what are these plugs for the 1jz i think the grey one is the oil level sensor and the black one comes out of the harness along the fire wall part :1zhelp:
so i haven't had a 1j in three years i use to run 3330's in the motor.
when i went to look up the spark plugs for my new 1j at my work (auto zone).
it showed that ngk no longer makes that. i don't know if this is true or not but our
computers at my work says auto light 3923 will work in...
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