Product Description
Stock CJ fuel capacity runs out fast on longer trail runs, and this oversized 21-gallon tank exists specifically to extend that range on a 1978-1983 CJ5 or 1978-1986 CJ7. It's a real upgrade, not a drop-in: it needs the OEM-style skid plate (with the included extensions to lower it for the taller tank), end straps, and an in-line fuel filter, and ships with a new longer top strap, sending unit, lock ring, and gasket to complete the swap.
Steel OEM tanks corrode from the inside out as ethanol-blended fuel picks up moisture over the years, and once rust perforates the metal there's no patching it — a full replacement is the only real fix. This tank is molded in high-density cross-linked polyethylene specifically because it doesn't rust, pit, or corrode the way steel does, so once it's installed correctly it's not something you'll be revisiting.
Technical Specifications
- Capacity: 21 Gallons
- Material: High-Density Cross-Linked Polyethylene
- Dimensions: 23" x 16" x 15"
- Installation Type: Lock Ring, requires OEM-style skid plate + end straps
- Includes longer top strap, sending unit, skid plate extensions, lock ring, and gasket
- Replaces OEM part number 8128585
Fitment
- Jeep CJ5 | 1978-1983
- Jeep CJ7 | 1978-1986
