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SALE up to 20% OFF plus FREE shipping! Sale Ends Sunday 1/23 @ Midnight
Up to 20% OFF plus FREE shipping until 1/23

RDS 33 Gallon Aluminum Auxiliary Fuel Tank 50X25X9 Model # 71804

by RDS
We currently have 4 in stock.
Save 13% Save 13%
Original price $906.99
Original price $906.99 - Original price $906.99
Original price $906.99
Current price $788.99
$788.99 - $788.99
Current price $788.99


The RDS auxiliary fuel tank is designed to feed the main fuel tank of your truck to increase driving range. Long distance drivers all over the world love the RDS auxiliary tank because it allows you to travel further with less stops, save money by purchasing fuel where it is cheaper, and avoid having to navigate a large load into a tight gas station.

The RDS auxiliary fuel tank will mount securely in the back of your truck and then can be connected to your factory fuel system using the RDS gravity feed diesel kit (Not Included). 

This auxiliary fuel tank comes with a lockable fuel cap, drain fitting, withdraw and return fittings, safety vent, sight gauge, and internal baffles to reduce sloshing. All RDS tanks meet DOT standards and are proudly made in the USA.

Elite Truck Boxes is well known for being one of the best places to purchase an auxiliary fuel tank simply because we offer the best prices and we can get the tank shipped to you without it being damaged.  

It is the user’s responsibility to comply with local, state and federal requirements pertaining to safe transportation, loading and discharging of tank contents.


  • Heavy duty mounting tabs allows the tank to be securely mounted to your truck
  • 100% pressure tested by the manufacturer for safety
  • Fully welded seams make for a very strong design and eliminate the chance of a leak
  • Rust-resistant aluminum construction will not rust or corrode 


Material: Aluminum
Finish: Bright Aluminum
Gallons: 33
Length: 50" 
Width: 20" 
Height: 9" 

Customer Reviews

Based on 1 review
Jimmy Rodgers
RDS Tank

Great price. Super quick shipping. Great order support!