Dee Zee

Long Rectangle Auxiliary Tank


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On The Road, Time is Money.

Regular stops to refuel can take their tole on your workday or extend your drive time on road trips with your 5th wheel trailer.  Dee Zee Auxiliary Transfer Tanks are tested and certified to hold diesel fuel for refueling equipment at the job site or for transferring directly to your truck’s fuel tank during longer commutes.

Our tanks are constructed out of Non-Rusting .125 Brite-Tread Aluminum with radius curve design to eliminate key weld pressure points and are hydrostatically pressure tested up to 29psi to ensure they meet the highest level of quality.

Extra Fuel When You Need it, Siphoned Directly to Your Gas Tank.

Go ahead, skip that next exit with confidence. Our sophisticated connector kit (sold separately) allows you to move fuel directly from your transfer tank to your fuel tank. Auxiliary Tanks meet Federal DOT and Federal Motor Carrier Safety Administration requirements for tanks to perform as an Auxiliary Fuel system.

Connector kits to feed diesel directly into your OEM fuel line sold separately.

Dee Zee Auxiliary Fuel Transfer Tank Features:

  •     Non-Rusting .125 Brite-Tread Aluminum
  •     Meets Federal Motor Carrier Safety Administration Requirements For Diesel Auxiliary Tanks
  •     Radius Curve Eliminates Weld Pressure Points
  •     Includes Coupler for Venting (1) and Dual Threaded Bungs
  •     Compatible with Center Mounted Transfer Pumps (larger pumps require bracing)
  •     Full Sized and Fully Welded Baffles Add Extra Strength
  •     Hydrostatically Pressure Tested to 29 psi
  •     Meets Federal DOT Requirements for UN31A and UN31B Tanks
  •     Standard .375" Drain Plug
  •     Mounting Tabs To Secure To The Truck Bed
  •     Skinny Rectangle - L: 59.5" x W: 9" x H: 19"
  •     Volume: 39 Gallon Capacity
  •     Made In USA
  •     Limited-Lifetime Warranty

*Always Check Local Regulations and Vehicle Warranty Before Altering Your OEM Fuel System

**Diesel Fuel Line Connection Kits Sold Separately

NOTICE: Some products in this store can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Please check the product label for warning information. For more information go to We cannot ship any products into California that are affected by Proposition 65.

SHIPPING CHANGES: Due to new sales tax rules in the state of Colorado, effective June 1, 2019, purchases made online through JAX Mercantile for customers in the state of Colorado will only be able to be shipped to addresses within JAX current tax jurisdictions in Fort Collins, Loveland, Lafayette, and Broomfield. Customers in the state of Colorado who do not have shipping addresses within these zip codes may still opt for in-store pickup at any JAX store location when making a purchase on the JAX website. Learn more on our shipping and returns page.

Customer Service: 1-800-336-8314 Monday - Friday 9am to 5pm MTN