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Ignition Coil Replacement 0221504470 12137594937 12137562744 12137571643 For BMW 325I 325Ci 328I 330Ci 335I 525I X3 X5 M5 M6 Z4

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Item Specifics
Product Description

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Product Specification
Product Name Ignition Coil
Part No. 0221504470 12137594937 12137571643
MOQ 10 pcs
Lead Time 3 to 20 working days subject to quantity.
Product Condition Refurbished Original
Quality 100% tested before shipment.
Warranty 12 Months.
Packing Neutral packing boxes, poly bags or customized package.
Application

For BMW 128i 2008-2011
For BMW 135i 2008-2011
For BMW 328i 2007-2011
For BMW 328i xDrive 09-2011
For BMW 335i 2007-2011
For BMW X3 2007-2010
For BMW X5 2007-2010
For BMW X6 2007-2010
For BMW Z4 2007-2010

Working Principle

An ignition coil (also called a spark coil) is an induction coil in an automobile's ignition system that transforms the battery's low voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel. Some coils have an internal resistor, while others rely on a resistor wire or an external resistor to limit the current flowing into the coil from the car's 12-volt supply. The wire that goes from the ignition coil to the distributor and the high voltage wires that go from the distributor to each of the spark plugs are called spark plug wires or high tension leads. Originally, every ignition coil system required mechanical contact breaker points and a capacitor (condenser). More recent electronic ignition systems use a power transistor to provide pulses to the ignition coil. A modern passenger automobile may use one ignition coil for each engine cylinder (or pair of cylinders), eliminating fault-prone spark plug cables and a distributor to route the high voltage pulses.

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