I have a 1989 Proline 21 with a 1989 OMC Sea Drive 2.0 which is equipped with hydraulic steering. The steering cylinder has started to leak. I noticed that most of the steering components are made by Hynautics. However, the steering cylinder has OMC part #983991 stamped on it's body. Anybody know if this cylinder is actually a Hynautics part with a OMC part # and if a replacement seal kit is available? Thanks in advance.
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