IS 250C V6-2.5L (4GR-FSE) (2011)
Spark Plug: Specifications
Spark plug .............................................................................................................................................................................. 18 Nm (184 kgf-cm, 13 ft-lbf)
Maximum electrode gap for a used spark plug ....................................................................................................................................... 1.4 mm (0.0551 in.)
Electrode gap for a new spark plug .............................................................................................................................. 1.0 to 1.1 mm (0.0394 to 0.0433 in.)