SeaStar HH6490-4 PRO Sport Plus Tilt 2.0 Hydraulic Boat Helm Pump

SeaStar HH6490-4 PRO Sport Plus Tilt 2.0 Boat Hydraulic Helm Pump

The Dometic SeaStar PRO outboard steering helms (HH64904) and cylinders are suited for critical high speed, single powered outboard boats, like bass, flats, combo race/ski and other performance orientated boats capable of speeds in excess of 60mph. Designed for the performance boater, Dometic SeaStar Pro is the ultimate steering system for high-speed single engine outboards.

New & Improved Features – Helm Upgrade to -4 Series

The HH6490-4 replaces HH6490-3 and HH6490 with significant upgrades:

✔ Enhanced Valve Technology – Provides quieter, tighter, and more responsive steering, minimizing chatter from overrunning loads.

✔ Stronger Check Valves – Improved durability and resilience, making the system more resistant to the stresses of trailering.

✔ Refined Aesthetics & Design – Features a sleek new look and a redesigned fill port plug for easier maintenance.

✔ Eliminated Flow Noise – Reduces hydraulic noise when coming off hard-over position, ensuring a smoother transition.

✔ Better Trailering Performance – Designed to withstand the rigors of trailering for longer service life.

✔ Tighter, More Responsive Steering – Delivers enhanced regrip performance, ensuring better control at higher speeds.

Applications:

• For single-engine application only
• Single outboard engine boats that travel in excess of 60 MPH

Features:

• Only needs a 3" dash cut out
• 2.0 Cu.In./Rev.
• 3/4" Tapered steering shaft
• Remote Fill Point
• Comes complete with elbow fittings
• Warranty: Limited 2 Year

What Comes In The Box:

• HH6490-4 Helm Pump
• Mounting Hardware
• HF6004 Fitting Kit 2x ORB-5 90° repositionable elbow fittings

Downloads & Resources: 

• SeaStar Boat Helm Installation Manual [PDF] 
• SeaStar Hydraulic Steering Selection Guide [PDF]
• SeaStar Marine Steering Catalog [PDF]
• Dometic Seastar Hydraulic Build Guide [HERE]
• We can rebuild your HH6490-4 [HERE]

Notes:

• Must be used with the SeaStar PRO Kevlar Hoses (HO57XX and HO82XX)
• Must be used with the PRO Cylinder HC6345-3 or HC6358-3
• Relief valve settings 1500PSI

Related Items & Spare Parts:

• HA5430H 1 Quart of SeaStar Fluid
• HA5438 Helm Bottle Filler Kit
• HP6032 Service Kit
• HF6004 Fittings
• HA5432 Non Vent Cap
• Seastar Hose
• Seastar Helm Pumps
• Seastar Cylinders

Questions?

• Tech Support: Tech Support Page
• Check Stock: Stock Inquiry Page
• Request a Shipping Quote: Request Quote Page

• No Sales Tax on Purchases Outside of California
• Buy Now Pay Later with Affirm or PayPal Pay Later
• Formerly Teleflex, Seastar is now Dometic Marine
• -3 HH6490 photos show, -4 will differ in some visual aspects*
• Seatech Marine Products, Inc. is an authorized dealer, and service center for Dometic Marine
• FREE Overnight Shipping to the Lower 48 States. (If the availability at the top of this page lists as "In Stock" and the processing time after that)

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.