part 1943180 Piston guide Ø 28 Annovi Reverberi code 1943180 Details Annovi Reverberi number1943180 DescriptionPiston guide Ø 28 ItalianGuida pistone posteriore Ø 28Qty per pump3 Also comes in KIT 42562 Water seal kit, Ø28 mm Fits these pumps Annovi Reverberi WHWL 3 WHWL 38.15 NWHWL 42.15 NWHWL 50.15 N