Ignition Coil Horizontal Connector Plug for 2004 2005 2006 Cadillac SRX STS XLR DeVille Pontiac Bonneville Buick Lucerne V8 4.6L UF564 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 COIL PACK for 2006 Buick Lucerne, 2004 2005 Cadillac Deville XLR Pontiac Bonneville, 2006 Cadillac DTS, 2004 Cadillac Seville, 2004 2005 2006 Cadillac SRX and 2005 2006 Cadillac STS. New Individual Horizontal Style Ignition Coil, which replaces the Old Design Coil with Vertical Connector. Please check if you need the vertical or horizontal coil before purchasing. Not for the rack style engine. Only for single coil engine. Compatible Part Numbers: 12594176, 099700-0940, C1556 One Year Warranty 2006 Buick Lucerne 2nd Design Ignition Coil 2006 Cadillac DTS 2nd Design Ignition Coil 2006 Cadillac SRX 2nd Design Ignition Coil V8 4.6L 2006 Cadillac STS 2nd Design Ignition Coil V8 4.6L 2006 Cadillac STS-V 2nd Design Ignition Coil 2006 Cadillac XLR 2nd Design Ignition Coil V8 4.6L 2006 Cadillac XLR-V 2nd Design Ignition Coil 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