13627548660 BMW Speed sensor

This sensor’s job is pretty straightforward – it monitors how fast the crankshaft is spinning. The crankshaft is a key part of the engine, turning back and forth to ultimately power the wheels. The sensor reads tiny changes and sends that information to the engine’s computer, basically telling it “the engine is spinning this fast.” It’s an electronic pulse, a signal that says “everything is moving as it should.” Think of it as a key piece in a chain of events. The engine computer uses the speed sensor's information alongside data from other sensors to control things like fuel injection and ignition timing. It figures out when to spray fuel into the cylinders and when to spark the plugs. Without accurate speed data, the computer can’t do those things efficiently. It's vital for everything from starting the engine to maintaining a smooth idle and delivering power when you hit the gas. If this sensor fails, things can get rough quickly. You’ll probably notice if it’s bad because the engine might stall, have trouble starting, or run really poorly – like a misfire or rough idling. In some cases, it can even prevent the engine from starting at all. It's a relatively small part, but a hugely important one. We carry these pretty regularly, and you can find a good selection over at Fixparts Online if you want to take a look. It's one of those things you really don’t want to put off fixing if you suspect it's failing. Upgrade your vehicle with Speed Sensor (MPN 13627548660), covered for 12 months!

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