This listing is for one replacement Servis Rhino / Alamo gearbox output cap code 00758663. This output cap holds the output seal (not Included) and puts preload on the lower bearing of the gearbox. Used on several of the Servis Rhino mowers, this OEM cap mounts via 4 mounting bolts. Output shims, code 00758676, 00758677 and 00758678 and the output seal code 00758674 can be found in our online store and are not included.