NISSAN 22448-AR215 Ignition Coil (TB48, VK45)

The Nissan 22448-AR215 genuine (OEM) ignition coil is a precision-engineered high-voltage transformer that serves as a critical component of the vehicle's ignition system. Its function is to convert the vehicle's low-voltage (12V) direct current into the high voltage required to operate the spark plug. This high voltage creates the spark in the combustion chamber that ignites the air-fuel mixture.

Technical Features and Operating Principle

The ignition coil operates on the principle of electromagnetic induction. When the current flowing through the primary winding is interrupted, a sudden high voltage is induced in the secondary winding. Genuine Nissan parts are manufactured to strict tolerances, ensuring maximum thermal resistance and resistance to vibration.

• Voltage Conversion: Efficient and stable voltage step-up for an optimal combustion process.
• Thermal and Vibration Resistance: Specialized epoxy resin insulation protects the internal windings from high engine block heat and mechanical vibrations.
• Direct Connection: Coil-on-Plug (COP) design that mounts directly onto the spark plug, minimizing voltage drop and eliminating the need for conventional ignition cables.

Typical Symptoms of Failure

Ignition coils can wear out over time due to continuous thermal stress and electrical demand. The most common symptoms of failure include:

• Misfire: Engine hesitation or jerking, especially during acceleration or under load.
• Rough Idle: Unstable engine operation at idle.
• Increased Fuel Consumption: Incomplete combustion reduces engine efficiency.
• Hard Starting: Especially in cold or humid weather conditions.
• Check Engine Light: The vehicle's on-board diagnostic system (OBD-II) stores fault codes (e.g., P0300 series codes).

Installation and Maintenance Recommendations

When replacing an ignition coil, it is recommended to inspect the condition of the spark plugs as well. Worn spark plugs with excessive electrode gaps create increased electrical resistance, which can lead to ignition coil overheating and premature failure. Professional installation is recommended, ensuring clean electrical contacts and proper mounting.