Genuine Aprilia petcock gasket for '95-'04 RS 250, and '97-'00 Pegaso.
Genuine Aprilia petcock gasket for '95-'04 RS 250, and '97-'00 Pegaso.
If your petcock has worn out and started leaking, this part will need to be replaced also.
Aprilia part no. 8120869
Part no. 12 in the diagram