Headlight gasket for the Aprilia brand headlight used on many American market Italian motorycycles of the 1970s, 1980s, and a few in the early 1990s. These include Moto Guzzi 850T, 850 LeMans, 850T3, V1000 I Convert, V1000G5, and some 1991 - 1993 California III and 1000S.
This headlight was also used on some Benellis, Laverda SF, MV 750S and Ducati 750GT in the US market. Used with Aprilia headlight ring 408221. Ducati number 079538277