Description
Dometic Seastar Front Mount Hydraulic Cylinder – Standard HC5345-3 Bullhorn Design
Performance
This pivoting cylinder from SeaStar offers the incredible steering ease and reliability that puts SeaStar hydraulic front mount cylinders way ahead of the competition. Throughout the steering arc, there simply isn’t anything that feels better to drive.
Simplicity
The Seastar Front Mount Cylinder will bolt up to virtually any outboard you want to put on SeaStar hydraulic front mount steering. Integral bleeders and a few components make installation a snap. Less moving parts and improved seals boost durability and reduce maintenance. Please refer to the charts below to confirm if this cylinder is correct for your setup.
Reliability
Dometic SeaStar took it’s previous cylinders outstanding design to the next level, improving seals bearings, fittings and corrosion protection.
Features- Seastar Front Mount Cylinder
- 20% less effort at hard over than competitive systems
- Rigid tilt tube mount for no compromise performance
- Unique pivoting tiller connection allows full engine articulation with independent tilt and trim on twin engines
- Ultra corrosion-resistant construction
- Painted components are anodised before coating for extra protection
- A small footprint fits virtually all splash wells
- Meets ABYC standards NMMA requirements
Seastar is now owned by Dometic and the branding on the packaging will be a mix of Dometic and Seastar. This is a genuine Dometic – Sestar steering cylinder.
Installation Guide – Seastar Website Link
Specifications 136.6cc (8.34cu. in) balanced Displacement, 35mm (1.375″) bore, 203mm (8″) stroke, 544mm (21″) overall width. Applications up to 300HP maximum For installation dimensions and engine application guide download PDF APPLICATION GUIDE Single Engine (Normal Use) Prior to selecting a cylinder from this application guide, please refer to our order guide to ensure that you are selecting the correct cylinder for your engine/boat.
| ENGINE MANUF. |
YEAR |
MODEL |
CYLINDER |
NOTES |
| Force |
1985 TO DATE |
90-150HP |
HC5345-3 |
|
| Honda |
1996 TO DATE |
75-90HP |
HC5345-3 |
|
| 1998 TO 2009 |
115-130HP |
HC5347-3 |
|
| 1998 TO DATE |
30-50HP |
HC5345-3 |
See Note 1 |
| 2001 TO DATE |
BF200-250 |
HC5445-3 |
|
| 2003 TO DATE |
BF135HP |
HC5345-3 |
|
| 2010 TO DATE |
115HP |
HC5345-3 |
|
| Johnson / Evinrude |
1977 TO 1990 |
65-300HP |
HC5348-3 |
|
| 1988 TO 1997 |
250-300HP V8 |
HC5342-3 |
|
| 1991 TO DATE |
40-300HP |
HC5345-3 |
Inc. ETech |
| 1996 TO DATE |
75-250HP FICHT |
HC5345-3 |
|
| 1998 TO DATE |
40-140HP 4-STROKE |
HC5358-3 |
See Note 1 |
| 2000 TO DATE |
115HP FICHT |
HC5358-3 |
See Note 1 |
| 2002 TO DATE |
200-225HP 4-STROKE |
HC5345-3 |
|
| 2007 TO DATE |
3.3L/3.4L 200-250HP |
HC5345-3 |
Inc. H.O. Models |
| Mercury |
1984 TO 1994 |
2.4/2.5HP EFI |
HC5345-3 |
See Note 2 |
| 1989 TO DATE |
75-300HP |
HC5345-3 |
|
| 1998 TO DATE |
30-60HP |
HC5345-3 |
See Note 1 |
| 2003 TO DATE |
115-300HP XS |
HC6345-3 |
See Note 3 |
| 2004 TO DATE |
150-200HP VERADO |
HC5345-3 |
See Note 4, 5 |
| Nissan |
1990 TO DATE |
90-140HP |
HC5345-3 |
|
| Suzuki |
1986 TO DATE |
100HP |
HC5345-3 |
|
| 1986 TO 2002 |
115-140HP |
HC5345-3 |
NOT 1996 |
| 1986 TO DATE |
150-300HP 2 & 4 STROKE |
HC5345-3 |
|
| 1996 ONLY |
115-140HP |
HC5348-3 |
|
| 1998 TO DATE |
40-140HP 4-STROKE |
HC5358-3 |
See Note 1 |
| Yamaha |
1990-2003 |
40-90 HP 2-STROKE |
HC5345-3 |
See Note 1 |
| 1986-DATE |
100-300 HP 2-STROKE |
HC5345-3 |
|
| 1997-DATE |
80-250 HP 4-Stroke |
HC5345-3 |
|
| 2000-DATE |
150-300 HPDI |
HC5345-3 |
|
| 2003-DATE |
25-70 HP 4-Stroke |
HC5348-3 |
See Note 1 |
| 2007-DATE |
200-300 HP 4.2L V6 4-Stroke |
HC5345-3 |
|
| 2007-DATE |
F300-F350 HP 5.3V8 |
HC5345-3 |
See Note 4 |
| 2011-2013 |
F115A |
HC5358-3 |
|
| 2014-DATE |
F115B |
HC5345-3 |
|
NOTES: 1. Requires spacer kit HO5090. 2. May require extensive cowling modifications. 3. MUST use High Strength Tiller bolt, part # HA5822. Refer to the Notice on this page identifying the high-strength bolt. 4. Optional cylinder part # HC5358. Slight interference may occur when using the HC5358, with the engine in the full tilt position. 5. Cylinder part # HC5358 may also be used in these single-engine applications, please see note #4 for interference concerns. NOTICES: 
High Strength Tiller bolt, part# HA5822. ALL cylinders shipped after June 1st, 2007 will have this bolt included in the cylinder package. Front Mount Cylinder part# HC5345-3 is included in the SeaStar Outboard Steering Kits HK6400A-3/HK63xxA-3. If your engine requires the use of a cylinder other than the HC5345-3 (see application guides) you will need to purchase the individual components (helm, cylinder, hoses, etc.) separately. CAUTION: SeaStar Solutions® recommends the use of SeaStar PRO (1500 psi) Kevlar steering hoses with SeaStar PRO Helms. APPLICATION GUIDE Twin Engine (Normal Use) Prior to selecting a cylinder from this application guide, please refer to our order guide to ensure that you are selecting the correct cylinder for your engine/boat. Seastar Hydraulic Front Mount Cylinder.
| ENGINE MANUF. |
YEAR |
MODEL |
CYLINDER |
TIE BAR KITS |
NOTES |
| Twin Engine Single Cyl. |
Twin Engine Dual Cyl. |
| Force |
1985 TO DATE |
90-150HP |
HC5345-3 |
HO5008A |
HO5008A |
|
| Honda |
1996 TO DATE |
75-90HP |
HC5345-3 |
HO6001 |
HO6002 |
See Note 3 |
| 1998 TO 2009 |
115-130HP |
HC5347-3 |
HO5063 |
HO5064 |
See Note 5 |
| 1998 TO DATE |
30-50HP |
HC5345-3 |
HO6001 |
HO6002 |
See Note 2 |
| 2001 TO DATE |
150HP 4-STROKE |
HC5345-3 |
N/A |
HO6002 |
See Note 7 |
| 2001 TO DATE |
225-250HP 4-STROKE |
HC5445-3 |
HO6001 |
HO6002 |
|
| 2003 TO DATE |
BF135HP |
HC5345-3 |
HO6003 |
HO6002 |
|
| 2010 TO DATE |
115HP |
HC5345-3 |
HO6003 |
HO6002 |
See Note 7 |
| Johnson / Evinrude |
1977 TO 1990 |
65-300HP |
HC5348-3 |
HO6003 |
HO6002 |
|
| 1988 TO 1997 |
250-300HP V8 |
HC5342-3 |
HO5001A |
HO5030 |
See Note 5 |
| 1991 TO DATE |
40-300HP |
HC5345-3 |
HO6003 |
HO6002 |
Inc. ETech Engines |
| 1996 TO DATE |
75-250HP FICHT |
HC5345-3 |
HO6003 |
HO6002 |
|
| 1998 TO DATE |
40-140HP 4-STROKE |
HC5358-3 |
HO6003 |
HO6002 |
See Note 2 |
| 2000 TO DATE |
115HP FICT |
HC5358-3 |
HO6003 |
HO6002 |
See Note 2 |
| 2002 TO DATE |
200-225HP 4-STROKE |
HC5345-3 |
HO6003 |
HO6002 |
|
| 2005 TO DATE |
E250 DPX VINDICATOR |
HC5348-3 |
HO6003 |
HO6002 |
|
| 2007 TO DATE |
3.3L/3.4L 200-250HP |
HC5345-3 |
HO6003 |
HO6002 |
Inc. H.O. Models. |
| Mercury |
1984 TO 1994 |
2.4/2.5HP EFI |
HC5345-3 |
HO6001 |
HO6002 |
See Note 4 |
| 1989 TO DATE |
75-300HP |
HC5345-3 |
HO6001 |
HO6002 |
See Note 3 |
| 1996 TO DATE |
75-200HP 2 & 4-STROKE |
HC5345-3 |
HO6001 |
HO6002 |
|
| 1998 TO DATE |
30-60HP |
HC5345-3 |
HO6001 |
HO6002 |
See Note 2 |
| 2002 TO 2003 |
225HP 4-STROKE |
HC5358-3 |
HO6001 |
HO6002 |
See Note 1 |
| 2003 TO DATE |
150-200XS |
MUST Use Tournament Cylinders. |
| 2003 TO DATE |
250-300 HP XS |
MUST Use Tournament Cylinders. |
| 2004 TO DATE |
150-200HP VERADO |
HC5345-3 |
HO6001 |
HO6002 |
|
| Nissan |
1990 TO DATE |
90-140HP |
HC5345-3 |
HO6001 |
HO6002 |
|
| Suzuki |
1986 TO DATE |
100HP |
HC5345-3 |
HO6003 |
HO6002 |
|
| 1986 TO 2002 |
115-140HP |
HC5345-3 |
HO6001 |
HO6002 |
NOT 1996 |
| 1986 TO DATE |
150-300HP 2 & 4 STROKE |
HC5345-3 |
HO6003 |
HO6002 |
|
| 1996 ONLY |
115-140HP |
HC5348-3 |
HO6001 |
HO6002 |
|
| 1998 TO DATE |
40-140HP 4-STROKE |
HC5358-3 |
HO6003 |
HO6002 |
See Note 2 |
| 2003 TO DATE |
90HP 4-STROKE |
HC5358-3 |
HO6003 |
HO6002 |
See Note 2 |
| 2013 TO DATE |
DF150 DF175 HP |
HC5345-3 |
HO6001 |
HO6002 |
|
| Yamaha |
1986 TO DATE |
100-250HP 2-STROKE |
HC5345-3 |
HO6001 |
HO6002 |
|
| 1986 TO DATE |
40-90HP |
HC5345-3 |
HO6003 |
HO6002 |
|
| 2000-DATE |
150-300 HPDI |
HC5345-3 |
HO6001 |
HO6002 |
|
| 2001 TO 2003 |
80-250HP 4-STROKE |
HC5358-3 |
HO6001 |
HO6002 |
See Note 1 |
| 2003 TO DATE |
F200-F250 3.3L |
HC5358-3 |
HO6001 |
HO6002 |
|
| 2003 TO DATE |
25-70HP 4-STROKE |
HC5348-3 |
HO6003 |
HO6002 |
|
| 2007 TO DATE |
200-300HP 4.2L V6 4-STROKE |
HC5345-3 |
HO6001 |
HO6002 |
See Note 2 |
| 2007 TO DATE |
F300-F350 HP 5.3V8 |
MUST use Tournament Cylinders |
|
| 2011-2013 |
115A |
HC5358-3 |
HO6003 |
HO6002 |
|
| 2014-DATE |
115B |
HC5345-3 |
HO6003 |
HO6002 |
|
NOTES: 1. HC5345 is optional for SINGLE ENGINE ONLY applications. DO NOT use HC5345 for Twin engine applications as operational interference may occur. 2. Requires kit HO5090. 3. Minimum engine center = 27?. 4. May require extensive cowling modifications. 5. HO5030 and HO5064 comes without tie-bar. 6. One cylinder per engine. Must use Mercury supplied tiller bolt for installation. 7. Interference will occur when using a single HC5345 cylinder and HO6003 tiebar when installed in the aft hole on the steering arm. Options include: +++a) install tiebar into most forward hole (this will limit steering articulation), +++b) purchase K-6 Cylinder, and tiebar kit part # HO5009. There will no be no interference when using twin HC5345 cylinders. NOTICE: HO6001, HO6002 and HO6003 are for engine centers up to 36?. For wider engine centers please contact SeaStar Solutions Technical Support.
For Outboards up to 150Hp you can also consider the Baystar Hydraulic Steering Compact Cylinder
SeaStar Solutions Code: HC5345-3
Seastar Steering Kit Quick Connect 3.0 In A Box 10Ft
or 4 payments of 
