About Ignition Coils
Ignition Coils
As the aftermarket leaders in ignition coils, BWD® and Intermotor® offer full line coverage for all makes and models, with the trusted quality and performance that only comes with years of experience. This product category will be at the forefront for years to come, and BWD® and Intermotor® are leading the way with an expansive selection of quality ignition components, including cassette coils, coil-near-plugs, coil packs, and coil-on-plugs.
Elite Manufacturing and Testing
BWD® and Intermotor® engineer and manufacture high-quality ignition coils and ignition components at SMP’s 60,000 sq. ft. facility in Bialystok, Poland.
Highlights of the IATF 16949 and ISO 9001-certified facility include lean manufacturing methods and vertically integrated manufacturing processes that include multi-spindle winding, injection molding, potting, curing, and welding.
To ensure quality, all products manufactured at the facility undergo a full spectrum of measurement and life testing in addition to a full range of environmental analysis that includes thermal shock, thermal cycling, salt spray, vibration, and storage tests.
Ignition Coil-on-Plug (COP)
The ignition coil converts a low voltage current to high voltage energy that is delivered to the spark plug to ignite the air/fuel mixture within the cylinder. A coil-on-plug is designed to perform the functions of both the ignition coil which creates the spark energy, and the spark plug wire set that is designed to contain and deliver the high voltage energy to the spark plug. BWD and Intermotor Coil-on-Plug assemblies are engineered and tested to meet or exceed OE standards for spark energy, impedance, and durability.
Water Intrusion and Premature Coil Failure
A common problem on some GM models (4.2 inline 6 cyl. LL8 VIN code S – PRO LL8) is water intrusion that causes premature failure of the coil and spark plugs. But it's not a coil problem!
