Yanmar 8LV320 – Inboard Diesel Engine 320 HP

Using verified common-rail technology and twin water-cooled turbochargers, the Yanmar 8LV320 delivers 320 horsepower at 3800 RPM. Built on a 4.46-liter V8 diesel block, this power package serves express cruisers, motor yachts, and sportfishing hulls. High-pressure fuel injection cuts mechanical clatter at idle, while intercooled turbocharging preserves intake air density during continuous high-speed cruising.

A closed freshwater heat exchanger system regulates engine temperatures, keeping seawater away from internal waterways. Electrical hardware includes a 12V 180-amp alternator, an SAE 3 flywheel housing, KMH61 hydraulic gear compatibility, and a light dry weight of 450 kg.

Engine Performance and Engineering

Advanced electronic management and light V8 block casting give this Yanmar inboard engine superior power density. Common-rail injection eliminates diesel clatter at low speeds, while digital VC10 controls deliver precise throttle synchronization for twin-engine vessels.

Why Choose the Yanmar 8LV320 Inboard Marine Engine

Vessel owners choose the 8LV320 marine engine for its compact 4.46-liter V8 block and smooth 320 horsepower output. Its common-rail injection technology and intercooled twin turbos deliver clean, smoke-free operation. With an 180-amp alternator, SAE 3 housing, and light 450 kg weight, it represents a modern repower choice.

Warranty and Support

Yanmar covers this propulsion unit with a 2-Year Limited Factory Warranty covering major engine block assembly defects. provides pre-purchase technical guidance and freight shipping customer support. Prior to freight shipment, staff verify the crated engine package against the confirmed order details. Review the applicable warranty information on before completing your order.

Before Ordering the Yanmar 8LV320 Inboard Marine Engine

Measure your engine room compartment hatch opening and height to confirm fitting space for a V8 block. Verify your transmission gear ratio, shaft coupling layout, and NMEA 2000 display compatibility before completing your purchase.