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Need fitting for AC pump

At launch several weeks ago it was discovered my AC hose coming out of AC pump had not been hooked up from winterization. After some scrambling (as seacock was open) service manager/mechanic/marina owner hooked hose up but then discovered the fitting was cracked, thus leaking. He shut off sea **** and as it was late, said go ahead and launch. Fitting was a 5 minute fix. He would get part, come to my marina and install it in a few days. That was several weeks ago and nothing. I’ve called him, talked to 2 of his office people who promised me they would talk to him and find out status and get back to me. Nothing.
So now with 80-90 temps, I’ve given up and will try and fix it myself. Not sure what to order not knowing threads or size. Below is pics of pump and fitting (gray in center of photo). Can anyone help with where and what to order?
Thanks.


Thanks.


Comments
You might have to do 1/2" NPT male and then a 1/2" brass coupler.
You can get them on Amazon for under $10.
https://www.amazon.com/dp/B0DZP9BWBW/ref=sspa_dk_hqp_detail_aax_0?sp_csd=d2lkZ2V0TmFtZT1zcF9ocXBfc2hhcmVk&th=1
https://plumbingsell.com/products/3-4x1-2-swivel-adapter-1?currency=USD&variant=41917857890440&utm_source=google&utm_medium=cpc&utm_campaign=Google%20Shopping&stkn=e17178eee84d&utm_source=google&utm_medium=cpc&utm_campaign=22276532594&utm_content=&utm_term=&gad_source=4&gad_campaignid=22270013472&gbraid=0AAAAAqyBUZUPdZb1mojqAE8H5zwKCIN3f
If you have a local true-value or older ace hardware they usually have a larger selection of brass barb fittings.