FL5/DE5 Coolant Expansion Tank

  UPDATE. 11-10-25. Pre order open. Estimated DEC/JAN shipment. I am working hard to keep up with these. Thank you for being patient. If you have a current open order expect shipment details within the week.   Origin Fabrication FL5/DE5 Coolant Expansion Tank. Designed to replace the unreliable factory plastic unit. This is the best representation of an OEM+ part we could think of. Skip the sheet metal imported ones and buy something that is simply better.  100% Made in the USA 5 Axis machined from 6061 aluminum OEM Mounting points machined into tank   Billet filler neck with replaceable overflow port Sight glass for fluid level monitoring TIG welded in house and pressure tested Drop in OEM fitment  Utilizes OEM radiator cap  OEM overflow tube keeper machined into tank Internally baffled  Discrete laser engraved origin logo No compromises B team approved  Also compatible with the FK8