This little guy basically listens for engine knock, or pinging. That’s an abnormal combustion happening inside the engine. It’s a type of sensor that picks up vibrations caused by that knock – think of it like a really sensitive microphone inside your engine. It doesn't stop the knock, it just detects it and sends a signal to the engine computer. The engine computer uses that signal from the knock sensor to adjust the engine timing. If it hears knock, it will slightly retard the timing—basically tell the engine to fire a tiny bit later. That helps reduce the knock and prevents damage. It's part of a feedback loop—the sensor tells the computer something’s off, and the computer makes a small adjustment to fix it. You’ll notice if a knock sensor goes bad because your engine might run rough, the check engine light will probably come on, and you could lose power or fuel economy. Sometimes it just feels like the engine isn’t running as smoothly as it should. It’s important because engine knock can seriously damage your engine over time. It’s like hitting the pistons with a hammer with each combustion. The knock sensor is really acting like a shield, preventing that damage by letting the computer make those adjustments. Ignoring it can lead to expensive repairs down the road – things like damaged pistons, connecting rods, even cylinder heads. You can find these pretty easily, Fixparts Online has a good selection, but it's something you want to address when it starts acting up. Year-round reliability: Knock Sensor (MPN 0261231314) includes a 12-month warranty!

About Bosch

Robert Bosch GmbH is a global leader in automotive technology, offering high-quality parts and systems that enhance vehicle efficiency, safety, and reliability.

Why Choose Bosch?

• Bosch parts are known for lasting a long time, so you won't have to replace them often. • They're made with high-quality materials and tested thoroughly, meaning they perform reliably. • Bosch offers a wide range of parts, so you're likely to find what you need for almost any vehicle. • Mechanics and drivers around the world trust Bosch – it’s a name you can depend on. Drive with confidence – choose Bosch parts at FixParts Online.