Got a fab tank with a crappy plastic lid? Don't want to replace the whole tank? No problem I got you. Check out my billet lids! Full replacements for the plastic marine caps most poeple sell with their tanks (but not a JC tank, mine come with this lid). Comes with o-rings and stainless steel hardware. Available in black or machine finish.
Note: please keep threads lubricated with anti seize to keep from getting stuck together with the coolant minerals.