SENDER UNIT FUEL TANK

Ignition coils play a vital role in the performance, efficiency, and health of your M52, M52TU, M54 (2001-2002), M62, S52, and S62 BMW engine. Each cylinder gets its own ignition coil for optimum efficiency (no more spark plug wires) and it fires at precisely the right time to ensure a complete burn of the fuel/air mixture. A bad coil will result in misfires, rough running, stumbling, poor fuel economy, and other engine issues. Also, unburnt fuel will also damage catalytic converters and O2 sensors. Diagnosis of misfires and rough running almost always starts with the ignition coils. You can usually isolate faulty coils by moving them to different cylinder banks. However, we always recommend replacing coils in complete sets to eliminate the damage to computers, control modules, and other electrical systems from a voltage spike. Price listed is per coil. This part number includes the rubber connector boot. This coil is produced by Hella, an original supplier to BMW for ignition coils and many other ignition and others parts for your car. It has a two year warranty. This ignition coil has been revised by BMW several times and is sometimes referenced by multiple different part numbers. This coil replaces the following ignition coil part numbers: 12131748018, 12139067830 and Bosch part #0221504029.