ATI 51-Gallon Aluminum Auxiliary Diesel Fuel Tank - Black|AUX51R-B

By Aluminum Tank Industries, Inc.
Model #AUX51R-B

Ideal for pickup trucks, fleet vehicles, generators, and equipment fuel supply
Factory-integrated fuel transfer connects to the factory filler neck using ATI Fuel Shotz™ diesel install kits, keeping the OEM tank full until the auxiliary tank is empty
51-gallon auxiliary diesel fuel capacity extends driving range and reduces fuel stops on long trips or demanding job sites

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The ATI 51-Gallon Aluminum Auxiliary Diesel Fuel Tank is a top-selling rectangular auxiliary tank designed to increase fuel capacity and extend driving range without sacrificing valuable truck bed space. Built from heavy-duty diamond plate aluminum, this lightweight yet durable tank resists corrosion and harsh working conditions. Measuring 60.5” x 9” x 24”, it’s an ideal solution for pickup trucks, fleets, and work vehicles needing reliable auxiliary diesel fuel storage.

This auxiliary diesel fuel tank connects directly to your factory fuel system through the filler neck using ATI Fuel Shotz diesel install kits, keeping your factory tank full until the auxiliary tank is empty. It can also be used to supply fuel to equipment such as generators, making it versatile for job sites and off-road applications. All ATI auxiliary fuel tanks are DOT compliant and designed for safe, efficient fuel transfer.

Manufactured with American-made components, ATI tanks include a 3/8” NPT outlet, vent with rollover protection, automotive-style fuel cap, and fully welded internal baffles to reduce slosh and improve strength. For drivers seeking a high-quality aluminum auxiliary diesel fuel tank with proven performance and durability, ATI delivers an industry-trusted solution.

Ideal for pickup trucks, fleet vehicles, generators, and equipment fuel supply
Factory-integrated fuel transfer connects to the factory filler neck using ATI Fuel Shotz™ diesel install kits, keeping the OEM tank full until the auxiliary tank is empty
Mounting tabs extend out 1-1/2"
Add 2-1/2" for fuel cap height
Includes vent with rollover protection, automotive-style fuel cap, and fully welded internal baffles to reduce slosh
Made in the USA
Can also power generators and equipment
Heavy-duty diamond plate aluminum construction
51-gallon auxiliary diesel fuel capacity extends driving range and reduces fuel stops on long trips or demanding job sites