SeaStar HK7520A-3 PRO Hydraulic Steering System Kit w/ 20ft Hoses

Description

We have the SeaStar HK7520A-3 for sale, a complete SeaStar Pro hydraulic outboard steering kit with a 20 foot hose kit. SeaStar Pro is designed for high performance and fast boats, especially those exceeding 60 mph, and suits single outboards up to 350 HP. It features 4.25 turns lock to lock, patented No FeedBack lock valves and a standard 3/4 inch tapered keyed steering shaft, and it exceeds NMMA and ABYC standards. It is new, made in Canada, carries a 2 year warranty, and we ship worldwide.

What Is in the SeaStar HK7520A-3 for sale

Specifications

Why SeaStar Pro?

Mechanical cable steering is cheap, but it gets heavy and vague as engines grow, and torque from the propeller kicks back through the wheel. Hydraulic steering fixes that. Turning the wheel pumps fluid to a cylinder at the engine, giving light, precise steering. SeaStar Pro is built for fast boats where precision matters most. The No FeedBack lock valves stop propeller torque from feeding back into the wheel, so the boat holds its line and you are not fighting the helm at speed.

Will It Fit My Boat?

• Engine: single outboard up to 350 HP.
• Dash: the Pro helm needs a 3 in (76 mm) cut out.
• Splashwell: minimum 21 in (534 mm) width for the cylinder.
• Engine compatibility: the HC6345-3 Pro cylinder suits most outboards. Check SeaStar’s application guide for your engine model.
• Hose length: this kit includes 20 ft hoses. Measure your run from helm to engine, following the route the hoses will take, before ordering.
• Steering wheel: the shaft is a standard 3/4 in tapered keyed shaft, so most standard wheels fit.

Send us your engine model and boat details and we will help confirm compatibility for the SeaStar HK7520A-3 for sale.

Installation Overview

1. Remove the old steering system.
2. Cut or adapt the dash for the 3 in helm cut out and mount the helm.
3. Mount the HC6345-3 cylinder to the outboard following SeaStar’s instructions.
4. Route the 20 ft hoses from helm to cylinder, avoiding sharp bends and chafe points.
5. Fill and bleed the system with the included fluid and filler kit.
6. Check full lock to lock travel with no binding, and test at the dock before running.

If you are not confident with hydraulic systems, have a qualified marine technician install it. Correct bleeding is essential for safe, responsive steering.

Maintenance

• Check fluid level and hose condition at the start of each season.
• Inspect fittings for leaks.
• Look for cylinder rod wear or corrosion, and rinse it after salt water use.
• Use only SeaStar recommended fluid.

Matching Outboards

The SeaStar Pro suits high performance single outboards such as our Suzuki 250 HP, Mercury 250 HP and Yamaha 350 HP outboards.

FAQ: SeaStar HK7520A-3 for sale

What is the maximum engine size?

Single outboards up to 350 HP.

How long are the hoses?

20 ft (hose kit HO5720).

Is fluid included?

Yes, 2 quarts of HA5430H plus a filler kit.

What size dash hole is needed?

3 in (76 mm).

Do you ship the SeaStar HK7520A-3 for sale worldwide?

Yes. Shipping weight is 27 lb.

Buy From NJ Marines Outboard Engines

We are based in Fresno, California, and ship steering systems, parts and outboards worldwide. Call or WhatsApp +1 209 690 5983 or use our contact page. Please read our terms and conditions and refund and return policy. More from the maker at the Dometic website, home of SeaStar Solutions.

Browse more accessories or see all our outboard engines for sale.