VEVOR Outboard Hydraulic Steering Pump Helm 300 HP Hydraulic Pump HH5271-3 for Cruisers Runabouts Boats

We do not sell parts separately. All our products have a 12 month warranty and if there is a problem with your purchase during the warranty period, we can send you a replacement part free of charge(In the case of parts that are not consumable). Please click the following link to contact us:https://www.vevor.com/pages/contact-us

Yes, according to the product description, the shaft seal is replaceable. The Happybuy helm features a replaceable shaft seal for easy maintenance.

I did not find any information about whether installation instructions are included.

Based on the product information, the Happybuy Outboard Hydraulic Steering Pump Helm is suitable for mounting on different boat types. The product description states that it is ideal for cruisers, runabouts, center console boats, and offshore fishing boats.

Product information indicates compatibility with other hydraulic steering systems, but does not specify which ones. For detailed compatibility information, it's best to consult an expert in marine steering systems.