1904 Thomas Service kit for pump# T-617HDN

Service kit for pump# T-617HDN. O-Ring Silicone, head gasket, 624396 piston cup, Bag of parts containing 4x head screws, 2x retainer screws, 2x sst flapper screws, 1x screw and washer; Envelope of parts containing 2x valve keepers, 2x valves, 1x exhaust backer, and 1x 670031 cylinder