Feature●High quality coated windings to improve durability and provide protection against internal shorts and dielectric breakdown●Silicone steel plates surrounding the ignition coil correctly match the original part size and number exactly●Laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed●Professional, premium aftermarket replacement●Provides the performance and dependability you expect from ACDelco●Manufactured to meet expectations for fit, form, and functionDescription ACDelco Professional D503A Ignition Coil