part 3660240 Piston guide Ø 20 Annovi Reverberi code 3660240 Details Annovi Reverberi number3660240 DescriptionPiston guide Ø 20 ItalianGuida pistone posteriore Ø 20Qty per pump3 Also comes in KIT 42851 Plunger guide kit, Ø20 mmKIT 43764 Plunger guide kit, Ø20 mm Fits these pumps Annovi Reverberi RTX 2 RTX 30.300 NRTX 30.500 N