This little part basically controls how air gets routed through your secondary air injection system. Think of it as a valve, naturally, that opens and closes to direct airflow. It’s normally closed, and when the engine needs that extra air during cold starts or certain operating conditions, it opens up to let it through. It also cuts off the flow when it's not needed. It’s a pretty simple mechanical device, honestly. This system's whole job is to help lower emissions and improve cold – start performance. That secondary air gets pumped into the exhaust to burn off unburnt fuel that tends to hang around when the engine’s cold. It's a key part of making sure your car passes emissions tests and runs smoothly, especially when it’s chilly out. It works with other components – the air pump, the check valve – but this cut – off is what really manages the airflow. If this valve fails, it usually fails closed. That means the air can’t get through, and you’ll likely get a check engine light. You might notice rough idling, a decrease in fuel economy, and, like I said, failing an emissions test. Sometimes, it can even cause the engine to run poorly. It's not something that will make your engine instantly stop, but it’s definitely something you want to address. You can find these at places like Fixparts Online, and honestly, replacing it isn’t usually too difficult if you're comfortable with basic engine work. You’ll notice if it's failing, generally with the check engine light and potentially some performance issues. Your peace of mind matters: Enjoy a 12-month warranty on Secondary Air Valve Cut-Off (MPN 7.22560.40.0)!

About Pierburg

Pierburg is a distinguished German brand specializing in emission control, air supply, and fuel systems for modern vehicles. Originating from Germany, Pierburg focuses on sustainable and efficient solutions to support advanced automotive technologies.

Why Choose Pierburg?

• Pierburg parts are known for lasting a long time and working reliably, saving you money on repairs down the road. • We make parts for many popular car brands, so there's a good chance we have what you need. • Pierburg parts meet or exceed original equipment standards, meaning they perform as well as the parts your car came with. • We’re a trusted name in the auto parts industry with a history of innovation and quality. Performance you can rely on – Pierburg parts from FixParts Online.