The function is to discharge the high voltage pulse from the high voltage wire to break the air between the two electrodes of the spark plug and generate an electric spark to ignite the mixed gas in the cylinder
Extremely important part, without it the engine will not work
Although the spark plug is small, its construction is not simple
It has two major components of insulator and metal shell
Fit for Toyota RAV4 Avensis Allion Wish Voxy, the OE number is 90919-01221
 
Product description
Description
Fit for Toyota RAV4 Avensis Allion Wish Voxy.
the OE number is 90919-01221.