Yanmar M200 Nozzle
Mega Marine supplies genuine and reconditioned nozzle for Yanmar M200 marine engines, along with complete engines and a comprehensive range of spare parts. Fast RFQ response and global delivery.
The fuel injection nozzle assembly comprises the nozzle body, needle valve, and nozzle tip with precisely-drilled spray holes. The needle valve lifts under injection pressure — typically 250-400 bar — to open the spray holes and deliver atomised fuel into the combustion chamber. Spray hole diameter, number, and angle are carefully matched to the engine combustion chamber geometry for efficient fuel-air mixing.
Function in the Engine
Atomises pressurised fuel oil into the precise spray pattern and penetration depth for optimal combustion, controls the spray cone angle and droplet size to maximise fuel-air mixing, maintains fuel-tight sealing between injection events to prevent dribbling.
About the Yanmar M200
200mm bore Yanmar M-series medium-speed engine for propulsion and generator applications in smaller commercial vessels.
Common Issues Requiring Replacement
Spray hole erosion from high-velocity fuel flow widening hole diameter and distorting spray pattern, needle seizure from fuel contamination or thermal distortion, dribbling from worn needle seat causing combustion deposits and increased smoke, blockage of spray holes from asphaltene or wax deposits in off-specification fuels.
Mega Marine supplies genuine OEM and quality reconditioned nozzle for Yanmar M200 engines, with full traceability and global shipping to any port worldwide. We respond to quote requests within 4–6 hours.
- Engine Brand
- Yanmar
- Engine Model
- M200
- Part Category
- Nozzle
- Condition
- Genuine & Reconditioned
Browse the full M200 parts range.
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