Westerbeke W10-2 Marine Diesel Engine

The Westerbeke W10-2 is a compact and dependable marine diesel engine designed primarily for auxiliary propulsion in small sailboats and light-duty marine applications. Known for its durability, simplicity, and fuel efficiency, the W10-2 is a trusted solution for boat owners who require reliable onboard power in a small, space-saving package.

Compact & Efficient Design

The Westerbeke W10-2 features a 2-cylinder, 4-stroke diesel configuration engineered for smooth and economical operation. Its compact dimensions make it ideal for installations in tight engine compartments, particularly in smaller sailing yachts where space and weight are critical factors.

The heavy-duty cast-iron block construction ensures structural strength and long-term reliability, even under continuous marine operating conditions.

Reliable Performance

Delivering approximately 10 HP, the W10-2 provides steady auxiliary propulsion for sailboats and small displacement vessels. Its strong low-end torque ensures confident maneuvering in marinas and dependable cruising performance.

The engine is designed for consistent output and long service intervals, making it suitable for recreational boaters seeking dependable auxiliary power.

Fuel Efficiency & Operation

Equipped with a mechanical fuel injection system, the Westerbeke W10-2 offers excellent fuel economy and straightforward maintenance. The simple mechanical design enhances reliability while keeping operating costs low.

Low vibration levels and smooth operation improve onboard comfort, especially during extended cruising.

Marine Cooling & Durability

The engine utilizes a freshwater cooling system with heat exchanger, protecting internal components from corrosion caused by saltwater exposure. This marine-specific design extends engine life and ensures dependable performance in both saltwater and freshwater environments.

Ease of Maintenance

The Westerbeke W10-2 is designed with accessible service points for routine maintenance. Its mechanical simplicity allows for easier troubleshooting and long-term serviceability, supported by Westerbeke established marine parts availability.

Ideal Applications

The Westerbeke W10-2 Marine Diesel Engine is well suited for:

• Small sailing yachts

• Auxiliary propulsion systems

• Day cruisers

• Compact displacement boats

Key Advantages

• Compact and lightweight marine diesel engine

• Approx. 10 HP reliable output

• Fuel-efficient mechanical injection system

• Freshwater cooling with heat exchanger

• Durable cast-iron construction

• Ideal for sailboat auxiliary propulsion

Technical Specifications

General

• Model: Westerbeke W10-2

• Engine Type: 4-stroke marine diesel engine

• Aspiration: Naturally aspirated

• Fuel System: Mechanical direct injection

• Number of Cylinders: 2 inline

Displacement & Combustion

• Displacement: Approx. 0.48 liters

• Bore × Stroke: Approx. 72 mm × 60 mm

• Compression Ratio: Approx. 23 : 1

• Combustion System: Direct injection diesel

Performance

• Rated Power Output: Approx. 10 HP @ 3,600 RPM

• Maximum Torque: Approx. 22–24 Nm @ 2,400 RPM

• Rated Engine Speed: 3,600 RPM

• Duty Rating: Marine auxiliary / light propulsion

Cooling & Lubrication

• Cooling System: Freshwater cooling with heat exchanger

• Lubrication System: Forced lubrication system

• Engine Oil Capacity: Approx. 1.8–2.0 liters

Electrical System

• Starting System: Electric start

• Electrical Output: 12 V

• Alternator: 35 A marine alternator

Dimensions & Weight

• Dry Weight: Approx. 85–95 kg

• Overall Dimensions (L × W × H): Approx. 520 × 420 × 500 mm

Air & Exhaust

• Air Intake: Naturally aspirated

• Exhaust System: Marine wet exhaust compatible

Fuel Consumption

• Fuel Consumption: Approx. 0.8–1.2 liters/hour (depending on load)

Installation & Drive

• Rotation: Standard marine rotation

• Drive Type: Inboard marine propulsion

• Transmission Compatibility: Mechanical marine gearbox

• Mounting: Flexible marine engine mounts