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      • 6BT 5.9 210/220 Diamond 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
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        • Sherwood G1503 Seawater Pump for Cummins 4BTA
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    • 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
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      • Custom Marine Exhaust Design
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    • Instrumentation & Electrical
      • Digital Display Panels
        • SMX ED-X Digital Display for QSM11 & 480CE
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        • SmartCraft Displays
          • Cummins Mercury SmartCraft SystemView Digital Display
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        • Which Cummins SmartCraft Display Do I Have?
      • Analog Instrument Panels
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        • SMX Marine Boost / Pyro (EGT) Turbocator Gauge Kit
        • SMX Marine Turbo Boost Gauge Kit
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        • VDO Gauges
        • Rudder Angle Indicator Kits
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      • Sending Units & Sensors
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      • Harnesses
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        • Electronic Throttle Controls (ETC)
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      • 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
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        • Custom Power Take Off (PTO) Fabrication
        • Custom Engine & Stringer Brackets
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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
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
SMX 1.25″ Hose Universal Seawater Pump
not rated $495.00 Add to cart
SMX 12V Electric Clutch
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
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 Digital Voltage Monitor Faceplates
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

Steel stringers QSB5.9 vs QSB 6.7 HPCR Fuel System Starting with a "factory" inline muffler shape applicable to the install. Engine Life QSM11 PTO Steering Pump Cummins Marine Exhaust Flange Pyrometer (EGT) Location Cummins Air Heater Fuse Plug Bosch Fuel lever tied up for testing OEM Thermostat Water In Fuel Cummins PCB Board Impeller Maintenance Simple & Effective Isolated Squeeze Bulb Priming System using Clear Vinyl Hose I think the value of this type in installation is 100% obvious to most anybody that has gone through priming a diesel engine in a vessel from both the practical and safety standpoint when you have to get your engine running - In other words, I suggest you just forget about the politics of "squeeze bulbs" that come from ignorant boaters and the typical wharf rat that thrives on "dock talk". QSM11 Low Coolant Sensor Measuring for a custom exhaust riser from drawings / dimensions supplied from owner 2000 miles away. Propeller Shaft Cummins Marine 330B 370B 330-370 Bosch Fuel Lift Pump QSB 5.9 Fuel connections & Parts-Ver 2.0 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 Jog Lever Steering Crankcase Ventilation Cummins 330/370 5.9 Manifold Output Cummins QSB 5.9 6LPA Aneroid & Sensing hose Proper Exhaust Spill over point 28SI Amp vs. Shaft RPM Curve ZF 63 - ZF 85 Electric Shift Valve Drawing Turbocharger First Signs of a Coolant Leak on a QSL9 6BT-6BTA Coolant Drain Location Proper Relay Mounting Bosch P7100 Injection Pump Oil plug Cummins Marine 4B, 4BT, 4BTA Boost Fitting Location Proper Throttle Travel Early Style ZF 280A Marine Transmission Thermostat Fuel Flow 330-370 Diamond

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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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Seaboard Marine Inc.

2947 W 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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