Description

New Westerbeke 3.5 MCGA 3.5 kW 60 Hz Low-CO Marine Gasoline Generator For Sale

Compact Marine Power for Small Yachts and Recreational Boats

The New Westerbeke 3.5 MCGA 3.5 kW 60 Hz Low-CO Marine Gasoline Generator is a compact, electronically governed marine gasoline generator developed to provide dependable onboard electricity for smaller motor yachts, express cruisers, sport-fishing boats, cabin boats, and other gasoline-powered recreational vessels.

Designed for compatible 60 Hz marine electrical systems, the Westerbeke 3.5 MCGA produces 3.5 kW of single-phase electrical power at 120V. Its two-cylinder gasoline engine operates at an electronically controlled 2500 RPM, while multiport electronic fuel injection, a water-cooled returnless fuel system, freshwater cooling, automatic safety shutdowns, and one-touch controls support reliable onboard operation.

The standard 60 Hz configuration provides approximately 29 amps at 120V with a power factor of 1.0. Its output may support a compatible marine air-conditioning unit, water heater, battery charger, refrigerator, lighting, entertainment systems, electrical outlets, and other moderate onboard loads, subject to a proper electrical-load assessment.

Westerbeke designed the 3.5 MCGA 3.5 for boat owners who need additional onboard power without installing a substantially larger or heavier generator. The complete unit measures approximately 27.1 inches long, 15.8 inches wide, and 15 inches high, with a published dry weight of 226 lb. or 102 kg.

Customers looking for the Westerbeke 3.5 MCGA for sale should confirm the generator’s condition, serial number, manufacturing date, warranty eligibility, included accessories, and electrical configuration before ordering.

Important Production and Availability Information

The original Westerbeke 3.5 MCGA Multiport EFI generator is no longer in production. Westerbeke continues to provide technical documents, updated operating manuals, troubleshooting information, wiring diagrams, installation drawings, and replacement-parts support for the model.

A generator advertised as new may therefore be unused dealer inventory, warehouse stock, or a surplus marine generator rather than a recently manufactured unit. 3.5 MCGA 3.5

Before purchasing, customers should confirm:

• Generator serial number
• Manufacturing date
• New, unused, rebuilt, or used condition
• Storage history
• Warranty status
• 60 Hz electrical configuration
• Control-panel configuration
• Included installation accessories
• Parts and service availability
• Packing dimensions and shipping weight

The current Westerbeke product range also includes the newer 3.5 MCGB Multiport EFI platform, but compatibility between MCGA and MCGB components should never be assumed without checking the model and serial number.

Purpose-Built Westerbeke Marine Generator Engineering

The Westerbeke 3.5 MCGA 3.5 generator was developed specifically for onboard marine power generation. Unlike portable household generators, it incorporates marine cooling, water-injected exhaust compatibility, ignition protection, electronic fuel management, vibration isolation, automatic shutdown protection, and vessel-compatible controls.

The generator is engineered for operating conditions that may include:

• Continuous vessel vibration
• High machinery-space humidity
• Salt-laden marine air
• Restricted installation space
• Changing electrical loads
• Elevated compartment temperatures
• Extended operation away from shore power
• Vessel movement and inclination

The 3.5 MCGA 3.5 meets applicable U.S. Coast Guard 33 CFR 183 requirements and was designed to meet CARB and U.S. EPA emissions requirements. Westerbeke’s published specification also identifies the model as CE certified.

Customers comparing the Westerbeke 3.5 MCGA 3.5 price should consider more than its 3.5 kW rating. Compact dimensions, low weight, multiport fuel injection, electronic governing, reduced-CO engineering, freshwater cooling, marine safety systems, diagnostic capability, and long-term parts support all contribute to the generator’s value.

Smooth Two-Cylinder Gasoline Engine Performance

The Westerbeke 3.5 MCGA 3.5 uses a naturally aspirated, two-cylinder, four-cycle gasoline engine with a horizontal inline arrangement.

Its published engine characteristics include:

• Two cylinders in a horizontal inline configuration
• Four-cycle gasoline operation
• Naturally aspirated air intake
• Approximately 20.3 cubic inches or 0.333 litres of displacement
• 2.40-inch bore
• 2.24-inch stroke
• 10.2:1 compression ratio
• Semi-spherical combustion chambers
• Electronic governing
• 2500 RPM rated engine speed
• Approximately 6 horsepower at 2500 RPM
• Aluminium cylinder block and cylinder head
• Forged crankshaft supported by two main bearings
• Overhead valves

These figures are published in Westerbeke’s official advanced specifications and current model-specific operator’s manual.

The two-cylinder engine, precise electronic throttle control, and specially designed flywheel are intended to provide smoother operation than many compact single-cylinder generator platforms. Westerbeke also highlights the unit’s 2500 RPM engine speed as lower than the 3000 or 3600 RPM speeds commonly associated with many compact gasoline generators.

Potential benefits include:

• Smooth two-cylinder operation
• Reduced vibration
• Lower mechanical operating frequency
• Compact installation dimensions
• Lower overall generator weight
• Improved onboard comfort
• Dependable power for moderate electrical loads

The generator is rated for a maximum operating inclination of approximately 20 degrees in all directions, although the installation must still provide adequate lubrication, cooling-water flow, fuel supply, and exhaust drainage.

3.5 MCGA 3.5 kW Single-Phase Electrical Output

The standard Westerbeke 3.5 MCGA 3.5-612 configuration provides the following electrical ratings:

Electrical Specification	Rating
Rated Electrical Output	3.5 kW
Voltage	120V
Frequency	60 Hz
Electrical Configuration	Single Phase
Number of Wires	Two
Power Factor	1.0
Rated Current	29 Amps
Engine Operating Speed	2500 RPM
Starting Method	Remote Electric Start
Alternator Type	Brushless, Two Pole

Westerbeke also produced a separate 50 Hz version rated at 3.5 kW, 230V, 15 amps, and 2500 RPM. The official specification notes that the 50 Hz and 60 Hz versions are not field-convertible between frequencies.

The vessel’s continuous electrical demand should remain within the generator’s rated capacity while preserving sufficient reserve for temporary startup loads.

Electrical systems that may require additional starting current include:

• Marine air-conditioning compressors
• Refrigerators
• Water heaters
• Freshwater pumps
• Battery chargers
• Small water makers
• Ventilation fans
• Compact galley appliances

An undersized generator may experience:

• Voltage reduction
• Frequency instability
• Difficulty starting compressors
• Circuit-breaker operation
• Excessive engine loading
• Protective shutdown
• Reduced service life

A professional marine electrical load assessment should consider continuous demand, startup current, simultaneous appliance operation, battery-charger requirements, and a practical operating reserve.

A 3.5 kW generator should not automatically be expected to operate every onboard appliance simultaneously. Load management may be required, particularly when starting air-conditioning compressors, electric water heaters, or other high-demand systems.

Multiport Electronic Fuel Injection

One of the principal features of the 3.5 MCGA is its sequential multiport electronic fuel-injection system.

Multiport EFI supplies fuel to the engine through electronically controlled injectors rather than a conventional marine carburettor. Westerbeke states that the system supports efficient fuel delivery, easier starting, improved reliability, reduced emissions, and advanced diagnostic capability.

The EFI system works with the generator’s electronic control unit, engine sensors, fuel pumps, ignition system, and electronic governor.

Potential advantages include:

• Easier cold and warm starting
• Precise fuel delivery
• Improved response to changing load
• Reduced emissions
• Better operation at varying ambient temperatures
• Electronic fault monitoring
• Reduced carburettor-related servicing
• Improved fuel-management accuracy

The engine is certified to operate on unleaded gasoline, and the current model-specific manual specifies an octane rating of 89 or higher. 3.5 MCGA 3.5

Fuel quality remains critical. Water contamination, deteriorated gasoline, deposits, blocked filters, damaged fuel hoses, or unsuitable ethanol-blended fuel storage practices can cause starting and operating problems.

Low-CO Marine Generator Technology

The 3.5 MCGA 3.5 Westerbeke 3.5 MCGA belongs to the company’s family of low-carbon-monoxide marine gasoline generators.

Westerbeke explains that its multiport EFI generators are designed to dramatically reduce normal carbon-monoxide levels in the engine exhaust. The system achieves this through precise control of the engine’s air-to-fuel ratio combined with exhaust after-treatment through a special catalyst.

Low-CO does not mean CO-free.

Carbon monoxide is colourless, tasteless, odourless, and potentially fatal. Even a generator that normally produces reduced CO levels can create an extremely dangerous situation if untreated exhaust leaks into an engine compartment, cabin, cockpit, enclosed canvas area, or space beneath a swim platform.

A correctly installed gasoline-generator system should include:

• Operational carbon-monoxide detectors in occupied areas
• Properly routed marine wet exhaust
• Correct machinery-space ventilation
• Secure exhaust hoses and clamps
• Suitable waterlift muffler
• Correct exhaust outlet positioning
• Regular catalyst inspection
• Periodic exhaust-system inspection
• Immediate investigation of any CO alarm

Westerbeke recommends installing carbon-monoxide detectors in vessel living quarters and treating every CO alarm as a genuine emergency until the source has been found and corrected.

The latest model-specific operating manual states that the catalyst should be inspected and replaced if necessary every 500 operating hours. It also calls for verification of satisfactory CO levels seasonally or every 250 hours, whichever occurs first, using an appropriate CO analyser. 3.5 MCGA 3.5

Water intrusion into the exhaust can damage the catalyst and compromise the generator’s low-CO performance. Correct exhaust design and adherence to Westerbeke’s installation instructions are therefore essential.

Electronic Governing for Stable Frequency

The Westerbeke 3.5 MCGA uses an electronic engine governor to maintain consistent engine speed as connected electrical demand changes.

When an air-conditioning compressor, water heater, charger, or pump is connected, the engine experiences an immediate increase in mechanical load. The governor adjusts throttle position and fuel delivery to help maintain the specified operating speed.

Electronic governing helps reduce the engine-speed drop commonly known as “bogging down” and supports more stable frequency as electrical load is applied.

This can improve the operation of:

• Marine air-conditioning systems
• Refrigeration equipment
• Battery chargers
• Freshwater pumps
• Electric motors
• Lighting systems
• Entertainment equipment
• Sensitive onboard electronics

Westerbeke’s published specification lists frequency regulation of approximately 0.7 Hz, or 1%, from no load to full load.

Stable generator performance still depends on correct wiring, proper grounding, suitable cable sizing, adequate ventilation, effective circuit protection, and sensible electrical-load management.

Brushless Two-Pole Marine Alternator

The Westerbeke 3.5 MCGA uses a brushless two-pole alternator designed for compact marine electrical generation.

Its published alternator features include:

• Brushless construction
• Two-pole design
• Capacitor-based voltage regulation
• Class H insulation
• Approximately ±5% voltage regulation
• Approximately 0.7 Hz frequency regulation
• Direct-connected moulded centrifugal cooling blower
• Marine electromagnetic-interference control

The alternator is rated at 3.5 kW, 120V, 29 amps, 60 Hz, single phase, two wire, and 1.0 power factor.

Although the electrical end uses a two-pole design, Westerbeke specifies the gasoline engine itself at 2500 RPM. The generator’s engineered drive arrangement allows the compact engine and alternator package to deliver the required 60 Hz output.

Brushless construction reduces maintenance associated with carbon brushes, while Class H winding insulation supports dependable operation in demanding machinery-space temperatures.

Potential benefits include:

• Reduced brush-related maintenance
• Compact generator dimensions
• Stable onboard electrical output
• Protected alternator windings
• Practical long-term serviceability
• Compatibility with properly installed marine electrical systems

Electrical performance depends on the entire vessel installation, including output cable size, circuit breakers, neutral and grounding arrangements, transfer switching, ventilation, and load distribution.

Freshwater Cooling with Marine Heat Exchanger

The 3.5 MCGA 3.5 uses a freshwater-cooled gasoline engine with a marine heat exchanger.

Internal coolant circulates through the engine block and freshwater-cooled exhaust manifold. Raw water removes heat through the heat exchanger before being discharged through the water-injected marine exhaust system.

The cooling arrangement includes:

• Closed freshwater coolant circuit
• Marine heat exchanger
• Coolant-recovery tank
• Belt-driven freshwater pump
• Belt-driven raw-water pump
• Freshwater-cooled exhaust manifold
• Water-injected exhaust elbow
• Thermostatically controlled engine temperature

The published cooling-system capacity is approximately 1.46 US quarts or 1.38 litres. Westerbeke lists an approximate raw-water flow of 3.4 US gallons per minute at 2500 RPM before discharge into the exhaust elbow.

The generator uses:

Cooling and Exhaust Connection	Specification
Raw-Water Connection	0.50 in. OD
Exhaust-Elbow Connection	2.0 in. OD
Cooling-System Capacity	1.46 qt. / 1.38 L
Approximate Operating Temperature	170–190°F / 77–88°C

These figures are taken from Westerbeke’s advanced specification and current operator’s manual.

Routine maintenance should include checking:

• Coolant level and condition
• Raw-water seacock
• Seawater strainer
• Raw-water pump impeller
• Freshwater pump
• Drive belts
• Heat-exchanger condition
• Cooling hoses and clamps
• Exhaust mixing elbow
• Waterlift muffler
• Wet-exhaust hose
• Siphon-break arrangement

If the exhaust injection point is at or below the vessel’s loaded waterline, Westerbeke requires a properly installed siphon break to help prevent seawater from entering the engine.

Water-Cooled Returnless Fuel System

The 3.5 MCGA 3.5 uses a water-cooled returnless gasoline fuel system designed to improve operation in elevated machinery-space temperatures.

Fuel is drawn through the vessel’s approved gasoline water-separating filter and delivered through the generator’s low-pressure and high-pressure fuel pumps. The fuel module circulates and cools the gasoline before supplying the fuel rail and electronic injectors.

The water-cooled returnless design helps reduce the risk of vapour lock, which can occur when gasoline becomes excessively hot and forms vapour before reaching the injectors. Westerbeke specifically identifies improved high-temperature performance as one of the system’s benefits.

Published fuel-system specifications include:

• Sequential multiport EFI
• 12V electric low-pressure fuel pump
• 12V electric high-pressure fuel pump
• Water-cooled fuel module
• Returnless fuel arrangement
• Electronic ignition and fuel control
• Minimum 1/4-inch fuel-supply hose
• Maximum 3/8-inch fuel-supply hose
• Unleaded gasoline rated at 89 octane or higher

A U.S. Coast Guard-approved gasoline water separator and filter should be installed between the vessel’s fuel tank and generator. Westerbeke’s manual specifies that gasoline filter assemblies normally use metal bowls rather than transparent collection bowls.

Fuel hoses, shutoff valves, filters, ventilation, ignition protection, and electrical components must comply with applicable marine gasoline-installation standards.

Fuel Consumption

Published approximate fuel consumption is:

Generator Load	Approximate Fuel Consumption
100% Load	0.58 US gal/hr / 2.2 L/hr
75% Load	0.56 US gal/hr / 2.1 L/hr
50% Load	0.47 US gal/hr / 1.8 L/hr
25% Load	0.36 US gal/hr / 1.4 L/hr

These are manufacturer-published figures. Actual fuel consumption may vary according to electrical load, fuel quality, engine condition, installation, maintenance, ambient temperature, and operating environment. 3.5 MCGA 3.5

One-Touch Starting and Automatic Safety Shutdowns

The 3.5 MCGA 3.5 includes a simple one-touch start-and-stop control panel.

The rocker switch eliminates the need for separate start, stop, and fuel-priming controls. The panel also includes a running-hour meter and warning-annunciation light strip.

An optional remote start-and-stop panel can be connected through a compatible 15-foot or 30-foot extension harness.

Automatic protection systems are designed to warn the operator or stop the generator when potentially damaging conditions are detected.

Published protection functions include:

• Engine overspeed
• Engine underspeed
• Low engine-oil pressure
• High exhaust temperature
• High engine-coolant temperature
• Additional electronic-control faults

The operator’s manual also describes a check-engine warning for faults involving the generator’s electronic emissions-control system.

Other standard electrical features include:

• 12V electric starter
• 0.6 kW starting motor
• 5-amp flywheel battery charger
• AC output circuit breaker
• 12V negative-ground electrical system
• Electronic ignition control
• Running-hour meter
• Warning-annunciation panel

Westerbeke lists a minimum cranking requirement of approximately 70 amps at 70°F, although actual starting-battery selection should also consider cable length, ambient temperature, voltage drop, and marine electrical standards.

Automatic protection helps reduce the risk of major generator damage but does not replace regular inspection. Oil level, coolant, raw-water flow, fuel supply, exhaust components, electrical connections, and ventilation should be checked routinely.

Quiet 2500 RPM Operation

Noise and vibration are important considerations aboard smaller boats where the generator may be installed close to cabins, seating areas, or overnight accommodation.

The Westerbeke 3.5 MCGA 3.5 combines:

• A smooth two-cylinder engine
• Electronically controlled 2500 RPM operation
• Precise throttle control
• A specially designed flywheel
• Flexible vibration isolators
• Freshwater-cooled exhaust manifold
• Water-injected marine exhaust
• Compact machinery-space footprint

Westerbeke describes the 2500 RPM engine speed as providing lower-RPM, quieter operation than many compact generators operating at 3000 or 3600 RPM.

A properly installed quiet marine gasoline generator should also include:

• A correctly sized marine waterlift muffler
• Proper wet-exhaust routing
• Adequate machinery-space insulation
• Flexible fuel and cooling connections
• Correct vibration-isolator positioning
• Properly supported hoses and cables
• Sufficient ventilation
• Adequate service clearance

Final onboard sound levels depend on the complete installation rather than the generator alone. Hull construction, machinery-space insulation, exhaust layout, ventilation openings, mounting strength, and vibration transfer all influence the result.

Acoustic Enclosure and Installation Considerations

Westerbeke’s official advanced specification for the 3.5 MCGA 3.5 lists an optional drip shield and drip tray but does not provide dimensions for a dedicated Sound Guard SST package for this model. Any proposed acoustic enclosure should therefore be confirmed for compatibility with the generator’s ventilation, service access, fuel-system, cooling, and exhaust requirements.

A poorly designed enclosure can restrict combustion air, trap heat, obstruct service points, or increase machinery-space temperature. Any custom enclosure must preserve the airflow required by the generator and comply with applicable marine gasoline safety standards.

Installation Dimensions and Weight

The approximate base-generator dimensions are:

Measurement	Specification
Length	27.1 in. / 688 mm
Width	15.8 in. / 401 mm
Height	15.0 in. / 381 mm
Dry Weight	226 lb. / 102 kg
Maximum Operating Inclination	20° in All Directions

These measurements are published on Westerbeke’s official 3.5 MCGA product-support page.

Before installation, the vessel owner, boat builder, or marine engineer should confirm:

• Machinery-space dimensions
• Mounting-point positions
• Generator lifting and removal route
• Dry and operating weight
• Service clearances
• Ventilation requirements
• Ignition-protected electrical installation
• Raw-water inlet location
• Wet-exhaust routing
• Siphon-break requirement
• Fuel-supply connection
• AC output cable route
• Starting-battery cable route
• Remote-control harness route
• Carbon-monoxide detector placement

When replacing an existing small marine generator, matching only its electrical output is insufficient. Voltage, frequency, phase, dimensions, weight, mounting centres, cooling, exhaust, fuel system, ventilation, ignition protection, and control compatibility must also be evaluated.

Applications of the Westerbeke 3.5 MCGA

Small Motor Yachts

The generator may support compatible air-conditioning, battery charging, refrigeration, lighting, water heating, entertainment equipment, and electrical outlets.

Express Cruisers

Its compact size and gasoline fuel system make it suitable for compatible gasoline-powered express cruisers requiring independent AC power away from shore.

Sport-Fishing Boats

The 3.5 MCGA 3.5 may provide electricity for refrigeration, battery chargers, lighting, marine electronics, pumps, and selected onboard appliances.

Cabin Boats

The generator may support overnight-comfort systems such as a compact air conditioner, lighting, battery charging, water heating, and refrigeration.

Day Boats and Weekend Cruisers

Its relatively small footprint can suit vessels that require moderate auxiliary power but have limited machinery-space volume.

Marine Refit Projects

The generator may be considered when replacing an ageing, unreliable, or undersized gasoline generator, provided its mechanical, electrical, cooling, exhaust, fuel, and safety requirements are compatible with the vessel.

Technical Specifications of the Westerbeke 3.5 MCGA

Specification	Details
Brand	Westerbeke
Model	3.5 MCGA
Generator Category	Low-CO Marine Gasoline Generator
Rated Electrical Output	3.5 kW
Voltage	120V
Frequency	60 Hz
Electrical Configuration	Single Phase
Number of Wires	Two
Rated Current	29 Amps
Power Factor	1.0
Engine Operating Speed	2500 RPM
Starting Method	Remote Electric Start
Engine Configuration	Two Cylinders, Horizontal Inline
Engine Cycle	Four-Cycle Gasoline
Aspiration	Naturally Aspirated
Displacement	20.3 cu. in. / 0.333 L
Bore × Stroke	2.40 × 2.24 in.
Compression Ratio	10.2:1
Combustion Chamber	Semi-Spherical
Engine Output	Approximately 6 HP at 2500 RPM
Governor	Electronic
Fuel System	Sequential Multiport EFI
Fuel Type	Unleaded Gasoline, 89 Octane or Higher
Fuel Arrangement	Water-Cooled Returnless System
Fuel Pumps	12V High- and Low-Pressure Electric
Full-Load Fuel Consumption	0.58 GPH / 2.2 LPH
Alternator Type	Brushless, Two Pole
Voltage Regulation	Approximately ±5%
Frequency Regulation	Approximately 0.7 Hz / 1%
Alternator Insulation	NEMA Class H
Cooling System	Freshwater with Heat Exchanger
Cooling-System Capacity	1.46 qt. / 1.38 L
Raw-Water Connection	0.50 in. OD
Exhaust Connection	2.0 in. OD
Exhaust System	Water-Injected Marine Exhaust
Lubricating-Oil Capacity	1.75 qt. / 1.66 L
Starting System	12V DC, Negative Ground
Starting Motor	0.6 kW
Battery Charger	5 Amps
Remote Start Connection	Optional Panel and Harness
Maximum Operating Angle	20° in All Directions
Approximate Dimensions	27.1 × 15.8 × 15.0 in.
Approximate Dry Weight	226 lb. / 102 kg
Production Status	Discontinued; Parts and Documentation Retained

The specifications above are based on Westerbeke’s official advanced specification, current model-support page, and March 2025 operator’s manual. Individual units may vary according to serial number, production date, installed options, and previous modifications.  3.5 MCGA 3.5

Standard Equipment and Available Options

Typical original standard equipment includes:

• Two-cylinder Westerbeke gasoline engine
• Sequential multiport electronic fuel injection
• Water-cooled returnless fuel system
• Electronic engine governor
• Brushless two-pole alternator
• One-touch start-and-stop control panel
• Running-hour meter
• Warning-annunciation light strip
• Automatic safety warnings and shutdowns
• Freshwater cooling system
• Marine heat exchanger
• Coolant-recovery tank
• Electric fuel-lift pump
• High- and low-pressure fuel pumps
• AC circuit breaker
• 5-amp battery charger
• Water-injected exhaust elbow
• Belt-driven raw-water pump
• Flexible vibration isolators
• Lubricating-oil drain hose
• Operator’s manual
• Parts documentation

These features are listed in Westerbeke’s official 3.5 MCGA 3.5 advanced specification.

Available original options may include:

• Remote start-and-stop panel
• 15-foot remote extension harness
• 30-foot remote extension harness
• Onboard spare-parts Kit A
• Extended-cruising spare-parts Kit B
• Hydro-Hush muffler and fittings
• Anti-siphon valve with stainless-steel loop
• Ship-to-shore transfer switch
• Auxiliary DC power adapter
• Drip shield
• Drip tray
• Hose kit
• Optional remote oil-filter arrangement

Current availability should be confirmed because the MCGA model is discontinued. Westerbeke continues to list model-specific maintenance parts and spare-parts kits through its product-support system.

Frequently Asked Questions

What is the 3.5 MCGA 3.5 price?

The 3.5 MCGA 3.5 price depends on current availability, generator condition, manufacturing date, warranty status, included accessories, packing requirements, shipping destination, and whether the unit is unused stock, rebuilt, or previously operated.

How much power does the Westerbeke 3.5 MCGA provide?

The 60 Hz model delivers 3.5 kW at 120V, with rated output of approximately 29 amps.

Is the Westerbeke 3.5 MCGA 3.5 a diesel generator?

No. The MCGA is a marine gasoline generator powered by a two-cylinder, naturally aspirated gasoline engine with multiport electronic fuel injection.

What does low-CO mean?

Low-CO means the generator is designed to reduce normal carbon-monoxide levels through precise electronic air-to-fuel control and exhaust after-treatment using a catalyst. It does not mean that the exhaust contains no carbon monoxide. Proper exhaust installation and functioning CO detectors remain essential.

How many cylinders does the 3.5 MCGA have?

It uses a two-cylinder horizontal inline gasoline engine with approximately 0.333 litres of displacement.

What speed does the engine operate at?

The engine operates at an electronically controlled 2500 RPM.

Is the Westerbeke 3.5 MCGA 3.5 still manufactured?

No. Westerbeke identifies the original 3.5 MCGA 3.5 as no longer in production, although manuals, diagrams, troubleshooting documents, and parts information remain available.

What fuel does it use?

The engine uses unleaded gasoline with an octane rating of 89 or higher.

How much fuel does it consume?

Published full-load fuel consumption is approximately 0.58 US gallons per hour or 2.2 litres per hour.

Does it include remote starting?

The generator has electric starting, and an optional remote start-and-stop panel can be connected using a compatible extension harness.

Can it operate a marine air conditioner?

It may operate a compatible air-conditioning system, depending on the unit’s continuous demand and compressor-starting current. A proper load assessment should be completed before purchase.

Can it replace another 3.5 kW marine generator?

Potentially. The installer must verify voltage, frequency, phase, dimensions, weight, mounting, fuel system, ventilation, ignition protection, raw-water supply, exhaust routing, electrical connections, and service access.

Request a Quote for the Westerbeke 3.5 MCGA

The New 3.5 MCGA 3.55 kW 60 Hz Low-CO Marine Gasoline Generator is a practical option for owners of smaller gasoline-powered vessels requiring compact and dependable marine auxiliary power.

Its 3.5 MCGA 3.5 kW output, lightweight two-cylinder engine, electronically controlled 2500 RPM operation, sequential multiport EFI, water-cooled returnless fuel system, low-CO catalyst technology, brushless alternator, freshwater cooling, automatic protection, and compact installation footprint make it suitable for a variety of recreational marine applications.

Contact our marine generator specialists to confirm:

• Current stock availability
• New, unused, rebuilt, or used condition
• Serial number and manufacturing date
• Warranty eligibility
• 60 Hz electrical configuration
• Included control panel and harness
• Catalyst and emissions-system condition
• Included installation accessories
• Packing dimensions and shipment weight
• Domestic or international shipping options