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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
      • 6BTA 5.9 330/370 Diamond Engine Hoses
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      • 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
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      • 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
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      • 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
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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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      • Harnesses
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      • 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
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      • EnviroVent Crankcase Ventilation (CCV) Kits
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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 Power Take Off (PTO) Fabrication
        • Custom Engine & Stringer Brackets
    • Used Parts / Classifieds
  • Marine TransmissionsZF & DMT Transmissions
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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

A Much Better Cummins Marine 6CTA 8.3 Gear Cooler Location New Turbo vs 27000 hours turbo Propping Electronic Engines QSB-Oil-Lines-Style.jpg Yanmar 6LPA Oil Pressure & Boost Port Locations QSB 6.7 Fuel GPH vs BHP Starter, Crank & Fuel Solenoid Wiring Circuit 6BTA JWAC - Boost Hose to Aneroid & Measuring Fuel Pressure Oil cooler with transducers location Here's the source of that annoying screech Impeller Maintenance Cummins Marine 6BTA 330B or 370B Throttle Cable Bracket Cummins Marine 6CTA 450 Diamond with True 2 Micron Filtration Yanmar 6LYA Oil Pressure & Boost Pressure Port Locations Aftercooler orientation for B C series Cummins Cummins Marine Leaking Coolant Sensor Bosch Fuel lever tied up for testing Cummins Marine 450C Throttle Cable Bracket Oil Pressure Port Locations for Cummins 6CTA 8.3 ZF MARINE TRANSMISSION DIPSTICK QSB 24SI Alternator Starter & Mag Switch Wiring On-Engine Fuse / Reset Button Blowby Chart for Mid-Range Marine Diesel Engines Early Style ZF 280A Marine Transmission Arcusaflex - ASK Cardan Shaft Coupling 6CTA 8.3 430/450C Fuel cooler Removal Boost Fitting Locations for 6CTA 450 Diamond Cummins Mechanical Engine Gear Pressure Sender Wires Plunger in the UP position is Manual Engaged Cummins QSB 6.7 Cummins (WET) QSM 11 Propeller Disc Area Ratio (DAR) QSB 5.9 Fuel connections & Parts-Ver 2.0 Lower Belt Guard Bolts on the B-series Magnetic pickup location above the flywheel on the engine bellhousing Flywheel Housing Plug Picturred above is the backing plate of your heat exchanger Starter, Crank & Fuel Solenoid Wiring ZF 63 - ZF 85 Electric Shift Valve Drawing Mercury SmartCraft Logo First Signs of a Coolant Leak on a QSL9 What causes white smoke?

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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 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

  • Heater Hookup Ports for Your Marine QSB 5.9 Cummins November 15, 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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