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Ultraflex Nautech Hydraulic Steering Kits 300hp

Ultraflex Nautech Hydraulic Steering Kits 300hp

$1,789.42 AUD
$1,789.42 AUD
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Ultraflex Nautech OBF all-in-one hydraulic steering kits are designed for outboard engines up to 300hp and will fit most engines including Evinrude, Honda, Johnson, Mercury, Mariner, Suzuki, Tohatsu, Nissan, Selva and Yamaha. The number of  wheel turns 4.3 from lock to lock.

The kit comes packaged with all the required parts to fit to your boat including a helm pump, outboard engine cylinder, two litres of hydraulic oil - hose kits sold separately.

The UC128-OBF front mount cylinder is not recommended for use in installations where the boat speed exceeds 55 mph (48 knots) (65 mph (56 knots) in dual engine, dual cylinder
and counter rotating engines application). Not intended for use in racing applications.

Nautech OBF Hydraulic Steering Kit Contains:

  • 1x UC128-OBF front mount outboard cylinder. See engine application guide below
  • 1x UP28F front mount helm pump
  • 2x OL150 Hydraulic Steering Oil 1L bottles

UC128-OBF Cylinder Specifications:

  • Volume: 120 cc - 7.3 cu.in
  • Output force: 450kg (992 lbs)
  • Internal diameter: 35mm (1.37")
  • Stroke: 185 mm (7.28”)
  • 3/8” (9.5mm) Fittings for high pressure flex hose
  • Bleed fittings: DN5 Quick connect
Splashwell Dimension Requirements
No. Of Engines A (mm) B (mm) C (mm)
1 560 152 152
2 * 1110 152 152

*Note: For twin engine applications, the minimum distance between the two engine centers is 650mm

Engine Application Guide

Note: These recommendations should be used as a general reference only. 

JPW SKU Kit Cylinder
JPW18940   1   UC128-OBF/1
JPW18941   2   UC128-OBF/2
JPW18942   3   UC128-OBF/3

 

Engine Power Year Kit
Mercury®
Mariner®		 115-125-150 EFI 2S
225-250 EFI 2S
75-90-115 OPTIMAX
135-150-175 OPTIMAX
200-225-250 OPTIMAX
RACING 300 OPTIMAX
100-115 EFI 4T
250 SALTWATER EFI 4S
135-150-175-200 VERADO L4
FOURSTROKE 175-200 V6
FOURSTROKE 225-300 V8		 1990-2007
2000-2007
2004-to date
1999-to date
1999-to date
1999-2011
2007-to date
2007-2011
2004-to date
2018-to date
2018-to date		   1  
  1  
  3  
  1  
  1  
  1  
  1  
  1  
  1  
  1  
  1  
Evinrude® E75-E90 2S
E115-E130-E135 2S V4
E150-E175-E200-E225-E250-E300 2S V6		 2004-to date
1995-to date
1995-to date		   2  
  2  
  2  
Yamaha® 115C-130B 2S
75C-90 2S
115C-130B 2S
150F-200F-250G 2S
150 HPDI VMAX 2S
175-200-225-250-300 HPDI VMAX 2S
F115-F150 EFI 4S
F200-F225-F250 4S
F70 4S
F115-F150-F175-F200 L4 4S
F200-F225-F250-F300 V6 4S		 1990-2008
1998-2008
1990-2008
1996-2007
2000-2008
2000-2008
1999-2007
2002-2007
2010-to date
2004-to date
2004-to date

  2  
  2  
  2  
  2  
  2  
  2  
  1  
  2  
  1P  
  1  
  2  
Honda® BF75-BF90 4S
BF115-BF130 4S
BF135-BF150 4S
BF150 V-TEC 4S
BF175-BF200-BF225- BF250 4S		 1995-to date
1998-to date
2005-to date
2008-to date
2001-to date		   1  
  3  
  1  
  1  
  1  
Suzuki® DF70-80-90 4T
DF100-115-140 4S
DF100-115-140 4S
DF150-175-DF200 L4 4S
DF200-DF225-DF250-DF300-V6 4S		 1998-to date
1998-2008
1998-to date
2006-to date
2004-to date		   2  
  1*  
  1  
  1  
  2  
Tohatsu® 115-120-140 2S
70-90-115 TLDI 4S
BFT60-75-90 4S
BFT80-100-115 4S
BFT150-200-225-250 4S		 2004-to date
2004-to date
2015-to date
2015-to date
2015-to date		   2  
  1  
  1  
  3  
  1  
Selve® 80 PORTOFINO/TIGERSHARK 2S
150 WHITE SHARK 2S
100EFI MARLIN -115 EFI NARWHAL-
150EFI KILLER WHALE 4S		 1995-2008
2001-2007
2000-to date
2000-to date		   1  
  2  
  1  
  1  
Johnson® BJ90-115-140 4S
J90-115 V4 2S
J150-175 V6 2S
J200-225 V6 4S		 2001-2007
1995-2007
1995-2007
2004-2007		   1  
  2  
  2  
  2  

*NOTE: Suzuki® engines built from 1998 to 2008 installing   1   UC128-OBF/1 cylinder require optional KIT SU - 41954W.

UC128-OBF Cylinder Order Guide

System Application Wheel Turns Components
Single Engine / Single Cylinder Up to 300 hp max UP25: 4.8

UP28: 4.3

1x UC128-OBF Cylinder
1x UP25 or UP28 Helm Pump
1x KIT-OB Hose Kit
2x OL 150 Oil (1L)
1x Steering wheel (sold separately)

For a second station add: 1x UP39 or UP45 Helm Pump, 1x KIT-OB-2S fitting kit, 1x KIT-OB Hose Kit, 1x OL 150 Oil (1L) & 1x steering wheel
Dual Engine / Single Cylinder Up to 300 hp max (non-counter rotating engine)

Up to 500 hp max (counter rotating engine)		 UP25: 4.8

UP28: 4.3		 1x UC128-OBF Cylinder
1x UP39 or UP45 Helm Pump
1x KIT-OB Hose Kit
2x OL 150 Oil (1L)
1x A90 or A96 Tie Bar
1x Steering Wheel (sold separately)

For a second station add: 1x UP39 or UP45 Helm Pump, 1x KIT-OB-2S fitting kit, 1x KIT-OB Hose Kit, 1x OL 150 Oil (1L) & 1x steering wheel
Dual Engine / Dual Cylinder Up to 500 hp max (non-counter rotating engine)

Up to 600 hp max (counter rotating engine)		 UP39: 6.1

UP45: 5.3

1x UC128-OBF Cylinder
1x UP128p-OBF Cylinder (Port)
1x UP39 or UP45 Helm Pump
1x KIT-OB Hose Kit
3x OL 150 Oil (1L)
1x A90 or A96 Tie Bar
1x KIT OB-2C Connection Kit
1x Steering Wheel (sold separately)

For a second station add: 1x UP39 or UP45 Helm Pump, 1x KIT-OB-2S fitting kit, 1x KIT-OB Hose Kit, 2x T fittings 39502V, 1x OL 150 Oil (1L) & 1x steering wheel
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