Spark Plug for 4AGE BT 20v engine is IK20.
For further information, u may refer this website
http://www.globaldenso.com/en/products/aftermarket/plug/basic_knowledge/heatrange/index.html
Hi frens, any idea how to remove damaged wheel nut? because mine broken half way when I tightening it. so I tried several ways to unscrew it but the nut damaged I'm scared to cut it with cisel because it'll damage...