I noticed a cap missing on the line in the picture. Does anyone know what it’s called so I know what to buy? Also, is it ok to run the car without this cap? Thanks

 

80866-SL0-003 is the P/N for that cap

 

Buy a replacement cap when you can. Its not good to have that valve exposed, as debris or moisture can get in there and cause corrosion or introduce contamination into your AC system if someone were to service it.

Its a cap for the low side AC port.

Mine was missing too. I bought one for an Acura TSX...mainly because my Acura TSX also needed one, but also bc the TSX part was $2 or something.

 

Thank you!!!!

 

I would want to know why the cap is gone.

 

not sure, it was gone when I bought it. Ordered a replacement though.

 

That cap has a rubber o ring it helps seal in case the Schrader valve is leaking.