ECCPP Ignition Coils for Ford Mercury Mazda Compatible with C1458 FD502 DG-500 DG513 DG539Pack of 6 Please check the description or use the year/make/model drop down bar and interchangeable part numbers to confirm the compatibility before purchase ECCPP's ignition coils are designed with proven materials, such as high quality wires and wire coating that resists the cracks, pin holes and imperfections that most often lead to failure issues ECCPP's replacement ignition coils are designed to be easy to install and contains high quality copper for specific application, low emissions and high energy output ECCPP's ignition coils are designed and endurance tested to resist the common stresses that cause failure Compatible with OEM numbers:DG500FD502DG5135C1449L8E12A366AB,1L8Z12029AB,DG5391L8212029AB1L8U12A366AA1L8Z12029AA,5C1617,AJ0318100,AJ0918100,C1458,C1561,XS2Z12029AAAJ0318100A,AJ0318100B,AJ0918100,AJC118100,FD495,XS2Z12029AA Preventing the ignition coil being heated or damp Turning off the ignition coil when the engine does not work Checking, clearing the ignition coil and tightening the connector in order to avoid short circuit or ground Controlling the engine capability to prevent excerssive voltage Changing the spark plug regularly