ATI 80-Gallon L-Shaped Aluminum Auxiliary Diesel Fuel Tank|AUX80L

The ATI 80-Gallon Aluminum Auxiliary Diesel Fuel Tank is a top-selling L-shaped auxiliary tank designed to work with a crossover style toolbox or chest box. Built from heavy-duty diamond plate aluminum, this lightweight yet durable tank resists corrosion and harsh working conditions. It's L shape allows for clearance in most 5th wheel applications. Measuring 48.5” x 28” x 26”, 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.