Ultraflex OB-GT/M-60 GoTech Hydraulic Steering Hose Kit

The Ultraflex KIT OB-GT/M-60 42669C is a cut-to-length hydraulic steering hose kit for compatible Ultraflex GoTech single-station steering systems. It contains two 6m / 19.7ft high-pressure hoses with a 1/4in internal diameter. Each hose has a swivel-nut fitting preassembled at one end and is supplied with a loose reusable fitting for installation on the shortened end. The kit is designed only for GoTech systems with a maximum relief-valve pressure of 55 bar / 800psi.

Product Identification

• Brand: Ultraflex
• Product range: KIT OB-GT/M
• Product category: Marine hydraulic steering hose kit
• Model: KIT OB-GT/M-60
• Manufacturer part number: 42669C
• Supplier catalogue code: 14-48120-2
• Application: Compatible Ultraflex GoTech hydraulic steering systems
• Steering configuration: Single station
• Number of hoses: Two
• Length of each hose: 6m / 19.7ft
• Hose internal diameter: 1/4in
• Maximum system relief-valve pressure: 55 bar / 800psi
• Preassembled fittings: One swivel-nut fitting on one end of each hose
• Loose fittings supplied: Two reusable OB-F1/4 fittings
• Loose fitting part number: 42656T
• Reinforcing sleeves: Not included
• Cut-to-length installation: Yes
• Minimum bend radius: 250mm / 9.8in
• GoTech compatibility: Yes
• Standard 70-bar system compatibility: No

What Is This Hydraulic Hose Kit Used For?

The Ultraflex OB-GT/M-60 connects the hydraulic helm pump to the steering cylinder in a correctly specified GoTech steering system.

The two hoses form the pressure and return paths between the helm and cylinder. When the steering wheel is turned, hydraulic oil travels through one hose to move the cylinder while displaced oil returns through the second hose.

The kit is intended for:

• Compatible Ultraflex GoTech hydraulic steering systems
• Single-steering-station installations
• GoTech systems requiring 1/4in hydraulic hose
• New hydraulic steering installations
• Replacement of an existing compatible OB-GT/M hose pair
• Installations where the supplied 6m hoses must be shortened to suit the boat

The hose kit does not determine engine-power capacity. The helm, cylinder, hose kit, hydraulic fluid and engine application must be approved as one complete steering system.

What Is Included?

The Ultraflex KIT OB-GT/M-60 is supplied with:

• Two high-pressure flexible hydraulic hoses
• 6m / 19.7ft length per hose
• One swivel-nut fitting preassembled on one end of each hose
• Two loose reusable Ultraflex OB-F1/4 fittings
• Reusable fitting part number 42656T

Not included:

• Hydraulic steering helm
• Hydraulic steering cylinder
• Hydraulic steering oil
• Steering wheel
• Reinforcing or anti-kink sleeves
• Bulkhead or through-hull fittings
• Additional reusable fittings
• Filling or bleeding kit
• Additional steering-station plumbing
• Installation tools

The two loose fittings are intended for the unassembled ends after the hoses have been measured and cut to the required length.

Which Steering Systems Are Compatible?

The OB-GT/M-60 must only be used with compatible Ultraflex GoTech hydraulic steering systems.

Before ordering, confirm:

• The steering system is an Ultraflex GoTech system
• The helm and cylinder are designed for 1/4in hose
• The maximum relief-valve pressure does not exceed 55 bar / 800psi
• The installation uses one steering station
• Two 6m hoses provide sufficient routed length
• The selected helm and cylinder are approved for use together
• The system does not require a bulkhead or R5 through-hull hose kit
• The existing fittings and connection threads match the GoTech specification

The OB-GT/M-60 is not suitable for:

• Standard Ultraflex 70-bar / 1000psi steering systems
• SilverSteer systems
• MasterDrive systems
• Multi-station systems requiring additional plumbing
• Systems requiring 5/16in or 3/8in hydraulic hose
• Steering systems from another manufacturer unless compatibility is explicitly confirmed

Do not select a hydraulic hose kit solely from its length or external appearance.

What Is the Difference Between OB-GT/M-60 and OB/M-60?

The two hose kits are not interchangeable.

KIT OB-GT/M-60:

• Designed only for GoTech systems
• Maximum relief-valve pressure of 55 bar / 800psi
• 1/4in hose internal diameter
• Uses OB-F1/4 reusable fittings
• Reusable fitting part number 42656T
• Reinforcing sleeves are not included
• Available as a 6m cut-to-length kit

KIT OB/M-60:

• Designed for compatible standard 70-bar systems
• Maximum relief-valve pressure of 70 bar / 1000psi
• 5/16in hose internal diameter
• Uses OB-F5/16 reusable fittings
• Reusable fitting part number 40849U
• Two reinforcing sleeves are included
• Not recommended for SilverSteer or MasterDrive systems

The OB/M-60 must not be substituted for the OB-GT/M-60 in a GoTech installation. The internal diameter, reusable fitting and permitted system pressure are different.

Can the Hoses Be Cut to Length?

Yes. Both 6m hoses can be shortened at their unassembled ends to suit the installed route.

Only the supplied or identical approved Ultraflex OB-F1/4 42656T reusable fittings may be used on the shortened hose ends.

Before cutting:

• Measure the complete routed distance between the helm and cylinder
• Identify which end must retain the factory-assembled fitting
• Allow sufficient length for smooth hose bends
• Allow for engine or cylinder movement
• Include enough length for future servicing
• Confirm that the hose will not be under tension at either steering limit
• Check that both hoses can follow the same safe route

Do not cut the hose until the route and fitting positions have been confirmed.

The reusable fittings must be installed according to the separate Ultraflex fitting instructions. An incorrectly assembled fitting can leak, detach or allow air into the steering system.

Dimensions and Fitment

• Number of hoses: Two
• Length per hose: 6m / 19.7ft
• Hose internal diameter: 1/4in
• Minimum bend radius: 250mm / 9.8in
• Preassembled ends: One per hose
• Installer-assembled ends: One per hose
• Reusable fitting type: OB-F1/4
• Reusable fitting part number: 42656T
• Reinforcing sleeves: Not supplied
• Steering-station configuration: Single station

The 250mm minimum bend radius applies throughout the installed route. A tighter bend can damage the internal hose structure and restrict hydraulic flow.

Pressure Rating and System Limits

The OB-GT/M-60 is manufactured for GoTech steering systems with a maximum relief-valve pressure of:

• 55 bar
• 800psi

This figure is the limiting system condition and is not the normal continuous operating pressure.

The hose kit must not be used to increase the pressure capacity of a steering system. Every component must remain within the rating specified for the complete GoTech installation.

Do not use the OB-GT/M-60 with a 70-bar or 120-bar steering system.

Construction and Design

• Pair of flexible high-pressure hydraulic hoses
• 1/4in internal hose diameter
• One factory-assembled swivel-nut fitting per hose
• Two installer-fitted reusable connections
• Cut-to-length design
• Dedicated GoTech compatibility
• 55-bar / 800psi system rating
• Single-station configuration
• No separate reinforcing sleeves
• Designed to connect a compatible helm and hydraulic cylinder
• Manufactured for marine hydraulic steering applications

The cut-to-length arrangement allows excess hose to be removed while retaining a factory-assembled fitting at one end of each hose.

Installation and Use

Hydraulic steering is safety-critical. Installation should be completed by a competent marine technician familiar with reusable hydraulic hose fittings.

Before installation:

• Confirm the exact GoTech helm and cylinder models
• Check that the system requires KIT OB-GT/M
• Inspect both hoses and all fittings for damage
• Measure the complete hose route
• Confirm the 250mm minimum bend radius can be maintained
• Check the movement of the engine or cylinder
• Prevent dirt, water and debris from entering the hoses
• Obtain the correct Ultraflex installation instructions

During installation:

• Route both hoses clear of sharp edges
• Keep hoses away from hot exhaust and engine components
• Avoid areas where the hoses may be crushed
• Do not pull the hoses tight
• Allow movement through the complete steering and tilt range
• Cut only the unassembled hose ends
• Install only OB-F1/4 42656T reusable fittings
• Follow the specified fitting-assembly procedure
• Do not twist the hoses while tightening the swivel nuts
• Secure the hoses without crushing or deforming them
• Use the hydraulic steering oil specified for the complete GoTech system

After installation and bleeding, check that:

• The steering operates smoothly in both directions
• The cylinder reaches its complete permitted travel
• No hose becomes tight at any steering or tilt position
• All fittings remain dry and leak-free
• No hose rubs against another component
• The helm-fluid level remains correct
• No excessive free movement is present at the steering wheel
• The steering system holds its position consistently

The boat must not be operated if a hose leaks, becomes stretched, is kinked or shows signs of internal or external damage.

Maintenance and Inspection

Inspect the hose kit at least every six months.

Check:

• The complete visible length of both hoses
• Factory-assembled fittings
• Installer-assembled reusable fittings
• Swivel-nut tightness
• Abrasion, cuts, cracking or blistering
• Hose movement through the steering and tilt range
• Contact with heat, sharp edges or moving components
• Hydraulic-fluid leakage
• Corrosion or damage at the connection points
• Correct hose support and routing

Replace a hose that is kinked, abraded, crushed, leaking or internally damaged. Do not repair a pressure hose with tape, clamps or an unapproved splice.

Frequently Asked Questions

Is the OB-GT/M-60 suitable for every Ultraflex hydraulic steering system?

No. It must only be used with compatible Ultraflex GoTech systems operating with a maximum 55-bar / 800psi relief-valve pressure.

Are both hoses 6m long?

Yes. The kit contains two hoses, each supplied at 6m / 19.7ft.

Can the hoses be shortened?

Yes. The unassembled end of each hose can be cut to the required length and fitted with the supplied reusable OB-F1/4 connection.

Are fittings supplied at both ends?

One fitting is preassembled on each hose. Two loose reusable fittings are supplied for the cut ends.

Are reinforcing sleeves included?

No. Ultraflex states that anti-wrinkle or reinforcing sleeves are not supplied with the OB-GT/M kit.

Can this kit replace an OB/M-60 hose kit?

No. The OB-GT/M-60 has 1/4in hoses and a 55-bar rating, while the OB/M-60 has 5/16in hoses and a 70-bar rating.

Can it be used on a dual-station system?

This kit is specified for a single-station application. Additional approved hoses and fittings are required for a multi-station installation.

Is hydraulic oil included?

No. Hydraulic steering oil is supplied separately unless included as part of a complete GoTech steering package.

Key Features

• Ultraflex KIT OB-GT/M-60 hydraulic hose kit
• Manufacturer part number 42669C
• Supplier catalogue code 14-48120-2
• Designed exclusively for compatible GoTech steering systems
• Two high-pressure hydraulic hoses
• 6m / 19.7ft length per hose
• 1/4in internal hose diameter
• One swivel-nut fitting preassembled on each hose
• Two loose reusable OB-F1/4 fittings included
• OB-F1/4 fitting part number 42656T
• Cut-to-length installation
• Maximum relief-valve pressure of 55 bar / 800psi
• 250mm / 9.8in minimum bend radius
• Single-steering-station application
• Reinforcing sleeves not included
• Not suitable for standard 70-bar systems
• Helm, cylinder, hydraulic oil and steering wheel supplied separately
• Hose and fitting condition should be inspected every six months

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