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70531 Fuel Fill Opposite Of The Other L Tanks
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RDS L-Shaped Aluminum Transfer Fuel Tank 48, 52, 60, and 95 Gallons

DOT Approved - Works With 5th Wheel And Gooseneck Hitches

70531 Fuel Fill Opposite Of The Other L Tanks
$1,002.99 - $1,309.95
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  • 100% pressure tested
  • 3/16" heavy duty aluminum mounting brackets
  • Built-in baffles reduce sloshing
  • Diesel install kits are available for diesel gravity feed (sold separately)

RDS L-Shaped Transfer Tanks Feature:

  • A DOT-approved tank can be used to transport diesel, gasoline, or aviation fuel.
  • No-Rust 0.125" thick heavy-duty aluminum construction.
  • Available tread plate of mill finish
  • Fully welded seams and 100% pressure tested for leaks.
  • Internal built-in baffles reduce sloshing and weight transfer.
  • DOT Approved rollover safety valve (vent).
  • Includes 3/8" FTP drain plug
  • A tank that can be used as a diesel aux tank with extra cost gravity feed installation kit.

Tank Measurements In Inches

Part Number

Gallons A B C D E Finish
70531 48 26 24 32 9 11* Brite
70307 52 17.5 55 18.5 8 9 Brite
72770 60 16.5 48 28 8 9.5 Brite
70388 95 26 48  32 9 11  Brite
70388PC 95 26 48 32 9 11 Black

Versatility by Design - The classic "L" shaped fuel tank works with crossover toolboxes or leaves room for your 5th wheel or gooseneck trailer.

Big Brother is Watching - The DOT has some specific rules about carrying diesel fuel or gasoline. RDS Transfer Tanks are DOT certified for transferring diesel, gasoline, or aviation fuel. However, laws will vary from State to State - so we STRONGLY suggest that local and state-level ordinances be reviewed before the purchase of a transfer or auxiliary tank.

It Pays To Buy The Best - On some things, quality and experience should be your first consideration. RDS has been building aluminum transfer and auxiliary tanks for over 45 years. RDS products' build quality meets DOT's stringent standards and DOT certification is not a one-time thing. Facilities and construction techniques are constantly monitored and must be maintained to keep the certification. Thick 1/8" aluminum, continuously welded seams, and pressure testing for leaks are all part of the RDS manufacturing process.

A Tank is Not Just a Tank - In the fuel tank world, a "Transfer Tank" is one that's used with a pump attached to fuel equipment or vehicles other than the vehicle carrying the tank. However, there's no rule against refueling the truck carrying the tank. The main thing is that the tank is not part of the truck's own fuel system. Tanks that are integrated into the truck's factory fuel system are called generally referred to as "Auxiliary Tanks". RDS transfer tanks are legal for diesel, gasoline, and aviation fuel. However, they cannot be used as auxiliary tanks for flammable liquids like gasoline. Flammable liquids cannot legally or safely be gravity fed into the truck's existing fuel system.

RDS Gives You Options - RDS Transfer Tanks Can Be Auxiliary Tanks but their Auxiliary tanks are not designed to be Transfer Tanks. RDS transfer tanks can be adapted easily to be diesel auxiliary tanks by replacing the 3/8 NPT drain plug with a barbed hose fitting. RDS makes a complete kit for integrating your transfer tank into your diesel trucks fuel system. The RDS gravity feed kits can be purchased here. The kit contains everything you need to make the connection from the auxiliary tank with a 3/8" NPT bottom fitting to the factory fill tube. The diesel auxiliary tank keeps the factory tank full. When the auxiliary tank is empty your factory fuel gauge will move off the full mark. These kits are supplied with detailed instructions and take less than an hour to install. There are no wires or switches to install, engineered for rollover protection, and only requires attaching the kit supplied 3/8" npt pipe fitting on the bottom of the tank in place of the drain fitting and splicing into the factory filler tube.

You Do Have Some Work To Do - RDS offers many different configurations, capacities, and shapes but measuring the area you intend to mount your tank is the only way to correctly choose the right tank for your truck. Use our guide "How to Measure Your Truck Bed for a Transfer or Auxiliary Tank"

What You Need To Know:

  • RDS tanks CANNOT be used as AUXILIARY Tanks for Gasoline*
  • On Tank 70531 fuel fill is on the opposite side from the other 'L' Tanks
  • Tread Plate is like "Diamond Plate" Only 1 tank is Available in Black 70388PC
  • Add approximately 2.5" to the height dimensions for cap and filler neck
  • Always measure your truck's bed for clearance at corners, wheel wells, etc.
  • Shop For Hand Pumps, Meters and Filters Here.
  • Pumps and Hoses are not included
  • Mounting tabs extend approximately 1" from the base
  • Mounting hardware is included
  • Pumps add 8-10" to the height dimension
  • Leonard Truck Accessories is a Direct Distributor For RDS Products

    *70531 fuel fill is located on the opposite side from other 'L' shaped.

    Real truck lovers, off-roaders or fans of anything auto, be a truck hero and buy the best quality, best-reviewed, best priced RDS Aluminum Tanks and Toolbox products through Leonard Truck Accessories .

    Since opening in 1963 Leonard Buildings and Truck Accessories' goal has always been to provide quality truck accessories at the lowest prices. Ford, Chevy, GMC, Dodge, Ram, Nissan, Honda, Jeep, and Toyota Truck owners may disagree on which vehicle brand is better but they can all agree that Leonard Truck Accessories is the perfect place to buy your "L" Shaped Fuel Transfer Tank by RDS.

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