04L906455G Volkswagen operating

This part essentially controls how much exhaust gas gets recirculated back into the engine. It’s usually a diaphragm or solenoid that opens and closes a valve, responding to signals from the engine computer. It manages the flow, making sure the right amount of exhaust goes back for emissions control, and doesn’t disrupt normal engine operation. Some are pneumatic, using vacuum to actuate, while others are electronic. Its job is all about cleaning up your exhaust. By reintroducing a bit of exhaust gas, it lowers combustion temperatures. Lower temperatures mean less nitrogen oxides—that’s the stuff that creates smog—are formed. It’s a key part of your vehicle’s emissions system, working with the catalytic converter to keep things running cleanly and legally. It's all about meeting those emissions standards. If this part fails, a few things can happen. You might get a check engine light, that's the most common sign. You might also notice rough idling, poor fuel economy, or even the engine stalling. Sometimes it can cause the engine to run rich or lean. It acts like a shield protecting your catalytic converter from overheating. If the EGR isn't working right, you could end up failing an emissions test, or worse, damaging other engine components. You’ll notice if it's failing, usually through a performance issue or a warning light. Fixparts Online has a good selection of these, and it's worth checking to make sure you're getting a quality replacement if you need one. Customer-approved reliability: Operating (MPN 04L906455G) includes a 12-month warranty!

About Volkswagen

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• Get parts made specifically for your VW, ensuring a perfect fit and reliable performance. • Volkswagen parts are quality-tested to meet strict standards, so you can drive with confidence. • Using genuine VW parts helps maintain your vehicle’s value and original engineering. • We offer a wide selection of parts and accessories, so you can find exactly what you need to keep your VW running smoothly. Drive with confidence – choose Volkswagen parts at FixParts Online.