[Vehicle Fitment]: Compatible with Cadillac DeVille 2004 V8 4.6L, DeVille 2005 V8 4.6L (Complete Assembly), Seville 2004 V8 4.6L (Complete Assembly); Compatible with Pontiac Bonneville 2004-2005 V8 4.6L (Complete Assembly) --- 2x Ignition Coil and 8x Iridium and Platinum Spark Plug Kit, Using High-Performance Iridium Spark Plugs.. [Reference Number]: UF372, 89017778, 12585765, 12567285, 7164. [Specifications]: Terminal Quantity: 7; Terminal Type: Blade; Mount Type: Bolt On; Mounting Location: Valve Cover; Voltage: 12V. [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..
