It happened....I de-winterized the trailer, and the inlet housing is cracked. I guess there was some water there when I capped it.
Now I need a part, and so far no luck without totally changing the way this works.
It is a common part, yours is probably gray poly plastic but it may be metal, can't tell from your photo. It is generally called a washing machine faucet mounting ear elbow. The hose part is also available. Home Depot or Lowe's. They are also available in Sharkbite fittings.
The repair was easy. The damaged part was plastic. The new part is a Sharkbite brass fitting. Inside the trailer a pex compression elbow and pex compression union.
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