Compatibility:for Pontiac GTO 5.7L 2004,for Pontiac Firebird 5.7L 1998-2002,for Pontiac Firebird 3.8L 1998-2002,for GMC Yukon XL 2500 8.1L 2001-2002,for GMC Yukon XL 2500 6.0L 2001-2002,for GMC Sierra 2500 HD 8.1L 2001-2002,for GMC Savana 3500 8.1L 2001-2002,for GMC Savana 3500 6.5L 2001-2002,for GMC Savana 3500 5.7L 2001-2002,for Chevrolet Corvette 5.7L 1997-2004,for Cadillac CTS 5.7L 2004-2005,for Cadillac CTS 3.6L 2004-2005,for Cadillac CTS 3.2L 2004,for Cadillac CTS 2.8L 2005. Replace OEM Part Number:D580, 5C1078, E247, 52-1573, IC334, 12556450, 12558948, UF-192 UF192 UF-192. Aintier Coil Packs are designed for original replacement applications. Every component both matches and improves on the OE design to ensure easy and fast installation with superior performance, reliability and stability. Premium Ignition Coil Set can solve the following common issues: no start/ hard to start, long crank time, lack of power, inconsistent and check engine light illumination.
