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    • General Boat Parts
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      • Centa CF-R High Inertia Torsional Coupling for ZF 63A/IV 80A/IV 85A/IV
      • Heavy Duty Suredrive™ Coupling for Borg Warner & ZF 25 thru 220 Transmissions
      • Vulkan Torflex Coupling for Yanmar 4LH/6LP
      • Vulkan Torflex Coupling ZF 220 (A / IV) Series Kit
      • Centa CF/DS 30 Torsional Coupling ZF 220A/V
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      • Marine Torsional Flex Plate (Velvet Drive, SAE 11.5)
      • Vulkan Vulkardan-E Coupling (2K4011S036)
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      • Vulkan Vulkardan-E Coupling (2K3411S004)
    • ZF Adapter Housings / Plates
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      • ZF Transmission Adapter Plate SAE#3 for ZF 220A
      • ZF Transmission Adapter Plate SAE#3 for ZF 280A/IV
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      • Transmission Adapter Plate to Bellhousing Bolt Hardware Kit
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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

Cummins Marine SmartCraft to SMX Adapter Harness with SMX SeaView
SmartCraft DieselView to SMX Digital Display Frame
SmartCraft to SMX Digital Display Upgrade Kit
not rated Single engine $1395 or Twin Engine for $2595 Select options
SMX Vibration Isolator for Cummins 6B 5.9 Marine Engines
SMX (PURPLE) Specialty Vibration Isolator for Mid-Range Marine Diesel Engines
not rated $165.00 – $650.00 Select options
6BTA 5.9 Marine EnviroVent CCV Kit
EnviroVent CCV Kit 6BTA Series for In-line Drive Engines
not rated $350.00 Select options
SMX Double Double Multi-Stage Fuel Filtration Kit
SMX Double Double Multi-Stage Fuel Filtration Kit
not rated $400 or 2 for $775 Add to cart
Custom Exhaust Flange Kit
Custom Exhaust Flange Kit
Cummins Custom Exhaust Flange Kit
not rated $150.00 Add to cart
6BTA Aftercooler & Heat Exchanger Maintenance Kit
#2 Kit
6BT/6BTA Seawater Side Aftercooler & Heat Exchanger Maintenance Kit
not rated $110.00 – $180.00 Select options
SMX SeaView J1939 Single Digital Display Kit
SMX SeaView J1939 Digital Display Back
SMX SeaView J1939 Single Digital Display Kit
not rated $1,495.00 Add to cart
SMX QSB Seawater Pump
SMX QSB Seawater Pump
not rated $825.00 Add to cart
SMX 1730 Seawater Pump
SMX 1730 Seawater Pump for 6BTA-M3 / 6CTA / 480CE / QSL9
Rated 5.00 out of 5
 $750.00 Select options

Recent Tony’s Tips Articles

Basic Alarm Wiring Example QSM11 Dry Manifold New style Belt Wrap on early 4BT/6BT Cummins Failed Vulkan VL Coupling Removing and Installing the QSM11 Exhaust Manifold Starter, Crank & Fuel Solenoid Wiring Aftercooler Discoloration from High Loads or Turbo Boost Early Style VIP Box Thermostat Inlet/bleed screw location Cummins 4BT Turbo at 33000+ hours — from a 47Kw Custom SMX generator Cummins Marine 6BT Fuel Shutoff Solenoid Location Cummins Marine 6BTA 330B or 370B Throttle Cable Bracket Cummins QSL 9 QSM11 Wet Exhaust Riser Test Port Location (EGT, Pyro) Fuel Flow 330-370 Diamond Cummins Marine Engine Oil Pressure Specifications Cummins Marine Fuel Components QSC & QSL Cummins CPL 970 & Welded Aftercooler Designs SmartCraft DieselView & VesselView Digital Display Dimensions Flywheel Housing Plug QSC & QSL9 Main Fuel Return 6CTA 8.3 Coolant Temperature Sender Location QSB 6.7 Turbo Overhang to RFFH QSB Position Sensor Cummins 330/370 5.9 Manifold Output High Coolant Temperature Alarm 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 330B 370B Diamond Fuel Maze Diagram Seawater Pump Ports Cummins Fuel Shutoff Solenoid Wiring First Signs of a Coolant Leak on a QSL9 QSL9 or 450 Diamond with the fuel cooler removed Cummins Cylinder Numbering Cummins QSB 6.7 Fuel Supply and Return Ports What causes white smoke? Oil Pressure Port Locations for Cummins 6CTA 8.3 Spicer Flange Yoke QSL or C 8.3-4-groove PTO drive 6LPA Aneroid & Sensing hose Simple Grid Heater Control QSB HPCR Fuel Rail Sensor Pressure port for switch ZF 220V & 220A Cummins SmartCraft DieselView Display Yanmar 6LYA Oil Pressure & Boost Pressure Port Locations The Story of Cummins & Mercury SmartCraft Shaft Angle in Relation to the Hatch & Deck

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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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