[Roadsters] Fuel leak, 2000 " thing " ID

[Charles Vanderburg]

Can anyone ID?  on 2000, between Solex dampers, rising off rear carb elevated
up between to point separating small fuel lines.  Layers of metal, with
perhaps a seal, under pressure leak persists with engine running, not visable
at exact point of spurt toward engine.  What is name. Need name and number to
order.  Thanks!!

Charlie V. Texarkana, TX