftermarket parts, making it a flexible choice for fleets that prioritize standardization.
Who it’s best for: operations needing a robust 50-gallon tank that balances capacity with install ease. It suits semi-truck fleets and long-haul drivers who want dependable fuel storage without excessive weight or complexity.
Why selected: The combination of accessible ports, a reinforced end design, and broad compatibility helps avoid fitment headaches during installation. The internal baffles reduce fluid movement, contributing to safer vehicle handling when stopping and turning.
Caution: Confirm compatibility with your truck’s saddle frame and mounting hardware before purchase to avoid mounting conflicts.
Weather Guard Transfer Tank L-Shape 90Gal Black

Durability and high capacity define this Weather Guard unit. Built from heavy-duty 12-gauge steel, it’s ideal for full-size trucks with Gull Wing or Saddle Boxes that demand significant storage. Its L-shape design makes efficient use of available underbody space while keeping fuel lines accessible. Interior baffles help minimize sloshing, aiding safe vehicle operation during fluid shifts.
Who it’s best for: operators needing large-capacity tanks for long trips or fleets that frequently run near maximum tank volume. It’s also suitable where secure mounting and robust construction are priorities.
Why selected: The steel construction and thoughtful internal baffles address both longevity and safety concerns in demanding road conditions.
Caution: Higher capacity comes with added weight; ensure vehicle payload limits and mounting space are adequate for installation.
Mytee Products SMC25AR 25 Gallon Saddle Mount Tank

The SMC25AR delivers a compact 25-gallon option with a dual rear 2″ NPT port configuration. Its 24″ x 15″ footprint makes it a practical choice for side-mount saddle installations where space is at a premium. The tank is aluminum, which helps manage weight while maintaining durability for narrower trucks or lighter-duty applications.
Who it’s best for: drivers or fleets that operate smaller trucks or need a lightweight solution with straightforward mounting. It’s also a good match for training or maintenance fleets that regularly swap tanks between vehicles.
Why selected: The dual rear ports offer flexible plumbing routes, and its aluminum construction provides a favorable weight-to-capacity ratio for frequent shifting between trucks.
Caution: Check port access clearance on your vehicle to verify that the rear-facing ports won’t be obstructed by other components.
Weather Guard L-Shape 50 Gallon

This 50-gallon Weather Guard tank emphasizes compact design without sacrificing durability. It’s built from heavy steel with a vented filler cap that prevents pressure buildup and includes a lockable feature for security. The L-shape design makes it a practical option for smaller trucks or tight configurations where space is at a premium.
Who it’s best for: operators needing a balance between capacity and available mounting space, especially on lighter-duty trucks or service fleets working in urban environments.
Why selected: The vented cap and security features help address both safety and theft concerns in busy or precarious work sites.
Caution: Verify that the tank’s dimensions align with your saddle box or underbody mount to prevent interference with doors or tool chests.
Weather Guard 110 Gallon Fuel Tank

With a large 110-gallon capacity, this Weather Guard tank is designed for extended ranges and fewer fill-ups. It is compatible with saddle or cross truck tool boxes and features a plate steel flange for secure mounting along with full arc-welded construction for durability. This option is best when maximum range per fill is a priority.
Who it’s best for: fleets or drivers who cover long hauls or operate in regions with limited fuel stops, where refueling opportunities are scarce.
Why selected: The combination of high capacity and robust mounting options makes it a strong candidate for high-demand routes and fleet efficiency.
Caution: The heavier weight when full may impact vehicle handling; ensure axle and suspension capacity can safely support it.
Buying Guide: Saddle Tanks For Trucks — Key Considerations
- Capacity vs. Space: Larger tanks increase range but add weight and may require more mounting clearance. Match capacity to typical routes and fuel stops.
- Mounting Style: Saddle frame, L-shape, or side-mount configurations affect installation, accessibility, and space under the vehicle. Choose based on available saddle boxes and frame design.
- Materials: Aluminum tanks are lighter but may be less durable under certain conditions; steel tanks offer strength but add weight. Consider payload limits and corrosion resistance needs.
- Ports and Fittings: Port size, location, and the presence of diffusers or breathers affect plumbing options and fuel flow. Verify compatibility with your hoses and pumps.
- Safety Features: Internal baffles reduce fuel slosh; vented caps prevent pressure buildup; lockable caps deter tampering. Prioritize features that align with your risk tolerance and work environment.
- Compatibility: Confirm that the tank fits your saddle boxes, frame type, and truck model. Review OEM and aftermarket compatibility notes to avoid fitment issues.
- Maintenance: Look for design elements that simplify cleaning and inspection, such as easy-to-access vents and drain plugs where applicable.
FAQ
- What is the best saddle tank for long-haul trucks? A high-capacity option like the 110-gallon Weather Guard tank offers extended range, but confirm mounting space and payload capacity for your truck.
- Are aluminum tanks lighter than steel? Yes, aluminum tanks typically weigh less, which can improve payload efficiency on lighter-duty applications.
- Do tanks come with mounting hardware? Some include brackets and straps; verify what’s included and what you need to purchase separately.
- How do internal baffles improve safety? Baffles limit fuel movement during braking and cornering, reducing surge and improving vehicle control.
- Can I mix brands for saddle components? Compatibility varies; follow manufacturer guidelines and ensure hardware and fittings match to prevent leaks or mounting failure.
- What should I check before buying a saddle tank? Measure mounting space, confirm port access, verify compatibility with your saddle boxes, and ensure the weight is acceptable for your payload.