【❗Fitment Or Compatibility:❗】Designed For Audi A8 Quattro 2003,2006 With V8 4.2L; Intended As An OE-Style Interchange For Like-For-Like Fit.
✅【Purpose:】Transfers Ignition Energy To Spark Plugs To Enable Normal Combustion Events In Each Cylinder.
✅【Replacement Reason:】Typically Replaced After Coil Insulation Degradation Or Internal Failure That Can Cause Cylinder Misfires Or Check-Engine Codes.
✅【Construction Or Material:】Bobbins And High-Insulation Potting Compound With Durable Boot Materials (Rubber, Silicone, Or Phenolic Resin) To Resist Wear.
✅【Testing Or Installation:】Individual Coil Units Are Tested For Electrical Integrity And Supplied With OE-Style Connectors For Direct Installation.