MerCruiser 2.8 Diesel Engine

The MerCruiser 2.8 Diesel is a compact, efficient, and reliable marine diesel engine designed to deliver strong performance with excellent fuel economy for a wide range of recreational and light commercial boats. Known for its smooth operation and durability, this engine is well suited for boat owners seeking dependable diesel power in a compact package.

Engine Design & Construction

The MerCruiser 2.8 Diesel features a 4-cylinder, 4-stroke inline diesel configuration with direct fuel injection, providing efficient combustion and consistent power output. Its robust engine block and marine-grade components are engineered to withstand harsh marine environments, ensuring long service life and dependable operation.

The compact design allows easy installation in limited engine compartments, making it an ideal choice for repower projects as well as new boat builds.

Performance & Efficiency

Delivering balanced power and strong mid-range torque, the MerCruiser 2.8 Diesel offers smooth acceleration and responsive throttle control. Diesel efficiency translates into lower fuel consumption and longer cruising range compared to gasoline engines of similar output.

The engine is designed for quiet and low-vibration operation, enhancing onboard comfort during cruising and extended operation.

Cooling & Reliability

Equipped with a freshwater cooling system and heat exchanger, the MerCruiser 2.8 Diesel maintains optimal operating temperatures while protecting internal components from corrosion. This cooling setup improves reliability and reduces maintenance demands in both saltwater and freshwater applications.

Marine Integration & Compatibility

The MerCruiser 2.8 Diesel is compatible with MerCruiser sterndrive systems, providing seamless integration with existing propulsion components. Its dependable power delivery makes docking, maneuvering, and cruising smooth and predictable.

Maintenance & Serviceability

Designed with service access in mind, the engine features easily reachable filters and service points, simplifying routine maintenance. Backed by MerCruiser established support network, parts availability and technical service are widely accessible.

Ideal Applications

The MerCruiser 2.8 Diesel Engine is ideal for:

• Cruisers and recreational boats

• Coastal and inland waterway vessels

• Light commercial and utility boats

• Repower and replacement installations

Key Advantages

• Compact and efficient marine diesel design

• Excellent fuel economy and cruising range

• Smooth and low-vibration operation

• Freshwater cooling with heat exchanger

• Compatible with MerCruiser sterndrive systems

• Proven reliability and durability

Technical Specifications

General

• Model: MerCruiser 2.8 Diesel

• Engine Type: 4-stroke, water-cooled marine diesel

• Fuel System: Direct fuel injection

• Aspiration: Naturally aspirated

• Number of Cylinders: 4 inline

Displacement & Combustion

• Displacement: Approx. 2.8 liters

• Bore × Stroke: Approx. 94 mm × 100 mm

• Combustion System: Direct injection diesel

Performance

• Rated Power Output: Approx. 165 HP @ 3,800 RPM

• Maximum Engine Speed: Approx. 3,800 RPM

• Torque Characteristics: Strong mid-range torque for smooth cruising

• Fuel Consumption: Efficient diesel fuel usage (varies by load and drive setup)

Cooling & Lubrication

• Cooling System: Freshwater cooling with heat exchanger

• Lubrication System: Forced lubrication with oil cooler

• Engine Oil Capacity: Approx. 7.0 liters

• Recommended Oil Type: Marine-grade diesel engine oil

Electrical System

• Starting System: 12 V electric start

• Alternator: 12 V marine alternator

Dimensions & Weight

• Overall Dimensions (L × W × H): Approx. 900 × 650 × 750 mm

• Dry Weight: Approx. 400–430 kg (engine only, excluding sterndrive)

Drive & Installation

• Rotation (Crankshaft): Counter-clockwise (viewed from flywheel end)

• Drive Type: Sterndrive

• Compatible Drives: MerCruiser sterndrive systems

• Mounting: Marine-grade flexible engine mounts

Service & Adjustment

• Valve Train: Overhead valve (OHV)

• Firing Order: 1 – 3 – 4 – 2

• Maintenance Access: Designed for easy access to filters, belts, and service components