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        • SMX QSB Seawater Pump
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      • Cummins Custom Exhaust Flange Kit
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      • SMX Exhaust Turbo Flange for Yanmar 6LPA
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        • SMX ED-X Digital Display for QSM11 & 480CE
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        • SmartCraft Displays
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      • Analog Instrument Panels
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    • Engine Upgrades & Add-Ons
      • 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
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      • 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

Cummins Marine Leaking Coolant Sensor Bosch P7100 Injection Pump Oil plug Engine Life 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 Cummins Marine QSM11 Dry to Wet Conversion QSB5.9 vs QSB 6.7 HPCR Fuel System Magnetic pickup location above the flywheel on the engine bellhousing Modified QSB 5.9 with Fuel Cooler Removed QSB HPCR Fuel Rail Sensor 480CE vs 450 Diamond Fuel Curves Oil Capacities and Dip-Stick Readings on Popular ZF Transmissions QSM11 alternative oil Pressure test port .070" clearance between the edge and that bolt-hole? Use the thinner O-ring Typical Properly Designed Marine Port & Starboard Exhaust Risers B-Series 3-Bolt Starter Motor Impeller Maintenance QSB Water in Fuel Sensor Location On-Engine Fuse / Reset Button 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 Simple Grid Heater Control Cummins Marine Fuel Components QSC & QSL Cummins Marine 6CTA 450 Diamond with True 2 Micron Filtration A ZF220A with rotary valve QSB WIF Plug Location Cummins Marine Three-Way Fuel & Oil Combo Block Manifold Custom Dry Exhaust Wraps Jog Lever Steering Cummins 6CTA 8.3 Here's the source of that annoying screech Cummins Marine 330B 370B Diamond Gear Cooler upgrade ZF Troll valve Safety Switch & Control Lever Hynautic Cylinder Chart Measuring for a custom exhaust riser from drawings / dimensions supplied from owner 2000 miles away. Spicer Flange Yoke Aftercooler Condensation Drain Port Please note Belt-Tensioner may be constructed of either steel, or 'Black Plastic"

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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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