This sensor basically measures the amount of air entering your engine. It doesn’t just guess, it figures out how much air is coming in, not just that air is present. It does this using a tiny heated wire – that’s the “hot – film” part. As air flows past it, the wire cools down. The sensor precisely measures how much cooling occurs and translates that into a mass airflow reading. It sends that reading to the engine’s computer, which then uses it to figure out how much fuel to inject. Think of it as one of the key pieces in keeping your engine running smoothly and efficiently. It’s upstream of the air filter, so it's one of the first things the engine "sees" when it comes to air intake. That data from this sensor is crucial for fuel mixture, ignition timing, and overall engine performance. Without an accurate reading, the engine can’t run its best. It's a critical piece of the puzzle, working with other sensors like the oxygen sensor to keep everything balanced. If this sensor fails or gets dirty, it can cause a whole range of problems. You’ll likely notice a drop in fuel economy – the engine might run rich, meaning it’s using too much fuel. You might also see a loss of power, rough idling, or even the check engine light coming on. It acts like a shield, protecting the engine from running incorrectly. A bad reading can eventually damage other parts, like your catalytic converter. You can find a replacement on sites like Fixparts Online if you need one, and honestly, replacing it is often a pretty straightforward repair that can save you money and headaches down the road. You’ll notice if it’s failing, usually through a noticeable change in how the car drives. Secure your purchase: Hot-Film Mass Air Flow Sensor (MPN 0281002861) 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. Bosch – trusted quality, available at FixParts Online!