Water temp adaptor for sender

[Rick]

City

Miami

State

FL

Looking for an adaptor that will fit into the heads of a 49 to 53 that allows a modern mechanical sender to fit. The thread size and diameter are almost the same size on the heads and the sender. The adaptor that the sender fits into and comes with the senders are bigger in diameter then the size of the head. Any help
Thanks, Rick

 

[bills1020]

We get those at a local business that makes hydraulic hoses. Just bought a couple last week.