service kit: other kits KIT 42311 Plunger guide kit, Ø40 mm Annovi Reverberi code 42311 In the kit Part numberDescriptionPosition 2820700Piston guide21 2820720Piston guide25 Fits these pumps Annovi Reverberi RTF 2 RTF 135.100 N APRTF 150.100 N AP