Billet Twin Fuel Surge Tank 3LNZKW Australia Billet Twin Fuel Surge Tank 3L Included: Twin fuel pump cradle (39mm pump OD) can be used as twin or single pump Billet 6061 Aluminium Body Removeable O Ring Sealed Billet 6061 Aluminium Caps Anodized black. 8AN Male Fittings. Output ports, overflow, supply and return are M18x1. 5 thread come with preinstalled 8AN male fitting Positive negative terminal are stainless high current electrical studs with nylon protection. Necessary ring