Sienna AWD V6-3.5L (2GR-FE) (2007)
Spark Plug: Specifications
Maximum electrode gap for used spark plug...............................................................................................................................................1.4 mm (0.055 in.)
Electrode gap for new spark plug........................................................................................................................................1.0 to 1.1 mm (0.039 to 0.043 in.)
Torque.................................................................................................................................................................................... 18 Nm (184 kgf.cm, 13 ft. lbs.)