Finding the right gas tank for a truck bed can improve fueling convenience, payload options, and on-the-road reliability. This guide highlights five well-matched options designed to fit common American pickups, from classic Chevys to modern F-Series. Each pick aims to deliver direct-fit installation, durable construction, and practical features for truck owners who need extra capacity or a safer underbody setup. Read on for concise product insights and a buyer’s guide to help you choose the right tank for your truck.
| Product | Brand | Capacity | Fitment Notes | Key Benefit |
|---|---|---|---|---|
| TRQ Gas Fuel Tank 16 gal | TRQ | 16 gal | Chevrolet/GMC trucks (1982+ era) | Direct-fit, OE-style replacement |
| Brothers Trucks C2022-67 Gas Tank Relocation Kit-Underbed -20-Gallon | Brothers | 20 gal | Underbed relocation; side-fill | Moves tank out of cab for space and safety |
| TRQ Gas Fuel Tank 2014-2016 Ford F-250/F-350 | TRQ | Replacements vary by model | Ford Super Duty trucks | Direct-fit, pre-assembled for easy install |
| Fuel Gas Tank 20 Gallon for Chevy/GMC C/K | AM Autoparts | 20 gal | Chevy/GMC C/K R Series | Direct-fit replacement with compatibility checks |
| 17 Gallon Street Rod Aluminum Fuel Cell Tank | DADIANPU | 17 gal | Street/Off-road vehicles | Aluminum construction, high-performance fittings |
TRQ Gas Fuel Tank 16 Gallon for GM Trucks

The TRQ 16-gallon fuel tank is designed as a direct-fit OE replacement for GM trucks, with vehicle-specific fitment guidance in the listing. It emphasizes straightforward installation and compatibility, reducing the need for modifications. The tank is intended to align with GM11B and TAN00256 references, supporting a functional upgrade without custom fabrication for many Chevrolet and GMC pickups from applicable years.
Brothers Underbed Gas Tank Relocation Kit

This kit relocates the fuel tank under the bed and uses a side-fill design to streamline refueling and maintenance. It helps free up cab space and can improve weight distribution for some truck configurations. The kit targets trucks with underbed mounting options and is marketed as a complete solution for upgrading or relocating the tank assembly.
TRQ 2014-2016 Ford F-250/F-350 Fuel Tank

Designed as a direct-fit replacement for Ford Super Duty trucks, this TRQ tank emphasizes easy installation with pre-assembled components. It comes with compatible reference numbers and notes on fitment, helping buyers confirm that the tank aligns with their specific F-Series configuration before purchase.
AM Autoparts 20 Gallon Gas Tank for Chevy/GMC

AM Autoparts delivers a 20-gallon gas tank intended for Chevy/GMC C/K series models with both OE and aftermarket reference numbers. The listing stresses compatibility checks via the Amazon Garage feature and emphasizes precise fitment as a direct replacement—minimizing the need for modifications during installation.
17 Gallon Street Rod Aluminum Fuel Cell Tank

Crafted from 5051 aluminum, this 17-gallon fuel cell is designed for street trucks, drift builds, and marine-adjacent applications. It features an 8 AN fuel pickup, 8 AN rollover vent, and a 12-bolt fill neck with a cap, offering flexible fueling configurations for performance-focused users who may require remote filling or specific hose routing options.
TOPWAY 16 Gallon Portable Fuel Tank Caddy

TOPWAY offers a portable 16-gallon fuel caddy with a 12V pump, durable HDPE construction, and wheels for mobility. It is designed to optimize refueling for outdoor work, lawn care, or field service scenarios, featuring a compact footprint and a self-priming transfer pump to simplify on-site fueling tasks without permanent mounting.
AM-TANK Portable Gas Fuel Tank

AM-TANK provides a 116-gallon portable gasoline can with an integrated pump, plug, and cover lid. Built from roto-molded polyethylene, it emphasizes weather resistance, forklift-friendly handling, and secure transport features, making it suitable for remote fueling operations or larger on-site deployments where a fixed tank is impractical.
Buying Guide: Key Considerations For Your Truck Bed Fuel Tank
- Tank capacity and vehicle fit: Choose a tank that matches your trucking needs and fits the specific make/model range. Confirm fitment details in the product listing and use dealer or OEM references when available.
- Mounting and location: Decide between underbed relocation kits, cab-referenced OE replacements, or portable tanks. Underbed or cab-mounted tanks can improve weight distribution and safety, while portable tanks offer versatility for trailers, boats, or off-road rigs.
- Material and durability: Aluminum tanks offer lighter weight and corrosion resistance for performance builds, while steel or high-density polyethylene tanks balance durability and cost. Consider UV stability and environmental exposure if the tank will face prolonged outdoor use.
- Fill and pump options: Many kits include a filling neck, sending unit, or external transfer pump. Portable units often include built-in pumps; fixed tanks may require separate pumps or manifolds. Check hose sizes and nozzle compatibility.
- Compatibility and references: Look for compatibility guidance such as OE references or confirmed-fit notes. Some listings include fit charts, warranty notes, and installation tips that reduce uncertainty during purchase.
- Installation practicality: Pre-assembled components and direct-fit designs minimize the need for custom fabrication. Consider whether you need professional installation or a DIY-friendly option.
- Safety and regulations: Ensure that tanks meet relevant safety and compliance standards for fuel storage and transport, especially for portable or outdoor use. Leak prevention and venting features are important for long-term reliability.