

New Yanmar D40 40HP Diesel Outboard Motor Diesel Marine Engines
$8,988.00
- Description
Description
YANMAR D40 40HP Diesel Outboard Engine – Compact, Powerful, and Performance Driven
Specifically designed for commercial and recreational uses, the YANMAR D40 40HP Diesel Outboard Motor performs exceptionally and offers high fuel efficiency. This marine-grade, diesel outboard engine is designed for optimal fuel efficiency and performance, making it ideal for demanding operational hours and elements – perfect for fishing, work, or offshore boats. This engine boasts 40hp per 4500 rpm.
Marine Inboard Specialists offers genuine diesel outboard marine engines with complete manufacturer warranties, expert support for installations, and global deliveries. If you need a reliable source of marine power the D40 also offers excellent performance and unmatched value.
Why would someone choose the YANMAR D40 Diesel Outboard Motor?
This 40 HP diesel outboard motor is an exceptionally built and fuel-efficient option for gasoline outboards. The YANMAR D40 is designed for durability and efficiency due to fuel direct fuel injection, cooling, and remote control of the motor for speed and clutch command.
Key Benefits of YANMAR D40 40HP Diesel Outboard Motor:
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High-Efficiency Diesel Power: Direct injection system maximizes combustion efficiency while reducing fuel usage.
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Low Operating Costs: Diesel technology offers lower long-term operating costs compared to gasoline outboards.
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Long-Term Durability: Water-cooled system with trochoid pump lubrication ensures engine longevity in marine conditions.
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Low Emissions: Complies with international emission standards for cleaner marine propulsion.
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Enhanced Maneuverability: Remote-controlled clutch and throttle systems offer responsive and safe navigation.
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Compact Footprint: Lightweight and compact design makes it perfect for both commercial and recreational transom-mount installations.
Technical Specifications of YANMAR D40 40HP Diesel Outboard Motor
| Specification | Details |
|---|---|
| Engine Configuration | 4-Cycle, Vertical, Water-Cooled Diesel Engine |
| Cylinders | 3 |
| Bore × Stroke (mm/in.) | 82 × 70 (3.23 × 2.76) |
| Displacement | 1019 cc (68 cu. in.) |
| Maximum Output | 40HP @ 4500 RPM (29.41kW @ 4500 RPM) |
| Combustion System | Direct Injection |
| Starting System | Electric + Emergency Rope Start |
| Cooling System | Direct Seawater Cooling (Rubber Impeller Pump) |
| Lubrication | Forced Lubrication with Trochoid Pump |
| Generator | AC Dynamo Built into Flywheel |
| Clutch Type | Dog Type Clutch |
| Reduction Ratio | Ahead/Astern – 1.846/1.846 |
| Direction of Rotation | Clockwise (View from Propeller) |
| Tilt-Up System | AX-E Manual / AX-EP Hydraulic |
| Control System | Remote-Controlled Clutch and Engine Speed |
| Fuel Type | Diesel Fuel with Kerosene (30:1 Oil Mix) |
| Fuel Capacity | 24L (1465 cu. in.) |
| Mounting | Transom Mounted with Through Bolts and Nuts |
What’s Included in the Package
When you purchase the YANMAR Marine Engine D40 40HP Diesel Outboard Motor from Marine Inboard Specialists, your engine package includes:
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Genuine YANMAR D40 outboard motor
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Built-in seawater cooling and forced lubrication systems
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Remote control unit for throttle and clutch
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AX-EP Hydraulic Tilt-Up System (optional)
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AC Dynamo generator
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3-blade standard propeller
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24L diesel fuel tank
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Installation and maintenance manual
All items are factory-sealed and verified for marine-grade reliability.
Optional Accessories and Upgrades
Customize your YANMAR D40 with the following optional accessories for extended performance:
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Hydraulic Tilt-Up Kit for smoother tilting and deployment
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Spare 3-blade or specialty propellers
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Fuel-water separator filtration kit
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Extended wiring harnesses for remote console installations
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Onboard spare parts and maintenance kit
Warranty Information
The YANMAR D40 Diesel Outboard Engine is backed by a comprehensive 5-year manufacturer warranty, covering defects in materials and workmanship. As an official YANMAR supplier, Marine Inboard Specialists provides complete after-sales support, including diagnostics, spare parts, and service assistance throughout the warranty period.
Applications
The YANMAR D40 40HP Diesel Outboard Motor is built to serve a wide range of marine applications:
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Commercial Fishing Boats: Dependable power for daily operations and extended usage.
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Recreational Boats: Quiet, fuel-efficient boating for families, cruisers, and water sports.
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Tender and Auxiliary Boats: Compact and lightweight for secondary propulsion.
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Workboats: Tough construction ideal for industrial or commercial marine work.
If you’re looking for a diesel-powered outboard motor for sale that can withstand daily use while keeping operational costs low, the YANMAR D40 is an exceptional choice.
Frequently Asked Questions (FAQs)
1. What types of boats can use the YANMAR D40?
The engine is ideal for workboats, small fishing vessels, auxiliary tenders, and recreational boats up to 25 feet.
2. How does the D40 compare to a gasoline outboard?
It delivers more torque at lower RPMs, offers longer lifespan, and significantly better fuel economy.
3. Does the YANMAR D40 meet emission standards?
Yes, it meets international marine diesel engine emission standards for clean operation.
4. Is this engine built for continuous use?
Absolutely. The D40’s durable construction and cooling/lubrication systems make it ideal for extended run times.
5. Can I upgrade to a hydraulic tilt system?
Yes. The AX-EP hydraulic tilt-up kit is available as an optional upgrade.
6. Do you offer installation support?
Yes. Marine Inboard Specialists provides professional installation advice, spare parts availability, and servicing support.
7. Is international shipping available?
We offer secure, tracked global shipping for all YANMAR outboard motors, with priority handling available upon request.
Buy the YANMAR D40 Diesel Outboard Motor Online Today
If you’re searching for a 40HP diesel outboard engine for sale that delivers on power, fuel savings, and reliability, the YANMAR D40 is your best choice. Built to last and backed by a full manufacturer warranty, it is the perfect solution for serious boaters and marine operators.
Contact Marine Inboard Specialists today for pricing, lead time, and shipping information. Our team is ready to help you select the ideal engine package for your vessel.


