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SeaStar HH6345-4 Sport Plus Tilt 2.0 Spline Marine Hydraulic Helm Pump

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MSRP: $1,052.97
— You save $178.00
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SeaStar HH6345-4 Sport Plus Tilt 2.0 Spline Marine Hydraulic Helm Pump

The Dometic Seastar HH63454 hydraulic helm pump is an essential component for marine vessels. Its installation flexibility and compatibility with different boat types and applications make it a top choice. With this steering system, you can take full control and navigate comfortably while operating your vessel. It is specifically designed for high-performance boats with a single or multiple outboards up to 700 HP, making it the preferred option for center consoles, cruisers, and other vessels. Trust in the quality of this hydraulic system, which is the go-to choice of OEMs for various marine applications.

Important Update: Seastar Helm Update to -4

The latest series of helms has been redesigned to provide a better experience for the vessel operator:

  • New valve technology ensures tighter, quieter, and more responsive steering, while minimizing the potential for chattering when dealing with overrunning steering loads.
  • More durable check valves, making the entire steering system more resilient to the rigors of trailering.
  • Revamped Design to enhance their aesthetics, and has introduced a new fill port plug design for easier maintenance.
  • HH6345-4 replaces the HH6345-3, HH6345 and is the direct replacement.


  • Most Hydraulic Steering applications for inboard/sterndrive/outboard boats up to 50ft
  • Single outboard engine boats that travel up to 55MPH, for boats over 55-60MPH see PRO Helm Pumps
  • Capable to be used in multiple stations


  • Dual bearings prevent excess free play
  • Smooth Operation and Feel
  • 48° of tilt articulation
  • 5 positive lock positions
  • 4.25 turns lock-to-lock
  • Standard 3/4" tapered steering shaft
  • Maintenance Free
  • Warranty: 2 Year Limited


  • Front Mount Installation
  • 2.0 cubic inches
  • 1000 PSI Relief Valve Settings

What Comes In The Box:

  • HH6345-4 Helm Pump
  • Mounting Hardware
  • HF6004 Fitting Kit 2x ORB-5 90° repositionable elbow fittings

Downloads & Resources: 

Related Items & Spare Parts:


  • No Sales Tax on Purchases Outside of California
  • Buy Now Pay Later with Affirm or PayPal Pay Later
  • FREE Ground Shipping to the Contiguous 48 States
  • Formerly Teleflex, Seastar is now Dometic Marine
  • Seatech Marine Products, Inc. is an authorized dealer, and service center for Dometic Marine

International, USVI, Puerto Rican, Hawaiian, Alaskan Customers: We Ship Worldwide and USPS, Shipping Cost May Quote Too High on Our Web Site, Contact Us for A Quote.


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Warranty Information

Seatech Marine Products is an authorized dealer for Dometic that distributes Seastar Products, this part has a 2 Year Limited Warranty from them. Please visit their website for full details:
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