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Express UFS Fuel Tanks

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step 1 Cab Sizes
Regular Cab - also called standard or single cabs. 2 doors only, no extra cab seating.
Extended Cab - 2 doors with 2 small rear doors, also called a Club, Quad, Super, King or Access Cab
Crew Cab - 4 Full Doors - also knwon a CrewMax, Mega, SuperCrew or Double Cab

Bed Sizes & Styles
Extra Short Bed - typically 5.5 ft beds (full size trucks) -  5 ft beds (down size)
Short Bed - typically 6.5 ft beds (full size trucks) - 6 ft beds (down size trucks)
Long Bed - typically 8 ft beds (full size trucks) - 7 ft beds (down size trucks)
Flareside/Stepside - Wheel wells are on outside of bed and flare out (narrow bed)
Dually - some trucks come with a rear dual wheel base (usually one ton trucks)

40 Gallon Express UFS Tanks by Transfer Flow Inc.

40 Gallon Express UFS Tank Installed

Express UFS Tanks by Transfer Flow Inc.


Transfer Flow Express UFS Fuel Tanks

Introducing the 40 gallon toolbox and auxiliary fuel tank combo! With over 5 1/2 ft storage space, it's the all-in-one toolbox for short bed and long bed Ford, Chevy & Dodge Pickups. And because the fuel fill neck is located inside the locked storage compartment, your fuel is kept safe and secure!

The toolbox tank is made from 14 gauge aluminized steel for superior strength and rust resistance, and is baffled in two places on all four sides. It is powder coated b black for a durable finish the tank is about flush with most bed rails

The 40 gallon auxiliary tank operates with Transfer Flow's Express UFS operating system and comes pre-assembled with fuel lines, wire harness, mounting hardware, fuel pump and computer module. The computer module will turn on the auxiliary pump when the fuel level of the OEM tank drops to approximately 1/2 full. The auxiliary tank will then transfer fuel into the main tank until the stock fuel gauge rises to about 3/4 full. The transferring of fuel at set intervals will occur until the auxiliary tank is empty. When the fuel level of the OEM gauge drops below 3/8 of a tank, the auxiliary tank is out of fuel and the OEM tank has 3/8 of a tank remaining. Because the transferring of fuel is automatic, there is no need for a toggle switch to flip back and forth between the two tanks.


  • Fuel fill neck is located inside locking storage compartment
  • Made from 14-gauge aluminized steel for superior strength and rust resistance
  • 40-Gallon auxiliary fuel tank
  • Storage space is 55" long, 17 1/2" wide, 9 3/4" deep
  • Operates with Transfer Flow’s Express-UFSâ„¢ operating system
  • Fuel pump automatically transfers fuel from toolbox tank to main tank at set intervals
  • Powder coated black for a durable finish
  • Fuel tank is baffled on all four sides in two places
  • Comes with a 3 year/36,000 mile limited warranty
  • Fits 1992-08 Ford HD, 2001-08 GM & 1999-08 Dodge short and long bed diesel pickups