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SeaStar HC5347-3 Outboard Front Mount Cylinder (115-130HP Honda)

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SKU:
HC5347-3
Condition:
New
  • SeaStar HC5347-3 Outboard Front Mount Cylinder (115-130HP Honda)
  • SeaStar HC5347-3 Outboard Front Mount Cylinder (115-130HP Honda)
  • SeaStar HC5347-3 Outboard Front Mount Cylinder (115-130HP Honda)
  • SeaStar HC5347-3 Outboard Front Mount Cylinder (115-130HP Honda)
MSRP: $1,081.97
$759.97
— You save $322.00
In Stock - Ships FREE Same Day (Order By 5pm EST M-F)

Description

SeaStar HC5347-3 Outboard Front Mount Cylinder (115-130HP Honda)

The Dometic SeaStar HC53473 is a high-performance, front-mount (pivoting) hydraulic steering cylinder designed for demanding outboard installations-including heavy single, twin, or triple engine setups. Like the rest of SeaStar’s upgraded -3 lineup, this model features enhanced corrosion resistance, a robust 8-bolt end-gland sealing system, and positionable stainless-steel -5 ORB hose fittings for cleaner routing and easier installation.

Engineered to exceed the performance of legacy models like the HC5347, the HC5347-3 is a direct replacement with upgraded internals and fittings-perfect for offshore boats, performance hulls, or repowers involving high-output outboards. It pairs seamlessly with all SeaStar helm pumps, tilt helms, and power assist units, delivering smooth, precise hydraulic control at any speed.

Key Features & Benefits

  • Supports up to 700 HP (total, counter-rotating) - system/installation dependent
  • Independent Engine Tilt for multi-engine configurations
  • Robust, Corrosion-Resistant Construction for tough offshore and saltwater use
  • Upgraded 8-Hole End-Gland Sealing System for improved serviceability and long-term performance
  • Positionable Stainless -5 ORB Fittings (upgrade from 1/4" NPT) - allows cleaner, more secure hose routing
  • Smooth, Predictable Steering Control - compatible with all SeaStar helm pumps, including Power Assist
  • Variable Lock-to-Lock Turns based on helm size
  • Warranty: 2-Year Limited
  • Made in Canada

Technical Specifications

  • Direct Replacement: HC5347 (earlier version; “-3” adds -5 ORB ports and internal enhancements)
  • Mount Style: Front Mount, Pivoting
  • Shaft Diameter: 0.75" (19 mm)
  • Stroke Length: 8.00" (203 mm)
  • Cylinder Bore: 1.375" (~35 mm)
  • Displacement (Fluid Volume): 8.34 cu in (136.6 cc)
  • Ports / Fittings: Positionable stainless -5 ORB hose fittings (do not use NPT)
  • Overall Dimensions (approx.): Width 21-3/4" (552 mm), Depth 4-7/8" (124 mm), Height 2-5/8" (67 mm)
  • Weight (approx.): 9.5 lb
  • Included in the Box: Complete cylinder with -5 ORB fittings & full installation manual

Will This Cylinder Work on My Boat?

Link Link Description
LINK (WEB) SeaStar Front Mount Cylinder Application Guide
LINK (WEB) Dometic SeaStar Hydraulic Parts Lookup
LINK (PDF) SeaStar Hydraulic Steering Selection Guide
LINK (WEB) Tech Support Page (First Link)

Downloads & Resources

Link Link Description
LINK (PDF) SeaStar Front Mount Outboard Cylinder Installation Manual
LINK (PDF) SeaStar Front Mount Cylinder Fill and Bleeding Instructions
LINK (PDF) Dometic SeaStar Warranty Sheet
LINK (WEB) SeaStar Cylinder REBUILD SERVICE

Spare Parts for the HC5347-3

Part Link Description
HS5167 Seal Kit without wrench for most front mount cylinders
HS5157 Seal Kit with wrench for most front mount cylinders
HA5430H Hydraulic Oil specifically for SeaStar
HP6016 Support Rod for most front mount cylinders
HF5548 Bleeder Kit for most front mount cylinders
HF6004 -5 ORB Fittings for most -3 front mount cylinders
HA5477 Ground Strap for most front mount cylinders
HP6033 Spacer Kit for most Pivot Plates front mount cylinders
HP6034 Adjusting Nut for most front mount cylinders

Related Parts

Part Link Description
HC6345-3 PRO Front Mount Hydraulic Boat Cylinder
HC5345-3 Universal front-mount cylinder for most single, twin, or triple outboard setup
HC5348-3 Designed specifically for Suzuki twin engines with factory center-push brackets
HC5358-3 Center-push cylinder for twin outboards on Suzuki, Yamaha, Evinrude, and COX
HC5445-3 Heavy-duty front-mount cylinder for high-horsepower or high-torque outboards
HC5347-3 Legacy front-mount cylinder for early Yamaha 2-stroke and 4-stroke V6 engines
HO5090 Low Horsepower Outboard Engine Spacer Kit
HO6001 Single Cylinder Tie Bar
HO6002 Twin Cylinder Tie Bar
HO6003 OMC Ficht/Suzuki Tie Bar
HA5520 Twin Engine Dual Cylinder Drive Bracket
HA5521 Twin Engine Single Cylinder Drive Bracket
HA5522 Hardware Kit Adjustable Tie Bar

Other SeaStar Parts

Part Number Description
Power Assist Units Latest Gen Power Assists
Auto Pilot Units SeaStar Autopilots
Power Assist Autopilot Combos SeaStar PA/AP Combos
SeaStar Hose Hose for SeaStar & BayStar
SeaStar Helm Pumps SeaStar & BayStar Helms
SeaStar Cylinders SeaStar & BayStar Cylinders
SeaStar Jackplates SeaStar Jackplates for SeaStar & BayStar

Questions?

  • No Sales Tax on Purchases Outside of California
  • Buy Now Pay Later with Affirm or PayPal Pay Later
  • FREE Ground Shipping to the Lower 48 States
  • Formerly Teleflex, SeaStar is now Dometic Marine
  • Seatech Marine Products, Inc. is an authorized dealer, and service center for Dometic Marine

International, USVI, Puerto Rican, Hawaiian & Alaskan Customers: We Ship Worldwide and USPS, Shipping Cost May Quote Too High on Our Website, Contact Us for A Quote.

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Warranty Information

Seatech Marine Products is an authorized dealer for Dometic that distributes Seastar Products, this part has a 2 Year Limited Warranty from them. Please visit their website for full details: https://www.dometic.com/en-us/outdoor/support/warranty-statements
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