Found my receipt, it's from 2001 and the guy on the phone sounded like an old timer then so I hope they are still in bussiness. It's North Jersey Marine, 215 trimble ave, Clifton New Jerset. #973-546-6377.
Good luck, they sent me two dual station temp senders for 33.00 back then. It will help to give them as mush information as possible of your existing sender and instrument.