Transfer Flow – America’s Premier Fuel Tank Manufacturer
Since 1983, Transfer Flow has set the standard for professional-grade fuel tank systems in the United States. Every tank we design, engineer, and manufacture is American-made, reflecting our unwavering commitment to quality, durability, and precision craftsmanship. Whether you need to extend your truck’s fuel range, add a reliable in-field refueling solution, or upgrade to a high-capacity replacement tank, Transfer Flow delivers safe, legal, and dependable solutions you can trust.
Our in-bed auxiliary fuel tanks provide additional fuel capacity without compromising reliability or bed space. Built from rugged aluminized steel, they are engineered to withstand demanding conditions and years of heavy use. DOT-compliant refueling tanks are available in multiple sizes and include convenient features such as a 12-volt fuel pump and cab-mounted power switch, making refueling fast, safe, and efficient—no matter the job site.
For those looking to maximize range without sacrificing performance, our replacement fuel tanks are engineered to fit precisely in the stock tank location while offering larger capacity. Retrofit filler neck kits are available for a wide variety of vehicles, ensuring smooth installation and factory-quality fit.
At Transfer Flow, customer satisfaction drives everything we do. Our team of experienced engineers—including mechanical, mechatronics, and manufacturing specialists—designs fuel tank systems that meet and exceed industry standards. From individual truck owners to commercial work truck manufacturers, Transfer Flow is trusted to deliver innovative, thoroughly tested, high-performance fuel tanks made in the USA from American-made steel.
Why Choose Transfer Flow?
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Over 40 years of industry-leading experience
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Highly skilled engineering team with expertise in mechanical, mechatronics, and manufacturing design
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100% American craftsmanship using durable, high-quality steel
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Safe, legal, and reliable fuel tank systems for trucks and commercial applications
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DOT-compliant refueling tanks for gasoline, diesel, and kerosene
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CARB-compliant gasoline replacement tanks for 50-state legal operation
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Trusted by leading OEMs including Ram, Ford, GM, MQ Power, Hino, Navistar, Knapheide, Onan, and Driverge
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Commitment to innovation, product variety, and user-friendly design
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Illustrated, step-by-step installation instructions for easy setup
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Highly engineered, rigorously tested, and backed by a 6-year, unlimited-mile warranty
With Transfer Flow, you’re choosing more than just a fuel tank—you’re choosing the professional standard in fuel system design, durability, and performance. You’re also supporting a company that manufactures its products in the USA, creating and sustaining jobs for hardworking Americans who take pride in building every tank to the highest standards.