HC4645H 150HP Hydraulic Outboard Steering Cylinder Kit for Seastar forYamaha


Fitment

This hydraulic steering kit is equipped with an HC4645H front mount cylinder and is compatible with single outboard motors up to 150 horsepower. Ideal for center console, bass boats, offshore fishing vessels, and more—especially for Yamaha applications requiring under-arm installation.


Durable Marine-Grade Steel

Crafted from high-strength steel alloy with an anti-corrosion coating, the steering cylinder is designed to withstand harsh marine environments and resist seawater erosion. Provides reliable, long-lasting performance season after season.


Built-In Two-Way Lock Valve

Features an internal two-way locking valve that prevents rudder rebound torque, ensuring stable and responsive steering control even during sudden turns or rough water conditions.


Advanced Sealing System & Pressure Resistance

Built to handle up to 10.3MPa (1500psi), the sealing system resists repeated compression and leakage under pressure. Delivers superior performance for safe and smooth boat operation.


Complete Kit with Positionable ORB Fittings

Includes positionable stainless steel ORB (O-Ring Boss) fittings for flexible hose routing. Comes with two extra replacement tubes and all necessary accessories for quick, hassle-free installation.


 

 

 

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Delivery Details

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2.Your item will be carefully packed and shipped within 1 business day after payment received.(Orders are not processed on weekend & holidays.)

Return & Refund

1. Please read the item description and check the pictures carefully before bidding. Return or refund is available only if item DOA or there's error in item description causing the item not fitting your need. In such cases, seller pays for all related shipping cost if any.

2.Returns are also acceptable if buyer purchased this by mistake and item still in good condition for reselling. Buyer is responsible for all related shipping cost.

Warranty

We offer 1Year warranty for our products. In the event the item should fail due to manufacturing defects during intended use, we will replace the part by free of charge. Any modifications of the item will void all warranty coverage.

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Fitment

This hydraulic steering kit is equipped with an HC4645H front mount cylinder and is compatible with single outboard motors up to 150 horsepower. Ideal for center console, bass boats, offshore fishing vessels, and more—especially for Yamaha applications requiring under-arm installation.


Durable Marine-Grade Steel

Crafted from high-strength steel alloy with an anti-corrosion coating, the steering cylinder is designed to withstand harsh marine environments and resist seawater erosion. Provides reliable, long-lasting performance season after season.


Built-In Two-Way Lock Valve

Features an internal two-way locking valve that prevents rudder rebound torque, ensuring stable and responsive steering control even during sudden turns or rough water conditions.


Advanced Sealing System & Pressure Resistance

Built to handle up to 10.3MPa (1500psi), the sealing system resists repeated compression and leakage under pressure. Delivers superior performance for safe and smooth boat operation.


Complete Kit with Positionable ORB Fittings

Includes positionable stainless steel ORB (O-Ring Boss) fittings for flexible hose routing. Comes with two extra replacement tubes and all necessary accessories for quick, hassle-free installation.