YANMAR 8LV-320Z Marine Diesel Engine – 320 HP
The YANMAR 8LV-320Z Marine Diesel Engine 320 HP is a compact, high-performance V8 diesel engine developed for sport cruisers, motor yachts, recreational powerboats, and compatible sterndrive repowering projects.
Producing 320 metric HP (235 kW) at 3,800 RPM, the 8LV-320Z features a 4.46-litre V8 configuration, twin turbochargers, intercooling, and Denso electronic common-rail direct injection.
Designed for the YANMAR ZT370 sterndrive system, the 8LV-320Z delivers responsive acceleration, smooth electronic engine management, and an excellent power-to-weight ratio for recreational marine propulsion.
Why Choose the YANMAR 8LV-320Z?
Powerful 320 HP V8 Performance
The engine delivers 320 metric HP from a compact 4.46-litre V8, providing responsive performance for compatible recreational powerboats.
Twin-Turbocharged Diesel Technology
Twin turbochargers and intercooling support strong acceleration, effective air delivery, and efficient combustion.
Advanced Common-Rail Injection
The Denso common-rail system provides electronically controlled fuel delivery, supporting smooth operation, precise engine management, and reduced combustion noise.
Compact Sterndrive Installation
The 8LV-320Z is engineered for integration with the YANMAR ZT370 sterndrive, offering a practical propulsion arrangement for suitable recreational vessels.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | YANMAR Marine |
| Engine Model | 8LV-320Z |
| Engine Series | YANMAR 8LV |
| Engine Type | Four-stroke marine diesel |
| Configuration | 90° V8 |
| Displacement | 4.460 litres / 272.24 CID |
| Maximum Crankshaft Power | 320 metric HP / 235 kW |
| Approximate Mechanical Horsepower | 315 bhp |
| Rated Engine Speed | 3,800 RPM |
| Continuous Crankshaft Rating | 214 kW / 291 metric HP at 3,683 RPM |
| Bore × Stroke | 86 × 96 mm |
| Fuel Injection | Denso electronic common-rail direct injection |
| Aspiration | Twin turbocharged and intercooled |
| Engine Management | Electronic |
| Cooling System | Freshwater cooling with seawater heat exchange |
| Starting System | 12V electric, 2.7 kW |
| Alternator | 12V / 180A |
| Starting Assistance | Glow-plug system |
| Lubrication | Enclosed forced lubrication |
| Crankshaft Rotation | Counterclockwise, viewed from flywheel end |
| Engine-Only Dry Weight | Approximately 435 kg |
| Propulsion | YANMAR ZT370 sterndrive |
| Controls | Compatible YANMAR electronic vessel controls |
| Applications | Sport cruisers, motor yachts and recreational powerboats |
The 320 metric HP rating is measured at the crankshaft, not the propeller shaft. Engine-only weight excludes the sterndrive and transom assembly.
Compatible Sterndrive and Control Systems
The YANMAR 8LV-320Z is intended for integration with the YANMAR ZT370 sterndrive.
YANMAR ZT370 Sterndrive
The ZT370 is a twin-propeller sterndrive system developed for compatible YANMAR marine diesel engines.
Its design supports responsive steering, efficient propulsion, and precise maneuvering.
The exact drive ratio, propeller set, transom assembly, and installation components must be selected for the vessel.
Compatible Electronic Controls
Depending on the engine generation and selected package, compatible equipment may include:
- YANMAR VC10 vessel control system
- YANMAR VC20 vessel control system
- YANMAR JC10A joystick control for supported sterndrive installations
- YANMAR YD25 engine display
- YANMAR YD42 multifunction display
- Compatible electronic throttle and shift controls
- Engine monitoring and alarm systems
Control compatibility must be verified against the engine and drive serial numbers.
Applications and Operating Requirements
The YANMAR 8LV-320Z is primarily designed for recreational marine propulsion, including sport cruisers, dayboats, motor yachts, and compatible diesel sterndrive repowering projects.
YANMAR’s operation manual distinguishes between the engine’s maximum output and its lower continuous rating.
The 320 HP maximum output should not be represented as continuous commercial-duty power. Engine selection must account for vessel loading, expected operating hours, propeller requirements, and manufacturer-approved operating conditions.
Price, Package Contents and Warranty
Price: Contact JB Marine GmbH for a quotation.
Depending on the selected configuration, the package may include:
- YANMAR 8LV-320Z marine diesel engine
- Starter motor and 180A alternator
- Freshwater cooling components
- Electronic engine management equipment
- Flexible engine mounts
- Selected wiring and installation accessories
The ZT370 sterndrive, transom assembly, propellers, electronic helm controls, displays, and exhaust installation components must be specifically confirmed in the quotation.
Warranty: Applicable manufacturer or seller warranty coverage depends on the engine’s condition, production year, market, and supply arrangement. Full terms will be confirmed before purchase.
Frequently Asked Questions
How Much Power Does the YANMAR 8LV-320Z Produce?
The engine produces 320 metric HP (235 kW) at 3,800 RPM, measured at the crankshaft.
What Is the Displacement of the 8LV-320Z?
The engine has a displacement of 4.46 litres.
Is the YANMAR 8LV-320Z Twin-Turbocharged?
Yes. It features twin turbochargers and intercooling.
Which Sterndrive Is Compatible?
The YANMAR ZT370 is the manufacturer-documented sterndrive system.
Does the Engine Include the ZT370 Sterndrive?
Not automatically. The exact engine, drive, controls, and installation package must be confirmed in the quotation.
What Is the Difference Between the 8LV-320 and 8LV-320Z?
The 8LV-320 can be configured for conventional inboard shaft-drive propulsion, while the 8LV-320Z is intended for a compatible ZT370 sterndrive installation.
Buy the YANMAR 8LV-320Z from JB Marine GmbH
Looking for a YANMAR 8LV-320Z 320 HP marine diesel engine for sale?
JB Marine GmbH provides quotations for YANMAR marine diesel engines, compatible sterndrive packages, electronic controls, propulsion accessories, and international shipping.
Contact our sales team with your vessel specifications, preferred propulsion package, required quantity, and delivery destination.
Request your YANMAR 8LV-320Z quotation today.
Website: https://jbmarinegmbh.de/
