SeaStar HH6491-4 Sport Plus Tilt 1.7 Hydraulic Boat Helm Pump

SeaStar HH6491-4 Sport Plus Tilt 1.7 Hydraulic Boat Helm Pump

The Dometic Seastar tilt steering marine hydraulic helm pump (HH64914). Flexibility of installation makes it the perfect helm pump for many applications and boat types. SeaStar hydraulic marine steering is the smoothest and most efficient steering system available today. Designed for normal pleasure and commercial use where standard rigging arrangements are in use.

New & Improved Features – Helm Upgrade to -4 Series

The HH6491-4 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:

• 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

Features:

• Preloaded dual taper bearings ensure minimal excess free play
• Smooth Operation and Feel
• 48° of tilt articulation
• 5 positive lock positions
• Standard 3/4" tapered steering shaft
• Accepts wheels up to 20"
• Maintenance Free
• Warranty: 2 Year Limited

Specifications:

• 1.7 cubic inches
• 1000 PSI Relief Valve Settings

What Comes In The Box:

• HH6491-4 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 HH6491-4 [HERE]

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

Alternatives:

1. 1.7 cu.in. Sport Tilt (Soft Bellows Cover) HH6191-3
2. 1.7 cu.in. Classic Tilt (Replaces older traditional tilt helms) HH6541-3
3. 1.7 cu.in. Front Mount Helm Pump HH5271-3
4. 1.7 cu.in. PRO Sport Plus Tilt (Rated at 1500PSI - for "Aggressive USE") HH6489-3

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
• 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.