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      • Complete Seawater Circuit Maintenance Kits
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      • Fittings, Bolts & Misc Parts
    • Engine Hoses
      • 6BT 5.9 210/220 Diamond Engine Hoses
      • Early 6BTA 5.9 Diamond Hoses (1.5″ Raw Water Hoses)
      • 6BTA 5.9 330/370 Diamond Engine Hoses
      • 6CTA 8.3 430/450 Diamond Engine Hoses
      • QSB 5.9 Engine Hoses
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    • Engine Components
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        • Sherwood G2610 (replacement for G2603) Seawater Pump for Cummins QSC 8.3
        • Sherwood G2903 Seawater Pump for Cummins QSM11
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      • ZF220A & ZF220V Shift Valve Lever Repair Kit
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      • Cummins Custom Exhaust Flange Kit
      • Fuel Cooler Removal Kit
      • SMX Mechanical Oil Pressure Gauge Kit
    • General Boat Parts
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  • Products & ServicesParts & Components
    • Gaskets & O-Rings
      • Complete Seawater Circuit Maintenance Kits
      • Aftercooler O-Ring Kits
      • Heat Exchanger O-Ring & Gasket Kits
      • Valve Cover Gaskets
      • Intake Manifold Gaskets
      • Exhaust Manifold Gaskets
      • Turbocharger Gaskets and Hardware
      • Air Intake Gasket
      • Seawater Pump Gasket & O-Ring Kit
    • Engine Maintenance
      • Aftercooler & Heat Exchanger Maintenance Kits
      • Air Filter Kits
      • Engine Belts
      • Engine Gaskets & O-Rings
      • Grease & Sealants
      • Fuel Oil & Coolant Filters
        • Fuel Filters
        • Oil & Lube Filters
        • Coolant Filters
        • Hydraulic Filters
        • Transmission Filters
      • Impellers
        • Cummins Impellers
        • CAT Impellers
      • Thermostats
      • Zincs
      • Fittings, Bolts & Misc Parts
    • Engine Hoses
      • 6BT 5.9 210/220 Diamond Engine Hoses
      • Early 6BTA 5.9 Diamond Hoses (1.5″ Raw Water Hoses)
      • 6BTA 5.9 330/370 Diamond Engine Hoses
      • 6CTA 8.3 430/450 Diamond Engine Hoses
      • QSB 5.9 Engine Hoses
      • QSB 6.7 Engine Hoses
      • QSC 8.3 Engine Hoses
    • Engine Components
      • Aftercoolers
      • Heat Exchangers
      • Seawater Pumps
        • SMX 1730 Seawater Pump for 6BTA-M3 / 6CTA / 480CE / QSL9
        • SMX 1727 Seawater Pump
        • SMX 1722 Seawater Pump
        • SMX 1716 Seawater Pump
        • SMX QSB Seawater Pump
        • Sherwood G2610 (replacement for G2603) Seawater Pump for Cummins QSC 8.3
        • Sherwood G2903 Seawater Pump for Cummins QSM11
        • Sherwood M71 Seawater Pump for Cummins 6BT
        • Sherwood G1503 Seawater Pump for Cummins 4BTA
        • Seawater Pump Gasket & O-Ring Kit
        • Seawater Pump Elbow Kits
        • Seawater Pump Rebuild Parts
        • Impellers
          • Cummins Impellers
          • CAT Impellers
      • Engine Mounts / Vibration Isolators
      • Starter Motors
      • Alternators
      • Transmission Oil Coolers
      • Turbochargers & Parts
      • PTO Pulley Kits
      • Belt Tensioners
      • Idler Pulley Kits
      • Bosch Fuel Injection Pump Parts
      • Injectors
      • Air Heater Assemblies
    • Exhaust Systems
      • Factory Exhaust Elbows
      • Exhaust Manifolds
      • Turbo Exhaust Flanges
        • Cummins Custom Exhaust Flange Kit
        • SMX Exhaust Turbo Flange for Yanmar 4LH/4LHA
        • SMX Exhaust Turbo Flange for Yanmar 6LPA
        • SMX Exhaust Turbo Flange for Yanmar 6LYA 370/440
        • SMX Exhaust Turbo Flange for Volvo D4
        • SMX Exhaust Turbo Flange for Volvo D6
        • SMX Back to Back Marine Exhaust Flange Kit
      • Custom Marine Exhaust Design & Fabrication
    • Fuel Systems & Filters
      • Fuel Filtration Kits
      • Fuel Oil & Coolant Filters
        • Fuel Filters
        • Oil & Lube Filters
        • Coolant Filters
        • Hydraulic Filters
      • Fuel Coolers
      • Lift / Priming Pumps
      • Solid State Fuel Pumps
      • Vacuum Gauges
      • Squeeze Bulb Priming Kit
    • Steering Systems
      • Steering Cylinder Rams
      • Helm Pumps
      • Auto Pilot Pumps
      • Rudder Angle Indicators
    • Instrumentation & Electrical
      • Digital Display Panels
        • SmartCraft to SMX Digital Display Upgrade Kit
        • SMX ED-X Digital Display for QSM11 & 480CE
        • SMX DigitalView Mechanical Engine Digital Display for 6BTA / 6CTA
        • SMX J1939 SeaView Displays
          • SMX SeaView J1939 Single Digital Display Kit
          • SMX SeaView J1939 Double Digital Display Kit
        • SmartCraft Displays
          • Cummins SmartCraft VesselView 403 Upgrade Kit
        • Cummins DieselView & VesselView Display Upgrade Options
        • Which Cummins SmartCraft Display Do I Have?
      • Analog Instrument Panels
      • QSM11 Instrumentation
      • Gauges & Monitors
        • SMX Marine Boost / Pyro (EGT) Turbocator Gauge Kit
        • SMX Marine Turbo Boost Gauge Kit
        • SMX Marine Pyro (EGT) Gauge Kit
        • VDO Gauges
        • Rudder Angle Indicator Kits
        • SMX Mechanical Oil Pressure Gauge Kit
        • SMX Digital Voltage Monitor
      • Sending Units & Sensors
      • Alarm Systems & Switches
      • SMX Digital Voltage Monitor
      • Harnesses
      • SmartCraft Components
      • Switches & Electrical Parts
      • 24V to 12V Engine Conversions
    • Shift & Throttle Control Systems
      • Kobelt Marine Throttle & Shift Controls
      • Electronic Throttle Controls (ETC)
      • Glendinning Control Systems
      • Shift & Throttle Control Parts
    • Engine Upgrades & Add-Ons
      • EnviroVent Crankcase Ventilation (CCV) Kits
      • PTO Pulley Kits
      • PTO Pads & Accessories
      • Remote Oil Filter Kits
      • Oil Drain Line Kits
      • Wolverine Oil Pan Heaters
    • Seaboard Specialty Kits
      • SMX 6BTA 5.9 Seawater Pump Spacer Kit
      • ZF220A & ZF220V Shift Valve Lever Repair Kit
      • Borg Warner Velvet Drive to Cummins 5.9 HD Adapter Kit
      • Cummins Custom Exhaust Flange Kit
      • Fuel Cooler Removal Kit
      • SMX Mechanical Oil Pressure Gauge Kit
    • General Boat Parts
      • Acme Marine Propellers
      • Split Hub Propeller Shaft Couplings
      • Groco Raw Water Strainers
      • Groco Bronze Thru-Hull Valves
      • Cutlass Bearings
      • Fittings & Extras
    • Commercial Marine Equipment
      • Commercial Marine Hydraulic Pumps & Equipment
      • Hydraulic Pumps
      • Wash Down Water Pumps
      • Walter Marine Keel Coolers
      • PTO Pads & Accessories
      • PTO Pulley Kits
    • Services
      • Phone & Email Consultation
      • Marine Diesel Pre-Purchase Consultation
      • Custom Marine Exhaust Design & Fabrication
      • Seawater Component Cleaning & Repair
      • 24V to 12V Engine Conversions
      • Custom Engine Upfitting
        • Custom Power Take Off (PTO) Fabrication
        • Custom Engine & Stringer Brackets
    • Used Parts / Classifieds
  • Marine TransmissionsZF & DMT Transmissions
    • ZF Marine Transmissions
    • ZF Marine Shift & Trolling Valves
    • ZF Marine Transmission Parts
      • All ZF Marine Transmission Parts
      • ZF Marine Solenoid Coils
      • ZF Marine Shift Solenoids
      • Transmission Filters
      • ZF Marine Oil Pumps
      • ZF Input / Output Shaft Seals
      • ZF Transmission Mounting Brackets
    • DMT Marine Transmissions
    • Remote V-Drive Engine PTO Couplings
    • Torsional Couplings
    • Split Hub Shaft Couplings
    • ZF Adapter Housings / Plates
    • Transmission Oil Coolers
    • ZF Marine Manuals
  • Diesel Engine SalesFactory EPA Tier 3 & ReCon
    • EPA Tier 3 Cummins Marine Engines
    • Cummins Marine ReCon Engines
    • Cummins Marine ReCon Long Block Engines
    • Engine Warranty Information
  • Technical InformationCummins Engine Info
    • Cummins Engine Information
      • 4BT / 4BTA 3.9 Specifications
      • 6BT / 6BTA 5.9 Specifications
      • 6CTA 8.3 Specifications
      • QSB 5.9 Specifications
      • QSB 6.7 Specifications
      • QSC 8.3 Specifications
      • QSL 9 Specifications
      • QSM 11 Specifications
      • WET QSM 11 Specifications
    • Cummins Engine Parts Catalogs
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  • Tony’s TipsKnowledge Base
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Product Search

Seaboard Marine stocks a full-line of Cummins Marine Diesel Engines, ZF Marine Transmissions, and Specializes in Parts & Service for Cummins Marine.

Seaboard Marine Featured Products

Cummins Marine SmartCraft to SMX Adapter Harness with SMX SeaView
SmartCraft DieselView to SMX Digital Display Frame
SmartCraft to SMX Digital Display Upgrade Kit
not rated $1,395.00 Select options
SMX Vibration Isolator for Cummins 6B 5.9 Marine Engines
SMX (PURPLE) Specialty Vibration Isolator for Mid-Range Marine Diesel Engines
not rated $165.00 – $650.00 Select options
6BTA 5.9 Marine EnviroVent CCV Kit
EnviroVent CCV Kit 6BTA Series for In-line Drive Engines
not rated $350.00 Select options
SMX Double Double Multi-Stage Fuel Filtration Kit
SMX Double Double Multi-Stage Fuel Filtration Kit
not rated $400 or 2 for $775 Add to cart
Custom Exhaust Flange Kit
Custom Exhaust Flange Kit
Cummins Custom Exhaust Flange Kit
not rated $150.00 Add to cart
6BTA Aftercooler & Heat Exchanger Maintenance Kit
#2 Kit
6BT/6BTA Seawater Side Aftercooler & Heat Exchanger Maintenance Kit
not rated $110.00 – $180.00 Select options
SMX SeaView J1939 Single Digital Display Kit
SMX SeaView J1939 Digital Display Back
SMX SeaView J1939 Single Digital Display Kit
not rated $1,495.00 Select options
SMX QSB Seawater Pump
SMX QSB Seawater Pump
not rated $825.00 Add to cart
SMX 1730 Seawater Pump
SMX 1730 Seawater Pump for 6BTA-M3 / 6CTA / 480CE / QSL9
Rated 5.00 out of 5
 $750.00 Select options

Recent Tony’s Tips Articles

Cummins Marine Exhaust Flange Pyrometer (EGT) Location Engine Life Aftercooler Assembly ZF 280 MB15 Shift Valve Gear Oil Pressure Port Cummins Marine 6BTA 330B or 370B Throttle Cable Bracket 6BTA JWAC - Boost Hose to Aneroid & Measuring Fuel Pressure QSB Seawater pulley configuration - Old & New QSM11 Exhaust Leak at 500 Hours Shift Lever & Prop Shaft Spin Direction LF701 Lube Filter Cummins Engine Stop Kill Wire Cummins QSB 380 in a 27 ft Farallon - 4" dry to 5" mixer. Under 25" H2O at WOT. Aftercooler Discoloration from High Loads or Turbo Boost Early B series belt wrap SMARTCRAFT Vessel Adapter Harness. Ignition circut for QSB, QSC, QSL, QSM. Cut lead and engine will stop Used for shut down systems like the 'Fireboy'. Less than 1 amp Propeller Shaft Strut Mock-up Cummins Marine 450C Throttle Cable Bracket QSB 6.7 Fuel GPH vs BHP QSB WIF Plug Location Magnetic pickup location above the flywheel on the engine bellhousing Diode Isolator Alternator hook-up Cummins QSB 6.7 Fuel Supply and Return Ports Starter, Crank & Fuel Solenoid Wiring Circuit Cummins 330/370 5.9 Manifold Output Removing and Installing the QSM11 Exhaust Manifold The fitting/plug shown is the best place to bleed air from your "Quantum" fuel system. QSB Water in Fuel Sensor Location Blowby Chart for Mid-Range Marine Diesel Engines First Signs of a Coolant Leak on a QSL9 Boost Fitting Locations for 6CTA 450 Diamond Lower Belt Guard Bolts on the B-series Cummins 6CTA 8.3 OEM Thermostat ZF 63 - ZF 85 Electric Shift Valve Drawing Custom Fiberglass Squid Screens & Running Gear Pressure port for switch ZF 220V & 220A Cummins SmartCraft DieselView Display New Turbo vs 27000 hours turbo Modified QSB 5.9 with Fuel Cooler Removed

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What We Do

Seaboard Marine delivers “Guaranteed Better Than Factory” Performance, Parts, Design, and Engineering for Cummins and other Marine Diesel applications. We’ve been serving the local Ventura and Oxnard areas of California since 1980 as a custom boat builder, repower specialist, designer, and supplier of equipment to builders, commercial fishermen, and recreational users. Seaboard also ships Internationally every day to support the Cummins Marine brand across the globe.

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Repower Projects

"Windstone" is owned by David Sharabani of Santa Maria, California. He's an electrical contractor that is trying to find time to go fishing now that he's got a serious fish machine that can run with the best of them! The vessel has the typical " Seaway" look. A little commercial, but still has those lines that appeal to so many. Don't know if you are aware of the Seaway heritage, but just about all of the "Baywatch" boats, here in So. Cal. were made by them...... Widgeon Repower SHOOTER The 4 Year 40 Knot 31 Foot Bertram Odyssey

Featured Articles

  • A "Low Hour" Engine “Marine Age” the REAL age of a Marine Diesel Engine January 10, 2018
  • Propellers Move Boats, Engines Just Turn Them January 8, 2018
  • Cummins QSB 380 in a 27 ft Farallon - 4" dry to 5" mixer. Under 25" H2O at WOT. Everything you Need to Know About Marine Exhaust Systems January 6, 2018
  • Cummins QSB 5.9 Continuous Duty – A Different Perspective January 4, 2018
  • Understanding Low Power Troubleshooting January 2, 2018
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