This hose is pretty straightforward. It’s designed to channel air from the air filter box, or sometimes the mass airflow sensor, directly into the throttle body. It’s a key part of the intake system, making sure the engine gets the clean air it needs to run properly. Because it’s “formed” it means it’s not just a straight piece of tubing, it’s bent and shaped to fit a specific route in your engine bay, usually with tight curves. Think of it like part of the engine’s breathing system. The engine sucks in air, and this hose is a dedicated pathway for that air. It’s not carrying fuel or anything else, just clean air. It’s usually made of a reinforced rubber or a durable plastic, because it has to withstand engine heat and changes in air pressure. It's often part of the system that measures how much air is coming into the engine, so a leak can really throw things off. A good throttle body hose keeps everything running efficiently. If it cracks, gets a hole, or collapses, unmetered air gets into the engine. You’ll notice if that happens, usually as rough idling, a loss of power, or even a check engine light. Sometimes it’s a subtle thing, just a slightly sluggish response when you hit the gas. It acts like a shield against outside contaminants too, preventing dirt and debris from getting into the sensitive parts of the engine. They don't always fail dramatically, often it’s a slow leak that causes problems over time. You can find these parts pretty easily, Fixparts Online has a good selection, and replacing it is usually a pretty simple job for someone comfortable working on cars. Technical support you can rely on: Formed Hose (MPN 13411738185) comes with a 12-month warranty!

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