Cummins Spark Plug 5557905L / 5557905 / C5557905 For Heavy-duty Natural Gas CNG/LNG Truck Engines.

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Cummins Spark Plug 5557905L / 5557905 / C5557905 for heavy-duty natural gas CNG/LNG truck engines

The Cummins 15N/Z15N engines feature an inline-six configuration, requiring the replacement of six units per vehicle.

Core Product Features

1. High-voltage ignition of the natural gas mixture: The spark plug receives high-voltage electricity from the ignition coil and breaks down the air-fuel mixture to generate a powerful electric spark. This precisely ignites the natural gas and air mixture within the combustion chamber in an extremely short timeframe, driving the piston to perform work.
2. Supporting natural gas engine combustion: Designed to meet China VI emission standards, the system employs lean-burn technology to enhance fuel economy, ensuring efficient and stable ignition even under demanding operating conditions characterized by high gas density and a lean mixture.
3. Efficient heat dissipation to maintain combustion chamber thermal balance: Natural gas combustion generates internal temperatures far exceeding those of conventional diesel or gasoline engines, subjecting the spark plug to extreme thermal loads. Through its internal copper core and ceramic insulator, the spark plug rapidly transfers excess heat-absorbed by the electrodes-to the coolant passages in the engine cylinder head, thereby preventing the spark plug tip from overheating and glowing red.

The generally recommended replacement interval is 50,000 to 60,000 kilometers.
To ensure consistent ignition energy and balanced power output across all cylinders, replacing the spark plugs for only one or two cylinders is strictly prohibited; the entire set of six must be replaced simultaneously.

DETAILS

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