part 3820350 Piston guide Annovi Reverberi code 3820350 Details Annovi Reverberi number3820350 DescriptionPiston guide ItalianGuida pistoneQty per pump1 Fits these pumps Annovi Reverberi RPV 1 RPV 2 G 19 D Annovi Reverberi RPW 1 RPW 2 G 19 D