I found this one in a box that my painter returned to me. He removed it before paint - so I must have left it in there when it went to paint shop.

I think it is for the 2 rubber hoses for the windshield washer - at the firewall. The car is an early '72 and uses the spare tire pressure for the washer.

Does it matter which way it goes in? Thanks in advance.

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Two holes make me suspect it's for the washer hoses through the ... back of the dash (firewall?)/behind the dash. I would install it with the "large" side facing where the water & dirt would enter so I think that's from the trunk (front one... ) or from where access is best.

Thanks Jim,

Car is still stripped - just mounted wiper motor yesterday as the first piece installed on the car so access is easy - cheers!