Jeep TJ/LJ Crawler™ EXT Gas Tank & Skid Plate (19.5 Gal)

Was: $1,700.00
Now: $1,499.99
5 reviews Write a Review

GenRight's 20 gallon TJ EXT tank for up to 5" of stretch

Jeep TJ/LJ

This is the GenRight Crawler™ EXT (Extreme) Gas Tank to fit a Jeep Wrangler TJ / LJ (1997-2006).

It is specifically designed as a heavy duty replacement for the factory Jeep fuel tank.

Hand fabricated to allow for more clearance between the rear axle and the gas tank so you can lengthen your Jeeps wheelbase AND keep the same capacity as stock.

Wanna go to 40's? Then you are going to need bigger axles. This heavy duty tank is trail proven and made to accommodate such upgrades. Additionally this production built gas tank is re-shaped to make more room under the Jeep for a stretch AND accommodate a bigger rear axle!

That way you can keep your back seat to bring the family on your 4 wheeling adventures.

This new tank & skid mounts in the factory location and is it designed to work with all your factory emissions equipment so you won't get any check engine lights or have computer issues.

Aluminum tanks are more environmentally friendly than the plastic tank was! The aluminum tank is less porous and seals better (no leaching of fumes into the environment) than the stock plastic fuel tanks.


  • Replaces factory tank, same as stock fuel capacity (19.5gal).
  • Reuses all the factory EVAP connections.
  • Reuses the factory fuel pump module.
  • Mounts in stock tank location (under the Jeep).
  • Stock mounting location under rear of Jeep, keeps center of gravity low.
  • 1" more ground clearance than stock.
  • Improved departure angle.
  • Creates more room for BIG aftermarket rear axle housings.
  • Shape allows for 5" of rear wheelbase stretch (with Dana 44)
  • 1/8" thick Aluminum alloy tank is hand TIG welded.
  • Foam liner between tank & skid plate.
  • Includes a 3/16" thick heavy duty steel skid plate (powder coated black).
  • Assembled with stainless steel straps.
  • Includes new factory Mopar roll over / vent valves.
  • Internal baffles reduce fuel movement and keep fuel near the pick up.
  • All tanks are 100% pressure tested.
  • Made in U.S.A.!

Additional NOTES:

  • Because of shape and location changes, installation of this product MAY require changes to the last 14" of the exhaust tail pipe.
  • To install this tank in a 2003 or newer Jeep, it might require a small (1") body lift.
  • Fits well with Currie brand Anti-Rock type rear sway bars. Due to the fact that this tank is pushed back 5", the installer will need to carefully pull the fuel line and electrical a little rearward to reconnect them to the fuel pump (not a problem there is plenty of length in the line to reach).
  • We offer two other models with more stretch; the COMP model for up to 7" of stretch and the ALIEN for up to 9" of stretch.
  • We also offer a tank that increases fuel capacity (to 25 gallons) and offers Extended Range (sorry no stretch) model GST-2003.
  • These fuel tanks are considered CARB compliant, because they reuse all the factory equipment (only changing the tank and skid plate).

Click on PICTURES to see more detailed photos.

5 Reviews

  • 5
    A work of Art

    Posted by theorangejeep on Apr 9th 2020

    The fit and finish on this tank is amazing. It's too bad most of the tank is unseen under the jeep. I was a simple swap and install, only took basic hand tools I have in my garage. A must have for the rear axle clearance on my Currie 60 rear axle.

  • 5
    Can't say enough about this product!

    Posted by Chuck on Feb 5th 2020

    This gas tank has to be one of the best built drool over pieces of art I've ever installed onto a vehicle. Welds are top notch, construction spot on, and instructions....actually is in color with steps! Gas tank fit extremely well, install wasn't terrible, and it works as advertised. After install the skid plate got its first work out after a shotty mechanic installed an axle shaft under warranty and I lost my wheel and had to curb the jeep. Ran the skid plate 30ft down a concrete curb and barely a scratch. Can't say enough great things about this company will be ordering more products soon.

  • 5
    Top of the line

    Posted by Joey Keith on Feb 17th 2019

    I am running this tank on my 02 TJ with a Rock Krawler 5" stretch. I have a beefy aftermarket diff cover and this tank gives plenty of clearance even with the extended wheelbase. The welds are beautiful and the attention to detail is top notch. Very impressed with the quality of the tank and the skid plate.

  • 5
    Simply the best

    Posted by Mike Wailes on May 16th 2016

    I run these tanks on both of my stretched TJ's. Let me put it this way: There is no other product on the market that allows you to stretch your wheelbase, keep your tank down where it belongs AND has no tradeoff in fuel capacity. If you're stretching your TJ's wheelbase, this tank is the centerpiece of your build. I can also vouch for it's construction... I'm not sure how many hits they have taken on the trail, but I can tell you when I come down hard on my tank, I don't worry.

  • 5
    Crawler gas tank

    Posted by ROKRIDE on May 15th 2016

    I added the tank to my 97 TJ to stretch the wheel base to 100". One of the best mods to my jeep.

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