Yanmar 8LV350 – Inboard Diesel Engine 350 HP

Description

Constructed with a verified heavy-duty heat exchanger and a 4.46-liter V8 block, the Yanmar 8LV350 produces 350 horsepower at 3800 RPM. This twin-turbocharged, intercooled marine diesel engine powers sportfishing boats, express cruisers, and motor yachts. High-pressure common-rail fuel injection delivers clean, smoke-free combustion, while VC10 electronic vessel controls handle digital throttle and shift management.

Closed heat exchanger cooling keeps seawater out of internal block passages, extending engine life. Fitted with an SAE 3 flywheel housing, the engine includes a 12V 180-amp alternator, KMH61A or KMH61V hydraulic gear options, and a dry weight of 450 kg.

Key Specifications of the Yanmar 8LV350 Inboard Marine Engine

• The 4.46-liter V8 diesel block generates 350 horsepower at 3800 RPM, offering high power density for fast planing vessels.
• Twin turbochargers with water-cooled intercoolers deliver dense intake air, ensuring rapid throttle response and mid-range cruise efficiency.
• Common-rail direct fuel injection optimizes atomization, drastically reducing mechanical engine noise, smoke emissions, and fuel consumption.
• Freshwater heat exchanger cooling isolates the cylinder block from raw seawater, preventing internal scale and corrosion over time.
• A heavy-duty 12V 180-amp alternator provides high-capacity charging output to support heavy DC house loads and bridge electronics.
• The standard SAE 3 flywheel housing pairs with KMH61A down-angle or KMH61V V-drive hydraulic marine gears for flexible installation.

Engine Performance and Engineering

Smooth V8 balance and high-pressure fuel injection create an exceptionally refined power plant in this Yanmar inboard engine. Forced lubrication protects internal bearings under high-speed operation, while digital VC10 controls provide smooth helm operation.

Why Choose the Yanmar 8LV350 Inboard Marine Engine

Captains select the 8LV350 marine engine for its light dry weight and potent 350 horsepower V8 performance. Common-rail fuel delivery and twin intercooled turbochargers provide instant acceleration without diesel smoke. Closed heat exchanger cooling, SAE 3 housing compatibility, and an 180-amp alternator make it a top repower choice.

Mounting and Compensation Considerations

Ensure engine bed stringers match mount centers and verify overhead clearance for crane positioning. Check that raw water sea strainers and exhaust risers meet the flow requirements for a 350 horsepower V8 diesel.

Warranty and Support

Yanmar protects this high-performance engine with a 2-Year Limited Recreational Warranty covering major engine block assemblies. Mulmarine.com provides product-information support before purchase and assistance with order-related questions. A pre-shipment visual inspection confirms the engine crate and documented included rigging items. Review warranty eligibility and current coverage details on Mulmarine.com before placing your order.

Before Ordering the Yanmar 8LV350 Inboard Marine Engine

Measure your engine room length, width, and height to confirm fitting space for a 4.46-liter V8 block. Confirm your transmission ratio, shaft coupler bolt pattern, and battery cold cranking amps before completing your purchase.