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  • Products & ServicesParts & Components
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        • Sherwood G2603 Seawater Pump for Cummins QSC 8.3
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      • Cummins Custom Exhaust Flange Kit
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      • 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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        • SMX ED-X Digital Display for QSM11 & 480CE
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          • SMX SeaView J1939 Single Digital Display Kit
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        • SmartCraft Displays
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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
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      • Sending Units & Sensors
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      • 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
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      • PTO Pads & Accessories
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      • 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
      • Split Hub Propeller Shaft Couplings
      • Cutlass Bearings
      • Fittings & Extras
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      • Custom Marine Exhaust Design
      • Seawater Component Cleaning & Repair
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        • Custom Power Take Off (PTO) Fabrication
        • Custom Engine & Stringer Brackets
    • Used Parts / Classifieds
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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 $65.00 $52.00 Add to cart
Cummins Marine Turbo to Exhaust Manifold Stud & Nut Kit
Cummins Marine Turbo to Exhaust Manifold Stud & Nut Kit
not rated $45.00 $36.00 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

Starting with a "factory" inline muffler shape applicable to the install. Modified QSB 5.9 with Fuel Cooler Removed Lower Belt Guard Bolts on the B-series Nippon Denso EP9 Idle - Bumper Spring Adjustment 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 Aftercooler Slime Oil Capacities and Dip-Stick Readings on Popular ZF Transmissions Cummins SmartCraft DieselView Display Oil cooler with transducers location Cummins Position Sensor Sleeved Diesel Engine QSM11 PTO Steering Pump Flywheel Housing Plug Cummins QSC 8.3 The Story of Cummins & Mercury SmartCraft ZF 220A Rotary Troll Valve assembly (08) Rectorseal and Tape = Zero Ohms QSB HPCR Fuel Rail Sensor Mercury SmartCraft Logo 6CTA 8.3 430/450C Fuel cooler Removal QSB 6.7 CM2250 Processor ECM Hynautic Cylinder Chart SmartCraft DieselView & VesselView Digital Display Dimensions Please note Belt-Tensioner may be constructed of either steel, or 'Black Plastic" Bosch P7100 Injection Pump High Throttle Stop Cummins QSB 6.7 6BT-6BTA Coolant Drain Location Seawater Pump Ports Magnetic pickup location above the flywheel on the engine bellhousing Blowby Chart for Mid-Range Marine Diesel Engines QSB Oil Pressure Test Port QSL9 or 450 Diamond with the fuel cooler removed 100% Genuine Cummins complete Aftercooler for Cummins B Series Engine How to Torque a C-Series Cylinder Head QSB 6.7 Turbo Overhang to RFFH Cummins Marine Heater Grid Assembly Wiring Diagram Cummins Marine High Mount Turbo Option Typical ZF Oil Screen Impeller Maintenance Cummins 450 Diamond 6CTA 8.3 450 Diamond Thermostat Housing Cummins Mechanical Engine Gear Pressure Sender Wires

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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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