Spark Plug : What is the best spark plug for my standard 2006 Ully ?

[Naude Hopper]

Please tell me what is the best spark plug to use and reference number.

[nilla]

http://kalecoauto.com/index.php?main_page=product_info&cPath=2&products_id=5

[nilla]

or NGK. people seem to like those too.
if you get the ones rated for a higher spark temperature, they reprtedly foul less frequently

[Stevenc150]

NGK Iridium - DCPR9EIX

[LionBuell]

+1 on the Iridium.