Glydus K175 Outboard Hydraulic Steering Kit - Up To 175HP

The Glydus K175 Hydraulic Steering Kit is a packaged single-cylinder steering system for compatible single outboard engines up to 175HP. It includes an H18 18cc helm pump, OC-175 front-mount cylinder, two 7.5m factory-crimped hydraulic hoses and two litres of HO-150 steering fluid.

The standard K175 configuration provides approximately 6.8 steering-wheel turns from lock to lock. It is intended for new installations and conversions from mechanical steering where the outboard make, model, year, gearcase and splashwell dimensions match the Glydus application guide.

Product Identification

• Brand: Glydus
• Product name: Glydus K175 Outboard Hydraulic Steering Kit
• Kit part number: K175
• Marine Scene SKU: MA-K175
• Product category: Single-outboard hydraulic steering kit
• Configuration: Single cylinder / single outboard
• Maximum engine rating: Up to 175HP, subject to application compatibility
• Helm pump: H18, 18cc
• Steering cylinder: OC-175
• Hydraulic hoses: Two CT-7.5 hoses, 7.5m each
• Steering fluid: Two litres of HO-150
• Standard wheel turns: Approximately 6.8 lock-to-lock
• Steering wheel included: No

What Is the Glydus K175 Used For?

The K175 converts steering-wheel movement into hydraulic pressure, moving the front-mounted steering cylinder and turning a compatible outboard engine.

• Compatible single outboards up to 175HP
• Single-engine fishing boats
• Leisure powerboats
• RIBs and open boats
• Workboats using a compatible single-outboard installation
• New hydraulic steering installations
• Replacement of compatible mechanical steering systems

The 175HP figure is a maximum kit rating, not a universal compatibility guarantee.

What Is Included?

• One Glydus H18 18cc hydraulic helm pump
• One Glydus OC-175 outboard steering cylinder
• Two Glydus CT-7.5 hydraulic hoses
• Each hose measures 7.5m
• Factory-crimped hose connectors
• Two litres of Glydus HO-150 hydraulic steering fluid

What Is Not Included?

• Steering wheel
• Alternative cylinder variants such as OC175N or OC175I
• Glydus 350HP cylinder where required by the engine application
• SP1 spacer kit
• Engine-specific tiller plate or steering hook
• Additional hose length or dual-station components
• Dash-modification hardware
• Installation labour

Will the K175 Fit Every Outboard Up to 175HP?

No. Engine horsepower alone is not sufficient to confirm compatibility.

• Confirm the outboard manufacturer, model and model year.
• Confirm whether the engine is two-stroke or four-stroke.
• Check the standard or high-performance gearcase configuration.
• Match the required Glydus cylinder code.
• Measure the available splashwell width.
• Check clamp-bracket and transom requirements.
• Confirm steering-hook or spacer requirements.
• Measure the required hydraulic-hose route.

The standard kit contains an OC-175 cylinder. If the application guide specifies OC175N, OC175I, OC350 or another cylinder, the standard K175 package is not a direct match.

Important Engine-Compatibility Notes

• Note A: Certain installations require the outboard clamp brackets to be modified and the engine bolted directly to the transom.
• Note B: Some Yamaha applications require steering hook part number 63D-48511-00-4D.
• Note C: High-performance engines and outboards using a 4-3/4-inch gearcase, including certain Command Thrust configurations, require a Glydus 350HP cylinder.
• Honda 1998–2010 115–130HP: Listed as not applicable in the Glydus K175 guide.
• Johnson 115HP two-stroke: The tiller plate may need to be inverted.

Any structural modification should be completed by a competent marine installer in accordance with the engine and steering-system instructions.

How Do I Check Splashwell Clearance?

The OC-175 cylinder moves laterally as the engine turns. The splashwell must provide sufficient space for full cylinder travel, hydraulic-hose bends and engine trim and tilt movement.

• Check full port and starboard cylinder movement.
• Maintain clearance around the hydraulic fittings and bleed points.
• Keep the cylinder clear of control cables, wiring and deck mouldings.
• Turn and tilt the engine through its complete operating range.
• Confirm that the hoses cannot kink, chafe or become trapped.

Does the Kit Include Everything Required?

The kit contains the primary hydraulic components, hoses and fluid for the standard installation. Additional engine-specific parts may still be required.

• Alternative cylinder
• SP1 spacer kit
• Tiller plate
• Yamaha steering hook
• Different hose length
• Additional steering station
• Engine or transom modification

Construction and Design

• 18cc hydraulic helm displacement
• Front-mounted outboard cylinder
• Marine-grade hydraulic components
• Corrosion-resistant cylinder construction
• Factory-crimped hose ends
• Two independent hydraulic lines
• Hydraulic operation reduces mechanical cable friction
• Cylinder bleed fittings support system purging
• Serviceable helm and cylinder components

Installation and Safety

Hydraulic steering is a safety-critical system. Installation should be completed by a competent marine engineer.

• Confirm engine compatibility before dismantling the existing steering.
• Check splashwell clearance and engine trim movement.
• Mount the helm securely to a structurally suitable dashboard.
• Route hoses away from heat, sharp edges and moving components.
• Do not kink, crush or sharply bend hydraulic hoses.
• Protect hoses where they pass through bulkheads.
• Fit the cylinder in the orientation shown by Glydus.
• Use only compatible hydraulic steering fluid.
• Bleed all air from the system.
• Check every fitting for leakage.
• Confirm full steering travel in both directions.
• Recheck the installation with the engine fully trimmed and tilted.
• Do not use the boat if steering feels spongy, binds, leaks or fails to reach full travel.

Maintenance

• Check the helm, cylinder and hoses for fluid leakage.
• Inspect the cylinder rod for damage or corrosion.
• Check hose fittings for movement or chafe.
• Confirm that the helm remains securely mounted.
• Test full port-to-starboard travel.
• Investigate increased free play or steering effort.
• Maintain the hydraulic-fluid level.
• Bleed the system if air has entered.
• Replace damaged hoses rather than repairing them.
• Use the correct Glydus service parts for the H18 helm and OC-175 cylinder.

Key Features

• Packaged hydraulic steering system
• For compatible single outboards up to 175HP
• Single-cylinder configuration
• H18 18cc helm pump
• OC-175 steering cylinder
• Two 7.5m factory-crimped hoses
• Two litres of HO-150 fluid
• Approximately 6.8 wheel turns lock-to-lock
• Reduced steering effort compared with mechanical cable systems
• Corrosion-resistant marine construction
• Serviceable helm and cylinder components

Frequently Asked Questions

Is the K175 compatible with every 175HP outboard?
No. Compatibility depends on the engine manufacturer, model, year, gearcase and installation geometry.

Does the kit include a steering wheel?
No. A steering wheel must be ordered separately.

How long are the hydraulic hoses?
The standard package contains two factory-crimped 7.5m hoses.

How much steering fluid is included?
The standard package contains two litres of Glydus HO-150 hydraulic steering fluid.

How many turns does the steering take?
The catalogue configuration is approximately 6.8 turns from lock to lock. A different helm or cylinder configuration can alter the turn count.

What if the application guide specifies OC175I or OC175N?
The standard K175 kit contains OC-175. An application specifying a different cylinder requires an alternative package or confirmed cylinder substitution.

Can I install the system myself?
Only where you have the required marine hydraulic-steering knowledge, tools and installation instructions. Professional installation is recommended.

Kit Specifications

Included Component Specifications

Confirm the exact outboard make, model, year, gearcase, required cylinder code and splashwell dimensions before ordering. The standard K175 package is not a direct replacement for applications requiring OC175N, OC175I, OC350 or another cylinder.

Included Component Specifications