OEM Aprilia Fuel Pump O-Ring 5.25x124.30 - AP8144010
For '98-'02 Mille, Mille-R, '00-'03 Falco.
Also replaces AP8176032 which was used on '03 Mille, Mille-R, '02-'05 Tuono, '06-'10 Tuono, and '04-'09 RSVR RSVR Factory
This is the o-ring that seals the fuel pump assembly to the gas tank.
Loctite 518 is the Aprilia recommended sealant/lubricant for this O-Ring.