2010 Toyota Highlander Owners Manual - Page 569
2010 Toyota Highlander Manual
Page 569 highlights
6-1. Specifications Ignition system Spark plug Make Gap DENSO SK20R11 NGK IFR6A11 0.043 in. (1.1 mm) NOTICE
We apologize, but we cannot currently deliver this PDF manual by request of the manufacturer.
We apologize for any inconveniece.