Fuel rail seal missing

I lost the sealing grommet or whatever it was that goes between the fuel line and the inlet port of the fuel rail. It flew out and went down into the motor...gone forever.. Napa guy gave me o-rings but that's not what I need. Chilton's manual shows different fuel rail then what is actually on my car. I have a 1995 Grand Prix SE vin M with the 3.1 motor. I can't seem to find this part anywhere..Dealership perhaps?

i would ask the dealer- get the part number- and then go to gmpartsdirect.com for the best price.