ATI 51 Gallon Auxiliary Diesel Fuel Tank

DOT Compliant: Meets and exceeds Title 49 CFR 393.65 standards for auxiliary diesel fuel tanks.

Extended Capacity: 51-gallon auxiliary tank significantly increases driving range for long hauls and work applications.

Durable Construction: Built from 0.125 in. thick bright aluminum treadplate with fully welded seams and internal baffles to reduce fuel slosh.

Gravity Feed Design: Transfers fuel using gravity—no pump or electrical system required.

Proper Venting: Vented fitting supports consistent and unrestricted gravity flow.

Drain / Feed Port: 3/8 in. NPT drain fitting functions as the gravity feed outlet.

Secure Filler Cap: Automotive-style diesel filler cap provides reliable access.

Quality Tested: Each tank is visually inspected and pressure tested to ensure leak-free operation.

Clean and Ready: Cleaned inside and out prior to shipping.

Stable Mounting: Integrated mounting tabs allow secure truck bed installation.

American Made: Manufactured in the USA using high-quality materials and fittings.

Warranty Backed: Covered by ATI’s 1-year manufacturer’s warranty.

Diesel Specific: Designed exclusively for auxiliary diesel fuel use.

Item Number: AUX51R

Brand: ATI

Manufacturer’s Warranty: 1 Year

Capacity: 51 Gallons

Shape: Rectangular

Material: Aluminum

Finish: Bright Aluminum (Black Powder Coat Optional)

Internal Baffles: Yes

Drain / Feed Fitting: 3/8 in. NPT

Vent: Gravity vented

Mounting Tabs: Integrated

Mounting Hardware Included: No

DOT Approved: Yes

Compatible With: Diesel Fuel Only

Country of Origin: USA