Spark plugs are one of the main components of the ignition system. Its main role is to force electricity to jump across a gap in order to create the spark needed to start your car. High voltage of electricity ranging from 40,000 to 100,000 volts is needed in order for it to cross the gap. Because of this, the spark plug equipped in your vehicle should be made from tough materials to endure this high voltage electricity. Over time though, your stock spark plugs will wear out. When this happens, securing replacement as soon as possible is vital. Trust on Bosch to give you a spark plug quality equal to your stock plug. Bosch Spark plug FR 7 LDC+ is crafted from high grade materials designed to endure any operating environment. Its durable and effective construction delivers consistent reliable service that lasts longer. Bosch BMW 3181 Spark plug FR 7 LDC+ offers more practical and cost effective options for part replacement. However, regular inspection and maintenance must be kept to extend its life efficiency and cut cost of part replacement. Equipping your car with high grade, functional and reliable 1991 BMW 3181 Bosch Spark plug FR 7 LDC+ is never wrong economy. Its long service life can save you thousands of dollars in return and reduce your chance of getting premature engine failure. Check out more application for high quality and heavy duty Bosch BMW spark plug available in our online catalog. Click on our online shopping to avail of the premium deals offered for Bosch products which make excellent choice for your next part replacement.