Chop Shop 4x4 Off-Road Professional Technicians & Subject Matter Experts

JK Extended Range Gas Tank





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Product Description:


  • JK Extended Range additional tank!
  • 600 mile range!
  • 20 gallon extra tank increases your total capacity in a 4 door JK to 45 gallons!
  • Mounted under the body in the very rear of the vehicle and fills through the stock gas cap. 
  • Specifically designed to be mounted under the rear cargo area of a Jeep JK to keep the center of gravity low!
  • The tank is not a "transfer tank" it is a completely redundant tank with it's own fuel pump that is switched by you from the dash.
  • Both tanks tie back into the factory fuel and emissions equipment so you won't get any check engine light or have computer issues.
  • Hangs no lower than the factory muffler did (does not hurt departure angle).
  • Additional 20 gallon fuel capacity.
  • Mounting location keeps center of gravity low.
  • Accepts the stock Jeep fuel pump module.
  • 1/8" thick Aluminum alloy tank is TIG welded.
  • Foam liner between tank & skid plate.
  • Includes a 3/16" thick heavy duty steel skid plate.
  • Stainless steel hold down strap.
  • Drain plug.
  • Fits in both the 2 and 4 door JK models (2007 to Current). 
  • All tanks are 100% pressure tested.
  • Fully assembled fuel tank in a Heavy Duty skid plate.
  • New factory Mopar roll over / vent valves.
  • New tubing to adapt tank to new mounting location.
  • New cargo area floor cover (BKT-8100).
  • Dual tank wiring harness (GST-8100).
  • Requires the purchase of another factory Jeep fuel pump module (from Jeep dealer).
  • Because of the mounting location, installation of this product requires changes to the exhaust.
  • Requires removal of the rear floor tool storage area (behind rear seat).
  • Does NOT require a body lift.
  • Requires removal of the stock sway bar, but will work with Currie "AntiRock" rear sway bars. Sold Separately.
  • Aftermarket Lifts, that use a different trac bar may be an issue, as the tank was designed to fit with the stock rear trac bar.
  • Can be used with factory tow hitch. 
  • Driving range quoted above is calculated on 40 gallons at 15 miles/gallon.

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