Part Number: F20-05001819EFI (PAF20-05001819EFI)
The part is used for engine models: Parsun F15A/F20A EFI
This O-ring seals the connection between the electric pump outlet and the upper fuel-pump body on the Parsun F20A EFI.
It fits over the pump’s upper outlet spigot, separate from the reservoir-cup seal and drain-screw O-ring.