part 2820720 Piston guide Ø 40 Annovi Reverberi code 2820720 Details Annovi Reverberi number2820720 DescriptionPiston guide Ø 40 ItalianGuida pistone posteriore Ø 40Qty per pump3 Also comes in KIT 42311 Plunger guide kit, Ø40 mm Fits these pumps Annovi Reverberi RTF 2 RTF 135.100 N APRTF 150.100 N AP