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  • Products & ServicesParts & Components
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      • Complete Seawater Circuit Maintenance Kits
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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
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        • SMX QSB Seawater Pump
        • Sherwood G2603 Seawater Pump for Cummins QSC 8.3
        • Sherwood G2903 Seawater Pump for Cummins QSM11
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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
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      • Custom Marine Exhaust Design
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      • Digital Display Panels
        • 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
        • Rudder Angle Indicator Kits
        • SMX Mechanical Oil Pressure Gauge Kit
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      • Sending Units & Sensors
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      • Switches & Electrical Parts
      • 24V to 12V Engine Conversions
    • Engine Upgrades & Add-Ons
      • EnviroVent Crankcase Ventilation (CCV) Kits
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      • 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 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

Boost Fitting Locations for 6CTA 450 Diamond DIS 100-600 HP PTO to REMOTE IV4) Mercury SmartCraft Logo Another custom fiberglass muffler QSC & QSL9 Pressure test 100psi Aftercooler Slime QSB 5.9 Fuel Inlet Manifold Ports Thermostat Cummins 480CE Typical Turbo Banjo Fitting Leak Cummins Marine 330B 370B Diamond Gear Cooler upgrade .070" clearance between the edge and that bolt-hole? Use the thinner O-ring OEM and SMX 160F Thermostat Cummins Air Heater Fuse Plug 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 Proper Throttle Travel How to Torque a C-Series Cylinder Head Starboard Exhaust for a 670 QSM - 4" Dry Riser to 6" wet mixer Cummins Position Sensor Mercury SmartCraft Logo Cummins Marine 6CTA 450 Diamond with True 2 Micron Filtration Propping Electronic Engines Engine Life A ZF220A with rotary valve Cummins Marine 450C Throttle Cable Bracket Racor Fuel Filter Bosch K1 Alternator Magnetic pickup location above the flywheel on the engine bellhousing Proper Exhaust Spill over point ZF 280 PTO ROTATION Heat Exchanger in Need of Service ZF MARINE TRANSMISSION DIPSTICK Aftercooler orientation for B C series Cummins Custom Dry Exhaust Wraps Propeller Shaft Strut Mock-up Cummins QSB 6.7 Fuel Supply and Return Ports Cummins Marine 330B 370B 330-370 Bosch Fuel Lift Pump Cummins Marine Fuel Shutoff Solenoid Wiring 101

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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

  • QSB 6.7 Turbo Overhang to RFFH QSB 6.7 Turbo Overhang to RFFH & QSB 6.7 Turbo Arrangements September 24, 2018
  • 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
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