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, I'm probably one in a million posting this thread but after some soul searching I have decided to buy an Altezza. Seems the best fit for my needs and budget at the moment before buying that R8 =;). Anyways ... My...