part 1942330 Pistone Ø 20 Piston Annovi Reverberi code 1942330 Details Annovi Reverberi number1942330 DescriptionPistone Ø 20 Piston ItalianPistone Ø 20 PistonQty per pump3 Also comes in KIT 43619 Plunger kit Fits these pumps Annovi Reverberi RG 1 RG 24.20 N