# FK Industries FK LC250 12-gallon auxiliary tank · SLEE package

Canonical page: https://configmyrig.com/products/fk-lc250-12-gallon-auxiliary-tank-slee-package

LC250-specific auxiliary tank with replacement exhaust and automatic siphon transfer; distinct from FK's no-exhaust45L design.

## Selected configuration

- Part/component: FK-LC250-AUX12-TANK
- Configuration: 12US gal / exhaust-replacement siphon package
- Listed parts: $1,674.00 USD / selected configuration
- Source checked: October 30, 2026 (America/New_York)
- Fitment: SLEE lists Land Cruiser2502024–2027; verify US hybrid year/grade/VIN. Supplier explicitly says compatible with OEM main tank or FK29gal main upgrade. Confirm all other underbody accessories.
- Product mass: 30 lb product mass
- Net vehicle addition: Net addition unverified
- Weight basis: SLEE explicitly distinguishes ITEM WEIGHT30lb from packed shipping WEIGHT35lb.30lb is item/product mass, not verified installed net addition; included replacement exhaust/hardware and original parts removed need full accounting.
- Professional install: 10–12 hr; published
- Basis: SLEE-published10–12hr installation scope includes main-tank removal for siphon-pump installation; confirm the current shop quote and vehicle scope.
- Contents: Tank, mounting brackets, replacement exhaust, siphon hardware, plumbing and fittings. Main tank retained; fuel separate.
- Critical specifications: 12US gal additional; powder-coated aluminum-magnesium alloy; integrated3/16in(5mm)skid and baffling; OEM-style siphon jet transfer, no added electrical pump/switch/wiring.
- Supporting work: Main tank removal and minor original fuel-pump assembly modification required. Included replacement exhaust must be fitted/approved as one system. Do not combine with another auxiliary tank. Exact emissions/road-use eligibility remains unverified; obtain documented supplier approval for your vehicle.

## Prerequisites

- Selected product / listed contents (included): Tank, mounting brackets, replacement exhaust, siphon hardware, plumbing and fittings. Main tank retained; fuel separate.
- Loaded fuel and spring planning (check): 12 US gal adds approximately 72 lb of gasoline at full capacity, before dry tank/container and mounting weight. Review full and empty load cases; do not choose constant-load springs solely for occasionally carried fuel.
- Complete fuel/exhaust installation (quote): Quote main-tank removal, siphon installation/fuel-pump modification, included exhaust, leak/function checks and current vehicle approval.
- Main-tank pairing (check): Supplier explicitly permits OEM or FK29gal main tank; confirm exact current part versions and EVAP/filler/skid integration.
- One auxiliary system (check): This replaces alternatives in the auxiliary-tank slot. Do not combine with LRA24gal or another auxiliary system.
- Installation / compatibility notes (check): Main tank removal and minor original fuel-pump assembly modification required. Included replacement exhaust must be fitted/approved as one system. Do not combine with another auxiliary tank. Exact emissions/road-use eligibility remains unverified; obtain documented supplier approval for your vehicle.
- Installed net weight (check): Product weight or factory equipment removed is not fully verified. Do not use shipping weight or assume zero additional load.

## Seller offers (selected configuration, low to high)

- [SLEE · listed out of stock](https://sleeoffroad.com/products/fk-lc250-aux12-tank/): $1,674.00 USD

Prices are dated snapshots; tax, shipping, installation and unlisted supporting equipment are extra. Availability is not inferred.

## Installation resources

- [FK auxiliary tank supplier installation scope](https://sleeoffroad.com/products/fk-lc250-aux12-tank/): reference; Exact SLEE FK-LC250-AUX12-TANK package scope. Supplier scope/published10–12hr, not full manufacturer fitting manual. Obtain the exact current exhaust-replacement package instructions; no45L no-exhaust video substituted.

## All documented options

- [12US gal / exhaust-replacement siphon package](https://configmyrig.com/products/fk-lc250-12-gallon-auxiliary-tank-slee-package): FK-LC250-AUX12-TANK; $1,674.00 USD / selected configuration; 30 lb product mass

## Owner evidence

No sufficiently matched report added. No review rating is inferred.

## Related guidance

- [Planning guide](https://configmyrig.com/guides/suspension-and-constant-load)
- [FK Industries](https://configmyrig.com/brands/fk-industries)
- [Fuel & range](https://configmyrig.com/categories/fuel-and-range)

AI-assisted planning; exact vehicle/application and current supplier documentation require confirmation.