BayStar HK43004 Compact Hydraulic Steering Kit (No Hose)
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BayStar HK43004 Compact Hydraulic Steering Kit
The BayStar HK43004 is a complete compact hydraulic steering kit designed for single-engine outboard boats up to 150 HP. It's an ideal entry point into hydraulic steering for runabouts, inflatables, and family day boats — delivering noticeably smoother, more effortless steering compared to mechanical cable systems.
The compact cylinder is sized to fit most standard splashwells, and both the helm and cylinder feature adjustable O-ring fittings that simplify installation and allow the fittings to be repositioned after the fact if needed. The kit includes everything except hoses, which are sold separately to suit your specific installation routing.
Meets ABYC standards and NMMA certification requirements.
Key Specifications
- Kit Model: HK43004
- Application: Single-engine, single-station outboard
- Max Engine Power: Up to 150 HP (ABYC standard tilt tube required)
- Lock-to-Lock Turns: 5
- Helm Footprint: 5" (requires 3" dash hole — standard or tilt)
- Minimum Splashwell: 5" H × 6" D × 21" W
- Shaft: Standard 3/4" tapered
- Dual Station: Not compatible — single station only
- High-Performance / High-Speed Use: Not recommended
- Certifications: ABYC compliant, NMMA certified
- Weight: 8.75 kg (19.3 lbs)
What's Included
- BayStar Helm — 1.4 cu. in. with adjustable O-ring fittings
- HC4645H3 — BayStar Compact Cylinder
- HA5430 (×2) — Hydraulic Oil, 1 Litre each
- Fittings, tubing, fill kit & installation instructions
Note: Hoses are not included and must be ordered separately to suit your installation. This kit is designed for single-engine, single-station use only and is not suitable for high-speed or high-performance applications. Consult a qualified marine technician for installation.
Parts Desk Insights
The BayStar HK43004 is the right recommendation for customers with a single outboard up to 150 HP who want to upgrade from cable steering on a runabout, inflatable, or light family boat. It's a strong value kit — everything is included except hoses, so always confirm the customer orders the correct hose set for their installation at the same time. Key qualification questions: single engine only, single helm station only, and not for high-performance or high-speed hulls. If the customer has a larger engine, dual engines, or wants dual-station capability, step them up to the SeaStar HK64004 kit instead. Verify the engine has an ABYC standard tilt tube before confirming compatibility. The compact cylinder is a practical fit for most standard splashwells, but confirm minimum splashwell dimensions (5" H × 6" D × 21" W) if the customer has an unusual transom layout.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.