Name: Glydus K350 Hydraulic Steering Kit for Single Outboard up to 350HP - 5.3 Turns
Brand: Marathon
SKU: K350
Price: 799.95 GBP
Availability: OutOfStock

Glydus K350 Hydraulic Steering Kit for Single Outboard up to 350HP - 5.3 Turns

Dispatched in 2-3 days

30 Day Return Policy

In stock, ready to ship
Backordered, shipping soon

Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.

£799.95

Tax included.

Glydus K350 Hydraulic Steering Kit

Premium Steering System for Outboards up to 350HP

The Glydus K350 is a comprehensive hydraulic steering solution specifically engineered for single outboard engines up to 350HP. Designed for "Regular Use" in marine environments, this kit provides a smooth, light, and highly responsive steering experience, significantly reducing operator fatigue compared to traditional cable systems.

RELIABILITY: Built with SS 316L hard chrome-plated piston rods and anodized aluminum components to withstand harsh saltwater conditions.

Kit Contents

✔ H25 Helm Pump: 25cc Displacement
✔ OC-350 Cylinder: 166cc Volume (Balanced)
✔ CT-7.5 Hoses: 2x 7.5m with crimped connectors
✔ HO-150 Fluid: 2 Liters ISO VG 15 grade
✔ All necessary installation hardware

Technical Specs

Max Engine Power:	350 HP
Wheel Turns:	5.3 Lock-to-Lock
Cylinder Volume:	166cc (10.1 cu.in)
Helm Displacement:	25cc per rev
Max Pressure:	1015 PSI (70 Bar)
Rod Diameter:	18mm

Compatibility / Fitment Guide

Make	Model/Application	Notes
Yamaha	100-350HP (2-Stroke & 4-Stroke)	40-90HP req. Spacer Kit SP1
Mercury	75-300HP (1989-Date)	Includes XS and Verado models
Suzuki	100-300HP (4-Stroke)	DF115-140 req. Spacer Kit SP1
Honda	30-250HP (1996-Date)	60-90HP req. Spacer Kit SP1
Tohatsu	40-250HP (1990-Date)	75-150HP req. Tiller Bolt
Cox Marine	300HP Diesel	2022-Date models

OEM Cross Reference

SeaStar Solutions	HK6400A-3 / HC5345-3 Equivalent
Multisteer	OC-350 / OH-350 Cylinder
BayStar	High-HP Upgrade (Replaces HK4200 kits)

Questions & Answers

Is this a genuine original part?

This is a premium quality Glydus steering kit, designed as a high-performance alternative to SeaStar systems, providing equal or superior durability for outboards up to 350HP.

How do I know if it is compatible?

This kit is compatible with most major outboard brands including Yamaha, Mercury, and Suzuki. Please check the Application Guide above; some smaller engines (e.g. Honda 60-90HP) require a specific spacer kit (SP1) for proper installation.

How many turns lock-to-lock will I get with this kit?

With the H25 helm pump (25cc) and OC-350 cylinder (166cc), you will achieve approximately 5.3 turns from lock-to-lock, providing a perfect balance between steering effort and responsiveness.

Note: Please verify your outboard model and year against the fitment guide. Professional installation is recommended for hydraulic steering systems. For further assistance, contact us at 4boats.co.uk.

For the products under £150 the shipping is £6.99.

Free delivery for most items over £150.

Why choose us

QUALITY MARINE PARTS

We source dependable marine products from established suppliers and continually refine our range using customer feedback.

TRUSTED SUPPLIERS

We work with trusted marine suppliers and distribution partners to provide reliable parts, equipment and fulfilment.

Simple_Image_Play_Built_into_Routine_Cosmetics_TikTok_In-Feed_Ad_1080_x_1080_px_10 - 4Boats

PERSONAL SERVICE

Every order is checked by the 4Boats team. Contact us before ordering if you need help with part numbers, compatibility or availability.

Glydus K350 Hydraulic Steering Kit for Single Outboard up to 350HP - 5.3 Turns