Has this engine ever been out of the car? Just to the rear of the sway bar, you will see 3 lines, two of them go into metal fittings which connect to the fuel rail above the engine. The other one is a vacuum line from the tank to the charcoal filter area.
I suspect that a mechanic cut that line and then just happened to find a 'correct' size connector to continue the vacuum line. There is no 'replacement' part. If you remove it, be prepared to have a suitably sized piece of hose to connect the vacuum lines.
BTW, the 1993 850 had a connector in that position, later models have a single line from the rear of the car to the right front. My 1996 850 had the clutch replaced and the booger cut the line and left me with an EVAP error message. The 1993 at the P&P was a perfect fit!!
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Keeping it running is better than buying new
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