The size of a spark plug socket depends on the size of the hex nut on the spark plug's shell. The most common spark plug socket sizes are 5/8 inch (16mm) and 13/16 inch (20mm)
. Here are some typical spark plug socket sizes and their applications:
- 5/8 inch (16mm): Very common, used in scooters, motorcycles, and cars
- 13/16 inch (20mm): Common in cars and older vehicle engines
- 9/16 inch (14mm): Used in some Asian cars and Fords
- 11/16 inch (18mm): Used in small engines, such as lawn mowers
- 7/8 inch (22mm): Not very common
It is essential to use the correct socket size to avoid damaging the spark plug or any wiring. You can find spark plug sockets in various interchangeable sizes that can be attached to a socket set
. It is also crucial to ensure that the new spark plug has similar threads as the old one to avoid misfires and carbon fouling
