part 1781520 Piston guide Ø 15 Annovi Reverberi code 1781520 Details Annovi Reverberi number1781520 DescriptionPiston guide Ø 15 ItalianGuida pistone anteriore Ø 15Qty per pump3 Fits these pumps Annovi Reverberi XHW 2 XHW 08.15 NXHW 11.17 N