part 2281750 Piston guide Ø 18 Annovi Reverberi code 2281750 Details Annovi Reverberi number2281750 DescriptionPiston guide Ø 18 ItalianGuida pistone anteriore Ø 18Qty per pump3 Fits these pumps Annovi Reverberi RHW 4 RHW 10.15 NRHW 13.12 NRHW 13.17 NRHW 15.15 N