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Westerbeke 12D TWO Marine Diesel Engines
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Westerbeke 12C TWO Marine Diesel Engine

12 HP

Two cylinder, four cycle smoothness in a lightweight, compact engine
Our newest most compact marine diesel engine:

   The Westerbeke 12D Two engine has an extremely small envelope (combined length, width, height). This lightweight low profile engine is designed to fit into the smallest of engine compartments. The 12D Two is engineered by Westerbeke, pioneers in marine diesel engines, to provide consistent performance, quietness, durability and above all reliability, year after year.

   The engine is easy to install, economical to operate, and convenient to service. A full range of options is available allowing you to custom tailor your engine to fit your individual requirements.

Westerbeke 12C Two Marine Diesel Engine
12D Two - Overview & Specifications

Cylinders: 2
Bore: 2.99 in.
Stroke: 2.76 in.
Displacement: 38.75 cu. in.

Aspiration: Natural

Length: 24.50 in.
Width: 20.00 in.
Height: 20.30 in.
Weight: 225.00 lbs.


Standard Equipment

  • Fresh water cooling

  • Engine prewired to plug-in connector

  • Self-bleeding fuel system

  • 12 volt 50 ampere alternator

  • Flow control domestic hot water connections

  • Coolant recovery tank

  • Throttle, stop, and shift control brackets

  • Low oil pressure and high water temperature alarms

  • Gear-driven sea water pump

  • Mechanical marine gear with 2.05:1 reduction

  • Glow plug cold starting aid

  • Four point adjustable flex mounts

  • Lube oil drain hose

  • Tuned air intake silencer

  • Operator’s Manual and Parts List

  • "CE" Mark

Optional Equipment

  • Admiral panel with alarms (tachometer with gauges)

  • Dual station senders

  • Other gear ratios - Contact us for more info.

  • Remote expansion tank

  • Fuel/water separator

  • Coolant recovery tank

  • Muffler and fittings

  • "A" on board spare parts kit

  • "B" extended cruising spare parts kit

  • Anti-siphon valve for overboard cooling discharge water

  • Technical Manual

  • Exhaust connection (water injected 90° , 45° elbows & riser)

  • Lube oil drain hose

  • Propeller shaft couplings (rigid/flexible) - available standard sizes

Adobe Acrobat Reader is required to view the  files below.

Westerbeke 12D Two Specification Sheets

Westerbeke 12D Two Installation Drawings

Please be sure to visit our Used & Surplus page for great prices on Westerbeke Marine Diesel Engines.

Email your inquires regarding Westerbeke 12D Two Marine Diesel Engines to tadinc@earthlink.net

or... Please call us at 1-800-927-9295 for more information.


This Page Last Updated June 01, 2020

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