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SDEC D683 (6CTA8.3-M220) Marine Diesel Engine (250-360 HP)

Product images are illustrative marketing renders created to showcase the engine and its selling points; actual product appearance may vary.

SDEC D683 (6CTA8.3-M220) Marine Diesel Engine (250-360 HP)

The SDEC D683 is a heavy-duty inline 6-cylinder, turbocharged and inter-cooled marine diesel engine built for inboard propulsion of tugboats, working boats, and vessels.With a rugged wet-cylinder-liner design and sea-water pump plus heat-exchanger cooling, it delivers strong, dependable power for demanding marine duty.

Model
D683 (6CTA8.3-M220)
Engine type
Inline 6-cylinder, 4-stroke, turbocharged & inter-cooled marine diesel
Rated power / speed
250-360 HP @ 2200 rpm
Displacement
8.3 L
Bore × Stroke
114 × 135 mm
Cooling system
Sea-water pump & heat exchanger, wet cylinder liner
Request a Quote WhatsApp
  • Test report & video
  • Export wooden-box packing
  • FOB / CIF Shanghai
  • 12 months or 1500 hours warranty

Overview

The SDEC D683 is a heavy-duty inline 6-cylinder, turbocharged and inter-cooled marine diesel engine built for inboard propulsion of tugboats, working boats, and vessels. With a rugged wet-cylinder-liner design and sea-water pump plus heat-exchanger cooling, it delivers strong, dependable power for demanding marine duty.

Key selling points

  • Strong 250-360 HP @ 2200 rpm output for demanding marine propulsion
  • Turbocharged & inter-cooled for higher power density and efficiency
  • Sea-water pump & heat-exchanger cooling for continuous marine operation
  • Durable inline-6 wet-cylinder-liner design engineered for life at sea

Technical specifications

SDEC D683 (6CTA8.3-M220) Marine Diesel Engine (250-360 HP) technical specifications
ModelD683 (6CTA8.3-M220)
Engine typeInline 6-cylinder, 4-stroke, turbocharged & inter-cooled marine diesel
Rated power / speed250-360 HP @ 2200 rpm
Displacement8.3 L
Bore × Stroke114 × 135 mm
Cooling systemSea-water pump & heat exchanger, wet cylinder liner
Engine positionInboard
Dimensions (L×W×H)1404.9 × 837 × 1178.7 mm
ApplicationTugboat, working boat, vessel
Warranty12 months or 1500 hours
MOQ1

Features & highlights

The D683 combines a rugged inline-6 wet-liner block with a turbocharger and inter-cooler for cooler, denser intake air and stronger combustion. Marine cooling is handled by a sea-water pump and top-mounted heat exchanger for stable operating temperatures during continuous duty, while a corrosion-resistant, marine-ready build stands up to the harsh sea environment. The side injection pump, high-pressure fuel lines, and durable belt-driven accessory drive ensure smooth, reliable power at sea.

Typical applications

Inboard propulsion for tugboats, working boats, and vessels in demanding marine service.

See it in use: Fishing Trawler Repower with 320 HP Marine Diesel and Reduction Gearbox.

Customization options

Available with marine transmission/gearbox options to suit specific vessel requirements. Please contact us with your application details.

Ordering information

  • MOQ: 1 unit
  • Warranty: 12 months or 1500 hours
  • Genuine SDEC; lead time and packaging details available on request

Frequently asked questions

What is the SDEC D683 used for?

Inboard propulsion for tugboats, working boats, and vessels in demanding marine service.

What warranty comes with the SDEC D683?

The SDEC D683 is supplied with a 12 months or 1500 hours warranty. The exact warranty terms are confirmed on your quotation.

What is the minimum order quantity?

The minimum order quantity for the SDEC D683 is 1. Mixed orders with other MARS products are welcome.

Can the SDEC D683 be customized?

Available with marine transmission/gearbox options to suit specific vessel requirements.Please contact us with your application details.

How is it inspected, packed and shipped?

Each unit is checked against your order before dispatch, with a written outgoing-inspection report and video (machinery is run-tested). Goods are packed in export wooden-box or crate packing and shipped FOB or CIF from Shanghai; stock items ship promptly and built-to-order items typically within about 20 working days.

How do I get a price for the SDEC D683?

Send an inquiry with the required configuration, quantity and destination port using the form on this page, email inquiry@marine-equipment-supply.com or WhatsApp +86 176 2154 1688. We reply with a matched recommendation and quotation within 24 hours on working days.

Get a quotation for the SDEC D683

Tell us the configuration, quantity and destination port. We reply within 24 hours on working days.

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SDEC D683 (6CTA8.3-M220) Marine Diesel Engine (250-360 HP)