Genuine OEM Hyundai Spark Plug, part number 1887508085. This critical component is responsible for igniting the compressed air-fuel mixture within the engine's combustion chambers, initiating the power stroke. It is installed in the cylinder head, with the electrode tip extending into the combustion chamber. This spark plug measures approximately 88.5 mm in length and weighs about 0.04 kg. Choosing a genuine OEM spark plug ensures the correct heat range, electrode gap, and material composition for optimal engine performance, fuel efficiency, and emissions control.