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2017 BMW 420i

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  2. Auto Parts
  3. Ignition
  4. Secondary Ignition for 2017 BMW 420i

Secondary Ignition
for your 2017 BMW 420i


Your BMW 420i ignition system includes two circuits that work together to deliver the spark to the spark plug. The secondary ignition connects the spark plug and ignition coil, while the primary circuit connects the coil and battery. Malfunctions in either circuit can cause problems starting your vehicle, so consider replacement parts from StockWiseAuto.com.


In today's vehicles, you have a choice of either an electronic or distributor-free ignition system. Use caution when testing the secondary circuit; it carries a high-voltage current. When you've determined that your BMW 420i needs a new secondary ignition, come to StockWiseAuto.com for the lowest prices in OEM parts.