Fresh Water Tank Cap Wanted

[Triple J]

We have 27 ft Sailfish. Recently we lost the original fresh water tank cap. I’m wondering where to buy the replacement? Is it standard water tank cap? Size? Appreciate if someone provides some information. Thanks

 

[Fixit]

my 2004 270 islander has perko 540 caps

PERKO Inc. - Catalog - Spare Parts - Replacement Cap - 0540 Style [0540]

PERKO Figure No. 0540 Replacement Cap - 0540 Style [0540DPG99A, 0540DPD99A, 0540DPW99A, 0556DP099A, replacement, cap, gas, diesel, water, waste, fuel cap, replacement caps, fuel caps]

www.perko.com