part 3660220 Piston guide Ø 25 Annovi Reverberi code 3660220 Details Annovi Reverberi number3660220 DescriptionPiston guide Ø 25 ItalianGuida pistone posteriore Ø 25Qty per pump3 Also comes in KIT 42852 Plunger guide kit, Ø25 mm Fits these pumps Annovi Reverberi RTX 2 RTX 50.300RTX 60.300 N