SeaStar HS5157 Seal Kit for Front-Mount & Pivot Cylinders — Includes Two Seal Glands, Pin Wrench

The SeaStar HS5157 Seal Kit is a complete front-seal replacement pack for SeaStar pivot and front-mount cylinders, supplied with two seal glands, a pin wrench, and a guide tool to simplify installation.

If you maintain hydraulic steering or actuator cylinders on boats powered by Honda, OMC, SeaRay or other compatible systems, the HS5157 kit supplies the components you need to restore a leak-free front gland. The kit is tailored for several SeaStar front-mount/ pivot cylinders and compact cylinders where threaded end glands or pivot cylinder front seals require replacement. It arrives with both the parts and the simple tools to make the swap faster and more reliable than hunting individual seals.

Which cylinders does this kit fit?

The HS5157 is engineered to fit a broad range of SeaStar front-mount and pivot cylinders, including Honda- and OMC-specific pivot models and many compact cylinder designs. Compatibility covers legacy and current part numbers so you can replace worn front seals without switching cylinder models.

• Compatible front-mount/pivot cylinder parts: HC5340, HC5341, HC5342, HC5343, HC5344, HC5345, HC5346, HC5347, HC5348
• Also fits compact and additional SeaStar cylinders: HC5358, HC5365, HC5375, HC5394, HC5445
• Extended fit for HC6750–HC6755 series and other threaded gland front designs

How does the kit simplify installation?

Instead of sourcing multiple small parts, the HS5157 provides the exact replacement seal glands plus two installation tools that reduce the risk of damaging seals. The included pin wrench and seal gland assembly guide keep alignment correct and make removal and seating faster, especially in cramped engine bays.

• Pin wrench designed to engage gland fasteners safely
• Guide tool centers the gland for straight, even seating
• Two seal glands included for a complete front-end rebuild

What maintenance benefits will I see after replacing these seals?

Replacing damaged or worn front seals restores proper hydraulic containment and reduces leakage that leads to steering fade, contamination, or premature component wear. Fresh seals help maintain system pressure and reduce fluid loss, extending the useful life of the cylinder and associated steering gear.

• Stops front-gland leaks that cause hydraulic fluid loss
• Improves cylinder pressure retention and steering responsiveness
• Prevents contaminants from entering the hydraulic chamber

Are the parts OEM quality and what comes in the box?

The HS5157 seal kit is supplied by SeaStar and matches the specifications needed for reliable front-gland performance in compatible cylinders. The boxed contents make it easy to perform a front-seal service without additional shopping for specialty tools or matching parts.

• Two replacement front seal glands engineered for SeaStar cylinders
• Pin wrench to remove and tighten gland retaining hardware
• Seal gland assembly guide tool for aligned installation

Who is this for: Owners, riggers, and marine technicians who perform routine hydraulic steering service on SeaStar-equipped boats will benefit most from the HS5157. It's ideal for anyone maintaining Honda 115–130-specific pivot cylinders, OMC 77–90 pivot cylinders, SeaRay compact cylinders (including some legacy models), or other SeaStar front-mount cylinders that use threaded end glands. Keep this kit aboard or in your workshop to quickly repair front-gland leaks and restore reliable steering performance without waiting for multiple parts to arrive.