I ask dealer for coolant cap part number, they say it's called a bleeder valve?

[Mauiguy]

I've driven myself nuts so I'm here for help.
My '99 base has a little bit of fluid by the coolant tank cap and the level was a little low so I said fine, gonna get some coolant and a new cap. I get the coolant and the dealer says cap is not in stock. I say ok could I have the part number. This was after telling him what i saw. He prints out a sheet and hands it to me, saying that they call it a bleeder valve. I say ok and take the paper without looking at it. I'm home now and the paper says bleeder valve, $125 and part number 996-106-347-02. I thought ok they screwed up so I will find one on the internet. There's a million of them out there and all sorts of prices and I don't want to get the wrong one, could a couple of you suggest a reputable vendor and part number? The kind that doesn't cost $125 oh my god! Thank you!