UC128-OBF Outboard Front Mount Hydraulic Cylinders

For use with outboard engines up to 300HP, the UC128-OBF cylinder is simple to install and fits almost every 2 and 4 stroke outboard engine in the market.

For dual engines, it is necessary to order a standard UC128-OBF cylinder (link arm on the starboard side of the cylinder) and a Port UC128-OBF cylinder (link arm on the port side of the cylinder).

Available in different versions depending on the applications on the outboard engines.

Product Features:

Heavy duty stainless steel cylinder rod, seals and link assemblies.
Constructed of top grade materials, built to last.
Adjustable boss style fittings for easy installation.
High resistance stainless steel connection bolt.
For outboard engines up to 300HP
Balanced: the number of turns lock-to-lock is equal port to starboard and vice versa
Simple to install
Fits most 2 and 4 stroke outboard engines in the market
The UC128 cylinders are recommended for use with UP25, UP28, UP33 and UP39 series helms and pre-assembled hoses
9.5mm fittings: for high pressure flex hose

Volume	12cc (7.3cu in)
Output Force	450kg
Inside Diameter	35mm
Stroke	185mm (7.28")
Fittings	9.5mm (3/8")
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.

SKU	Kit	Cylinder
1260112	1	UC128-OBF/1
1260115	2	UC128-OBF/2
1260118	3	UC128-OBF/3

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

Engine	Power	Year	Kit
Mercury® Mariner®	115-125-150 EFI 2S	1990-2007	1
	225-250 EFI 2S	2000-2007	1
	75-90-115 OPTIMAX	2004-to date	3
	135-150-175 OPTIMAX	1999-to date	1
	200-225-250 OPTIMAX	1999-to date	1
	RACING 300 OPTIMAX	1999-2011	1
	100-115 EFI 4T	2007-to date	1
	250 SALTWATER EFI 4S	2007-2011	1
	135-150-175-200 VERADO L4	2004-to date	1
	FOURSTROKE 175-200 V6	2018-to date	1
	FOURSTROKE 225-300 V8	2018-to date	1
Evinrude®	E75-E90 2S	2004-to date	2
	E115-E130-E135 2S V4	1995-to date	2
	E150-E175-E200-E225-E250-E300 2S V6	1995-to date	2
Yamaha®	115C-130B 2S	1990-2008	2
	75C-90 2S	1998-2008	2
	115C-130B 2S	1990-2008	2
	150F-200F-250G 2S	1996-2007	2
	150 HPDI VMAX 2S	2000-2008	2
	175-200-225-250-300 HPDI VMAX 2S	2000-2008	2
	F115-F150 EFI 4S	1999-2007	1
	F200-F225-F250 4S	2002-2007	2
	F70 4S	2010-to date	1P
	F115-F150-F175-F200 L4 4S	2004-to date	1
	F200-F225-F250-F300 V6 4S	2004-to date	2
Honda®	BF75-BF90 4S	1995-to date	1
	BF115-BF130 4S	1998-to date	3
	BF135-BF150 4S	2005-to date	1
	BF150 V-TEC 4S	2008-to date	1
	BF175-BF200-BF225- BF250 4S	2001-to date	1
Suzuki®	DF70-80-90 4T	1998-to date	2
	DF100-115-140 4S	1998-2008	1*
	DF100-115-140 4S	1998-to date	1
	DF150-175-DF200 L4 4S	2006-to date	1
	DF200-DF225-DF250-DF300-V6 4S	2004-to date	2
Tohatsu®	115-120-140 2S	2004-to date	2
	70-90-115 TLDI 4S	2004-to date	1
	BFT60-75-90 4S	2015-to date	1
	BFT80-100-115 4S	2015-to date	3
	BFT150-200-225-250 4S	2015-to date	1
Selve®	80 PORTOFINO/TIGERSHARK 2S	1995-2008	1
	150 WHITE SHARK 2S	2001-2007	2
	100EFI MARLIN -115 EFI NARWHAL- 150EFI KILLER WHALE 4S	2000-to date	1
Johnson®	BJ90-115-140 4S	2001-2007	1
	J90-115 V4 2S	1995-2007	2
	J150-175 V6 2S	1995-2007	2
	J200-225 V6 4S	2004-2007	2

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, 1x OL 150 Oil (1L), 2x T fittings 39502V, & 1x steering wheel

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UC128-OFB Installation Manual

SKU: P-1260010