Description:

[Vehicle Fitment]: Compatible with Buick Rainier 2006-2007; Compatible with Chevrolet Trailblazer 2006-2009, Trailblazer EXT 2006; Compatible with Isuzu Ascender 2006-2007; Compatible with Saab 9-7x 2006-2009---L6 4.2L. [Reference Number]: UF497, 12596547, 12496574, 12612369, 12629472, H6T15271ZC, 8125965470, 5019, LTR5GP. [Iridium spark plug]: Iridium is a type of refined alloy which is highly suitable to be used as the materials of the central electrode in a spark plug. It extends the life of the spark plug nearly threefold, ensures a more stable idle speed of the engine, and delivers a super performance to the engine with improved fuel efficiency, reduced emissions and faster starting up..