Buy OEM Cadillac Part # 12632479 (12590990, 12610626, 12618542, D508C, D515C). Direct Ignition Coil. Ignition Coil - Repair or Replace A failed ignition coil in your Cadillac can lead to anything from an

Coil. Ignition.
An induction Coil, placed on each sparkplug of a vehicle and used with and ECU and a Camshaft or Crankshaft position sensor for timing, to transform a vehicles battery voltage to a much higher voltage needed to create proper spark in the spark plug. Assembly -. On Plug (COP). Direct.

Direct Ignition Coil

Ignition Coil - Repair or Replace
A failed ignition coil in your Cadillac can lead to anything from an intermittent misfire to a car that won't start.