Description:

[Vehicle Fitment]: Compatible with Cadillac CTS 2004-2005; Compatible with Chevrolet Camaro 1998-2002, Corvette 1997-2004; Compatible with Pontiac Firebird 1998-2002, GTO 2004---V8 5.7L. [Reference Number]: UF-192, 12556450, 12558948, 3861267, 38612677, 2238, TR5. [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..