12111459028 BMW S/S RELAY

Basically, this little guy reads the position of the crankshaft as it’s spinning inside your engine. It creates a signal – an electrical pulse – every time a specific point on the crankshaft passes by. Think of it like it's counting how fast and where the engine is turning. It’s a pretty simple job, but super crucial. That signal it sends? The engine’s computer – the ECU – uses that information to figure out exactly when to fire the spark plugs and inject fuel. It needs to know precisely when everything needs to happen for the engine to run smoothly. It works with other sensors, but this one is fundamental. Without it, the computer is essentially flying blind. It tells the computer not just speed, but also the direction the engine is rotating. If this sensor fails, your engine will probably run rough, might not start at all, or could even stall. You’ll notice if it’s going bad because the engine will likely misfire, and the check engine light will definitely come on. It acts like a shield, protecting the engine from really bad timing issues. Replacing it usually isn't a huge job, and getting a new one is fairly inexpensive. You can find them pretty easily online, even at places like Fixparts Online. It’s a relatively small part, but a failing one can cause a big headache. Dedicated to your needs: Ignition Pulse Generator (MPN 12111459028) comes with a 12-month warranty!

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