Ignition Coil Pack for Cadillac - DeVille Seville SRX STS XLR - Pontiac - Bonneville - Buick Lucerne V8 4.6L Compatible with C1509 UF-372 DIRECT REPLACEMENT/ UPGRADE over your original stock coils. We only use the highest grade materials. This makes our product durable and reliable under extreme conditions while providing High Electrical Resistance, strong Spark from plugs, and being resistant to Corrosion and Abrasion IGNITION COILS FOR 2004 to 2005 Cadillac DeVille 4.6L, 2004 to 2005 Cadillac SRX 4.6L, 2005 Cadillac STS 4.6L, 2004 Cadillac Seville 4.6L, 2004 to 2005 Cadillac XLR 4.6L, 2004 to 2005 Pontiac Bonneville 4.6L CADILLAC and PONTIAC owners please check fitment bar and description before you BUY IT as the ignition coil pack can change based on the year/ month of manufacture of your vehicle Compatible Part Numbers: D593A, 5C1552, E402, 52-1817, IC502, 12585765 One Year Warranty Eliminate misfire Direct installation into vehicle Increase horsepower Stronger throttle response Durable as they come Custom-made for the road Fit OE equipment with ease Tested in real life situations Most coils comepre-greased