- Description
Description
Yanmar 3YM30AE Marine Diesel Engine 30HP
The Yanmar 3YM30AE marine diesel engine brings three-cylinder diesel propulsion to sailboats and other pleasure craft. Listed in the 30HP class, this model has a manufacturer-published maximum crankshaft output of 21.3 kW / 29.1 metric HP at 3,200 rpm. YANMAR Marine International
Looking for a Yanmar 3YM30AE engine for sale? Contact MSS Motorsports UG for current availability, engine condition, package details and a delivery quotation. Specify whether your project requires a shaft-drive gearbox or saildrive configuration so the quotation reflects your vessel’s installation.
Yanmar YM Series Power for Sailboats and Cruising
The 3YM30AE sits at the upper end of Yanmar’s YM Series, a range developed for smaller sailboats and pleasure craft. Its naturally aspirated, indirect-injection design uses mechanical controls.
For a new installation or sailboat repower, the configuration offers:
- Three-cylinder construction: A 1.266-litre, vertical in-line diesel layout.
- Mechanical fuel delivery: Indirect injection through an in-line pump.
- Freshwater cooling: An engine coolant circuit with a heat exchanger.
- Electric starting: A factory specification of 12V with a 1.4 kW starter.
- Charging equipment: A 12V, 125A alternator in the published specification. YANMAR Marine International
Confirm the actual equipment supplied, especially when comparing engines of different ages, conditions or package configurations.
Technical Specifications
| Specification | Manufacturer-Published Details |
|---|---|
| Engine model | Yanmar 3YM30AE |
| Maximum crankshaft output | 21.3 kW / 29.1 MHP at 3,200 rpm |
| Continuous crankshaft output | 19.4 kW / 26.4 MHP at 3,101 rpm |
| Engine configuration | Three-cylinder, in-line, vertical four-stroke diesel |
| Displacement | 1.266 litres |
| Bore × stroke | 80 × 84 mm |
| Aspiration | Naturally aspirated |
| Fuel system | Indirect injection, in-line pump |
| Engine controls | Mechanical |
| Cooling system | Freshwater cooling with heat exchanger |
| Starting system | Electric, 12V / 1.4 kW |
| Alternator | 12V / 125A |
| Dry engine weight | 127 kg, excluding gearbox or saildrive |
MHP means metric horsepower. The 30HP listing label should be read alongside Yanmar’s published 29.1 MHP maximum rating. yanmar.com
For recreational operation, Yanmar’s YM manual specifies maximum throttle for less than 5% of total engine time. Follow the operating profile in the manual applicable to the supplied engine. yanmar.com
Shaft-Drive Gearbox and Saildrive Options
Yanmar documents two propulsion arrangements for the 3YM30AE:
- Kanzaki KM2P-1 marine gearbox: A shaft-drive arrangement using a mechanical cone clutch.
- Yanmar SD25 saildrive: An alternative drive configuration using a constant-mesh gear and dog clutch.
The correct choice depends on the vessel’s existing drivetrain and installation design. Confirm the gearbox or saildrive model, reduction ratio, propeller requirements and supplied connecting components.
Yanmar’s reference package includes a B20 instrument panel, flexible mounts and an exhaust mixing elbow. Your quotation should state which components are included. yanmar.com
Review the official Yanmar 3YM30AE specifications for manufacturer information and available technical drawings.
Plan Your Sailboat Repower Around the Complete Installation
A successful replacement involves more than matching horsepower. Provide your installer with the existing engine model, transmission details, engine-bed measurements and photographs of the machinery space.
Check shaft alignment, coupling dimensions, exhaust routing, cooling-water connections, control cables and access for routine servicing. For saildrive projects, verify the complete engine-to-drive arrangement before ordering.
The quoted 127 kg engine weight excludes the transmission. Use the relevant installation drawing and complete package weight when assessing space, mounting and handling requirements.
For a lower-output model in the same family, compare the Yanmar 3YM20 marine inboard diesel engine. Assess each model against your vessel’s propulsion requirements.
Confirm Your Engine Package and Purchase Terms
When comparing a Yanmar 3YM30AE price, request a written quotation covering:
- Exact engine identification, condition and documented hours, where applicable.
- Gearbox or saildrive model, ratio and included components.
- Control panel, wiring harness, mounts and exhaust equipment supplied.
- Available inspection records, service history and running-test evidence.
- Warranty provider, eligibility, coverage and exclusions.
- Packing, estimated dispatch timing and delivery charges.
An itemised quotation helps you compare the total equipment cost and identify additional installation work before purchasing.
Frequently Asked Questions
Is the Yanmar 3YM30AE exactly 30HP?
Yanmar publishes 29.1 metric HP at 3,200 rpm as the maximum crankshaft rating. This listing uses the 30HP class designation. yanmar.com
Can it be supplied for shaft drive or saildrive?
Yanmar documents KM2P-1 gearbox and SD25 saildrive configurations. Confirm availability and the exact package required for your installation.
Does the engine include a manufacturer warranty?
Warranty depends on the engine’s condition, supply arrangement and eligibility. Request written terms identifying the warranty provider and any registration or commissioning requirements.
Request Your Yanmar 3YM30AE Quote
Contact MSS Motorsports UG for a Yanmar 3YM30AE quotation with your vessel make and model, current engine, gearbox or saildrive model and ratio, intended use and purchase timing. Include your billing and delivery addresses to request equipment pricing and transport costs.
