If you’re searching for a spare gas tank solution for trucks, these five options stand out for reliability, fit, and value. This guide helps buyers choose the right auxiliary or replacement tank based on vehicle type, capacity, and usage. The top picks range from OE-replacement tanks to portable caddies, so you can extend range, protect your fuel supply, or simplify refills on the job site. Below you’ll find quick-fit choices, a summary table, and practical buying tips to compare capacity, material, and installation considerations.
| Product | Capacity | Best For | Material |
|---|---|---|---|
| Dorman 576-343 | Standard OE replacement | Chevrolet/GMC owners needing direct compatibility | Steel |
| Garage-Pro Fuel Tank | 16 gallons | Older CHEVROLET fullsize pickups | Steel |
| Dorman 576-334 | Standard OE replacement | Chevrolet/GMC owners needing direct compatibility | Steel |
| AngyMeck 17 Gallon Aluminum | 17 gallons | Classic Chevy pickups (1947–1953) | Aluminum |
| Vigorighter 51 Gal Aluminum Tank with Toolbox | 51 gallons | Extended-range work trucks with storage needs | Aluminum |
Dorman 576-343 Fuel Tank for Select Chevrolet/GMC Models

This steel replacement tank is designed to directly replace the original fuel tank on specific Chevrolet and GMC models. The tank uses rugged materials to support long service life and is validated for a quality fit. It is best for owners who need a straightforward, factory-like replacement without modifying mounting points or fuel lines. A caution is that compatibility is limited to listed years and models, so verify your truck’s exact specifications before purchasing.
Garage-Pro Fuel Tank for 1982–1987 CHEVROLET Fullsize Pickups

This 16-gallon, direct-fit fuel tank is designed for older CHEVROLET fullsize pickups. It offers a straightforward OE replacement with a robust steel build. The product is suitable for buyers who want a known-fit, field-proven replacement and value the included warranty benefits offered through the seller. A potential limitation is that it targets older truck models, so newer truck configurations may require different tank specifications.
Dorman 576-334 Fuel Tank for Select Chevrolet/GMC Models

Another OE-replacement option from Dorman, this tank is built to replace the original fuel tank on compatible Chevrolet/GMC models. It emphasizes a reliable fit and durable construction, making it a good choice for owners who want a dependable, no-frills tank replacement. The limitation is similar to the 576-343: ensure your exact model-year alignment matches the product listing.
AngyMeck 17 Gallon Aluminum Fuel Tank for Chevrolet Pickup

This aluminum tank is designed for classic Chevrolet pickups (1947–1953). With a 17-gallon capacity and a wide mounting footprint, it suits buyers restoring or maintaining vintage trucks that require a specific fit. It is best for enthusiasts seeking a metal tank with corrosion resistance and a fit tailored to retro models. A limitation is the narrow model range, focusing on older trucks.
Vigorighter 51 Gallon Aluminum Tank with Toolbox

This all-in-one 51-gallon aluminum system combines a fuel tank with a built-in toolbox. The enclosure and rugged, corrosion-resistant aluminum construction are designed for heavy-duty use on job sites or long trips. It includes a 12 GPM pump, 13-foot hose, and auto-nozzle for spill-free refueling. It’s best for trucks needing extended range plus organized storage. A possible drawback is its larger footprint, which occupies more bed space than smaller tanks.
Scepter Duramax Flo ’N Go 14 Gallon Gas Caddy

This portable 14-gallon caddy is equipped with a durable, wheeled design and a 10-foot hose for easy transport and fueling at multiple locations. It is ideal for farmers, landscapers, and marine users who need mobility and quick fueling without accessing a fixed tank. A limitation is its smaller capacity compared with stationary tanks, which may require refilling more often on long drives or heavy-use sites.
PeakPursuit 15 Gal Gas Caddy with Pump

This 15-gallon portable tank features a built-in pump and a 10-foot hose designed to minimize spills and simplify fueling. It is well-suited for users who need a compact, mobile fuel source for lawn care, boats, or on-site work. The design emphasizes spill prevention, but owners should consider whether the capacity meets their longest-running tasks before heavy use.
Royal Vintage Spare A112 Auxiliary Tank for Bikes

Designed for servicing bikes and smaller vehicles, this auxiliary tank offers a compact option with a focus on spare capacity. It is best for buyers who require a simple, low-volume addition to a small machine instead of a full truck setup. A limitation is the potential mismatch with larger truck systems; verify compatibility with your specific machine before purchasing.
Buying Guide: Key Considerations for Spare Gas Tanks
- Capacity and tank type: Choose a capacity that matches your typical range and refueling plan. Stationary tanks (like 51 gallons) suit long hauls; smaller portable tanks suit on-site tasks.
- Material: Steel tanks are sturdy and cost-effective; aluminum tanks offer lighter weight and corrosion resistance, especially in harsh environments.
- Fit and compatibility: OE-replacement tanks require exact model-year alignment. Classic trucks may benefit from vintage-specific tanks. Always confirm year, make, and model before buying.
- Portability vs. stationary use: Portable caddies provide mobility and quick refueling, while stationary tanks require installation but offer more fuel on hand.
- Mounting and space: Large tanks or combo units (tank plus toolbox) require bed or frame space and may affect payload; check dimensions and mounting options.
- Safety and spill prevention: Look for features such as secure fittings, shutoff valves, and spill-proof hoses to minimize leaks during handling.
Frequently Asked Questions
- What should I consider when choosing an auxiliary fuel tank for a truck?
Consider capacity, compatibility with your truck model, material, and whether you need portable or stationary options.
- Are aluminum tanks better than steel for trucks?
Aluminum is lighter and corrosion-resistant, which can be beneficial for heavier use or off-road conditions; steel is typically durable and cost-effective.
- Can I install an OE-replacement tank myself?
Installation difficulty varies by model; some tanks are direct-fit replacements, while others may require professional mounting or additional hardware.
- What is the advantage of a tank-with-toolbox combo?
It saves space by combining fuel storage with tool storage, useful for work trucks that need equipment and fuel on site.
- Do portable gas caddies spill easily?
Modern designs emphasize spill prevention with shutoff valves and controlled flow; always follow manufacturer instructions during use.
- How do I verify compatibility for a classic Chevy pickup tank?
Check the exact model year, body style, and mounting dimensions specified by the seller and compare to your truck’s specifications.