The thing on the left with the numbers on it is the coil pack. Those big wires covered in heavy silicone insulation are the spark plug wires. If you follow those to their end, you will find they are clipped onto the spark plugs. When removing these, it is best to twist and pull on the boot...the big rubber piece on the end. Do not pull on the wire itself. Once these are off, you can use a 5/8" spark plug socket to remove the spark plugs.