Delphi Ignition Coil for BMW 5-series 520i 525i 530i 535i 550i 2000-2016 GN10571

Designed with the Delphi Difference.Delphi coils are designed—and endurance tested—to resist the common stresses that cause failure.We’ve used our 100 years of OE ignition system experience to create a world-leading magnetic design and modeling capabilities.The result is an efficient coil design that ensures the power in the coil has a streamlined path to the spark plug. This design also reduces the occurrence of shorts inside the coil.Another Plus: Our Precision Manufacturing Processes.We back up our innovative ignition coil design with intelligent manufacturing. Delphi uses winding process techniques to control the length of wire between adjacent windings. That’s important because more length results in greater voltage differences, which in turn create more pressure that could break down the insulation and wire coating.More Welds. More Consistency.Our ignition coils feature 6 weld positions, which is typically more than other brands. We also use an electrostatic paint coating, which results in consistent coil inductance and prevents lamination separation.Greater Insulating PowerWe also use an epoxy vacuum technique to reduce air bubbles in the epoxy, since having fewer air bubbles increases the epoxy’s insulation quality and reduces the chances of energy punch through failures.Made with High Quality Materials We back our proven design with proven materials: High quality wires, as well as high quality wire coating that resists the cracks, pin holes and imperfections that most often lead to failure issues.