Spark Plug - Toyota FJ GSJ10 Technical Manual

ENGINE — 1GR-FE ENGINE

3. Spark Plug

Long-reach type spark plugs are used. This type of spark plugs allows the area of the cylinder head to receive
the spark plugs to be made thick. Thus, the water jacket can be extended near the combustion chamber,
contributing to cooling system performance.
Long-reach Type Conventional Type Water Jacket
0240EG23C