Genuine OEM Jaguar Spark Plug, part number C2Z28434. This essential component is responsible for igniting the air-fuel mixture within the engine's combustion chambers, initiating the power stroke. It is installed in the cylinder head. Manufactured by NGK as an OEM supplier, it ensures reliable ignition. Choosing a genuine OEM spark plug guarantees the correct heat range, electrode gap, and material composition for optimal engine performance, fuel efficiency, and emissions control.