FJ Cruiser Parts and Accessories

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FJ Cruiser Long Range Aux. Fuel Tank Kit

Starting at: $1,595.00

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The FJ Cruiser auxiliary fuel tank will be a great addition to any FJ seeking longer range between fill ups. With both range and clearance in mind, it is a perfect solution for the FJ's low fuel capacity.

Tank is designed to transfer fuel to main tank as needed. A 95 gallon per hour external electric transfer pump, mounting bracket, wiring, lighted switch, relay, and fuel lines are supplied in the full kit. Kit is supplied with a modified factory fill neck that fills both main and auxillary tanks from the OEM fill location. $125 core charge refunded when your OEM fill neck is received in good condition. We offer an optional fuel level sender/fuel gauge kit with Autometer gauges for those that want to monitor the fuel level in their auxillary tank.

Features include:

  • 19 gallon capacity
  • 100% bolt on, no drilling or welding required. (One hose must be cut)
  • Constructed out of high grade aluminum
  • Built in skid plate for extra protection
  • Will work with most aftermarket rear bumpers
  • Lightweight, high clearance design
  • Factory fill location is retained
  • Re-enforced mounting tabs
  • Baffled
  • Optional sending unit / gauge kit *Choose below

NOTE: These tanks are custom built as orders are received. Vendor does not stock tanks. Therefore there is a 1 to 2 week lead time on this item.

This tank is not street legal, it is designed for off-road use only.

Installation instructions (7.2MB)

Shipping dimensions: 47" x 24" x 21"
Weight: 114 lbs

*Note that the weight in the cart will be more as it is a "dimensional weight" used to calculate shipping

Auxilary Fuel Tank FAQs

Q: Your site says it is not road legal. Does that mean it is not DOT approved or that it will not pass California inspections or that it is not legal to have tanks behind the rear axle? I guess the question is: what causes it to not be road legal?
A: At this time the tank is not DOT approved and unfortunately for all other purposes it is being sold and marketed as an off-road only item.

Q: If you sell the kit, does it come with good instructions and can I install it myself? I am mechanically inclined, but prefer quick non-messy installations since this is my primary vehicle.
A: It does come with fairly detailed instructions but it is still a pretty big job. Installs here at our shop take approx. 7 hours. For a first time install it may take a bit longer.

Q: What kind of modifications do I have to make to the FJ to fit this tank?
A: You have to remove your factory filler neck and install our modified version. The tank is bolt-in but you will need to run several electrical wires throughout the vehicle.

Q: I am currently living outside of the United States and will have to have it shipped. What does the empty tank unit weigh itself, and what do all the parts weigh (pump, skid plate, etc)?
A: The complete tank kit ships at 114 lbs. With the gauge kit it ships freight as one box on a pallet.

Q: How does your dual filler tube work. Is it valved like the Toyota Land Cruiser has for its aux tanks, or is it something you have come up with.
A: It is a modified stock fill neck, we add several fittings to the factory unit. I have attached a diagram that may better explain how it works.

Q: I had read some early things in FJCruiserForums about it causing engine lights to come on. Has this been alleviated with your current system?
A: Currently some of our customers are still having the lights come on. We have made countless changes and modifications to the tank to try and eliminate this. At this time we cannot be certain that you will not have a check engine light come. Most of our customers weigh the value of the extra capacity verses resetting the lights every so often. If this is an important concern I would recommend not purchasing the unit.

Note: Optional gauge kits for this tank, also found on our site, can be sold individually and come in black or silver.
  • Model: LR19FJB
  • Manufactured by: Man-a-fre

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