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  • Products & ServicesParts & Components
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      • Complete Seawater Circuit Maintenance Kits
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    • Engine Hoses
      • 6BT 5.9 210/220 Diamond Engine Hoses
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      • QSB 5.9 Engine Hoses
      • QSB 6.7 Engine Hoses
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        • 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 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
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      • BARRY Mounts / Vibration Isolators
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        • Kobelt Marine Throttle & Shift Controls
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        • Shift & Throttle Control Parts
      • Turbochargers & Parts
      • PTO Pulley Kits
      • Belt Tensioners
      • Idler Pulley Kits
      • Bosch Fuel Injection Pump Parts
      • Injectors
      • Air Heater Assemblies
    • Exhaust Systems
      • 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
    • Fuel Systems & Filters
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        • Fuel Filters
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      • Lift / Priming Pumps
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      • Vacuum Gauges
      • Squeeze Bulb Priming Kit
    • Steering Systems
      • Steering Cylinder Rams
      • Helm Pumps
      • Auto Pilot Pumps
      • Rudder Angle Indicators
    • Instrumentation & Electrical
      • Digital Display Panels
        • 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 Mercury SmartCraft SystemView Digital Display
          • Cummins SmartCraft VesselView 403 Upgrade Kit
          • Cummins SmartCraft VesselView 7 Upgrade Kit
        • Cummins DieselView Display Upgrade Options
        • Which Cummins SmartCraft Display Do I Have?
      • Analog Instrument Panels
      • 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 Marine Self-Powered DC Voltage Monitor
      • Sending Units & Sensors
      • Alarm Systems & Switches
      • SMX Digital Voltage Monitor
      • Harnesses
      • SmartCraft Components
      • Shift & Throttle Control Systems
        • Electronic Throttle Controls (ETC)
        • Glendinning Control Systems
      • Switches & Electrical Parts
      • 24V to 12V Engine Conversions
    • 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
    • Seaboard T-Shirts & Extras
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        • Blue Diamond Performance Series Engine Sticker
        • Diamond Performance Series Engine Decal
      • Outer Banks Seaboard Marine T-Shirt
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      • Cummins Chrome Emblem
      • Cummins Mercruiser Chrome Emblem
    • Commercial Marine Equipment
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      • Wash Down Water Pumps
      • Walter Marine Keel Coolers
    • Services
      • Phone & Email Consultation
      • Marine Diesel Pre-Purchase Consultation
      • Custom Marine Exhaust Design
      • 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
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        • Request ZF Shift Valves
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  • Technical InformationCummins Engine Info
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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

SMX 1 7/8" Hose Universal Seawater Pump
SMX 1 7/8" Hose Universal Seawater Pump

New
SMX 1 7/8″ Hose Universal Seawater Pump
not rated $595.00 Add to cart
SMX 1.5" 003 Seawater Pump
SMX 1.5" 003 Seawater Pump

New
SMX 1.25″ Hose Universal Seawater Pump
not rated $495.00 Add to cart
SMX 12V Electric Clutch

New
SMX 12V Electric Clutch
not rated $345.00 Add to cart
SMX 1.5 Universal Wash Down Water Pump
SMX 1.5 Universal Wash Down Water Pump

New
SMX 1.5″ Universal Wash Down Water Pump
not rated $395.00 Add to cart
Cummins QSM11 Marine Turbo to Exhaust Manifold Stud & Nut Kit
Cummins QSM11 Marine Turbo to Exhaust Manifold Stud & Nut Kit
not rated $55.00 Add to cart
Cummins Marine Turbo to Exhaust Manifold Stud & Nut Kit
Cummins Marine Turbo to Exhaust Manifold Stud & Nut Kit
not rated $35.00 Add to cart
Cummins QSM11 Exhaust Flange
Cummins QSM11 Exhaust Flange
Cummins QSM11 Custom Exhaust Flange Kit
not rated $225.00 Add to cart
Cummins Marine Powered by QSC 8.3 Decal
Cummins Marine QSC 8.3 Engine Sticker
not rated $8.00 Add to cart
Cummins Marine Powered by QSB 5.9 Decal
Cummins Marine QSB 5.9 Engine Sticker
not rated $8.00 Add to cart
Cummmins 330B Diamond Performance Series Decal
Cummins 330B/370B/450C Diamond Performance Series Engine Decal
not rated $8.00 Select options
SMX Digital Voltage Monitor
SMX DVM Label Panels
SMX Digital Voltage Monitor
not rated $19.00 Add to cart
Cummins Marine Diamond Performance Series Engine Sticker
Cummins Marine Diamond Performance Series Engine Sticker
not rated $12.00 Add to cart

Recent Tony’s Tips Articles

Picturred above is the backing plate of your heat exchanger Starboard Exhaust for a 670 QSM - 4" Dry Riser to 6" wet mixer Cummins Mechanical Engine Gear Pressure Sender Wires Early B series belt wrap A Clogged aftercooler does this Aftercooler Discoloration from High Loads or Turbo Boost A ZF220A with rotary valve QSM11 alternative oil Pressure test port How to Torque a C-Series Cylinder Head Arcusaflex - ASK Cardan Shaft Coupling Fuel and Horsepower Lift Muffler Styles Cummins QSC 8.3 Plunger in the UP position is Manual Engaged Cummins Marine High Mount Turbo Option Propeller Shaft Mercury SmartCraft Logo Gear Cooler Dimensions ZF MARINE TRANSMISSION DIPSTICK QSM11 Wet Exhaust Riser Test Port Location (EGT, Pyro) Starter, Crank & Fuel Solenoid Wiring Circuit Starter, Crank & Fuel Solenoid Wiring Fuel Flow 330-370 Diamond 480CE vs 450 Diamond Fuel Curves Custom manifold is gravity fed with 1.25" ID hose from the forward main fuel tank 30 feet forward of the engines. This manifold feeds 2 x QSM 630's and 2 x 20Kw gensets with #10 hose for the main and #8 hose for the generators Propeller Disc Area Ratio (DAR) Custom Fiberglass Squid Screens & Running Gear Oil Pressure Port Locations for Cummins 6CTA 8.3 Cummins Marine Fuel Components QSC & QSL Propping Electronic Engines Aftercooler orientation for B C series Cummins Shift Lever & Prop Shaft Spin Direction QSB 24SI Alternator QSC & QSL9 Pressure test 100psi Cummins QSB 6.7 Typical Marine DC Power Distribution Example Cummins SmartCraft DieselView Display Turbocharger QSC & QSL9 Main Fuel Return

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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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2947 WEST 5th Street Oxnard CA 93030

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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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