Original Ford Expedition spark plug set 8 pieces

Original spark plugs from Ford Please write the chassis number or attach a picture of the form so we can ship the appropriate part for the car. Signs of spark plug damage: - Difficulty starting the engine - Unusual vibrations while driving - Lack of acceleration - Increased fuel consumption - Unusual exhaust emissions When do we recommend changing the spark plugs? We recommend inspecting and changing the spark plugs every 30,000 to 50,000 kilometers, or according to the car manufacturer's recommendations. If any of the above signs of damage are noticed, it is preferable to consult a specialized technician to determine the need for replacement.