The Ford Barn

47Merc · 07-15-2021, 09:19 PM

I am looking to fit a mechanical temperature gauge in a 1939 Tudor with a 59A motor.
Can any one tell me what size / thread the bush is that the sender unit screws into and what size the thread into the head is. Also where I could possibly buy one. Thanks.

deuce lover · 07-16-2021, 11:18 AM

John Wolf & Co in OH and ThirdGen Auto in TN has those. Southside Obsolete in MN might also. Head thread is 1/4 NPT, gauge nut for the bulb is 5/8 X 18.Here is a link to one that sold recently.
https://www.ebay.com/itm/15450662593...MAAOSwbytgp~tP

marko39 · 07-17-2021, 07:14 AM

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aftermarket temp gauges usually come with more than one fitting. thats where i got mine for my 39.

07-15-2021, 09:19 PM	#1
47Merc Senior Member Join Date: May 2010 Location: Australia Posts: 362	1939 Temp gauge fitting I am looking to fit a mechanical temperature gauge in a 1939 Tudor with a 59A motor. Can any one tell me what size / thread the bush is that the sender unit screws into and what size the thread into the head is. Also where I could possibly buy one. Thanks.

07-16-2021, 11:18 AM	#2
deuce lover Senior Member Join Date: May 2010 Location: Southern France Posts: 5,301	Re: 1939 Temp gauge fitting John Wolf & Co in OH and ThirdGen Auto in TN has those. Southside Obsolete in MN might also. Head thread is 1/4 NPT, gauge nut for the bulb is 5/8 X 18.Here is a link to one that sold recently. https://www.ebay.com/itm/15450662593...MAAOSwbytgp~tP

07-17-2021, 07:14 AM	#3
marko39 Senior Member Join Date: Oct 2016 Location: harpursville ny Posts: 1,040	Re: 1939 Temp gauge fitting Sponsored Links (Register now to hide all advertisements) aftermarket temp gauges usually come with more than one fitting. thats where i got mine for my 39.