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

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SKU:
HC5347-3
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  • 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?

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

Downloads & Resources

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

Spare Parts for the HC5347-3

Part Link to Part
Seal Kit without wrench HS5167
Seal Kit with wrench HS5157
Hydraulic Oil HA5430H
Support Rod  HP6016
Bleeder Kit HF5548
-5 ORB Fittings HF6004
Ground Strap HA5477
Spacer Kit HA5477
Adjusting Nut HP6034

Related Parts

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

Other SeaStar Parts

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

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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