This pump creates vacuum – basically, it sucks air out – and maintains a consistent level of vacuum in your braking system. It's a mechanical device, usually driven by the engine, and it’s responsible for powering things like your power brakes and sometimes other systems that rely on vacuum. It doesn't actually create the initial vacuum, it maintains it after the engine stops, and compensates for any leaks. Think of it as the heart of your vacuum – assisted brake system. It’s connected to the master cylinder and, through that, to the brake boosters. It's also often connected to things like your HVAC controls – some doors and actuators rely on vacuum to operate properly. Some vehicles even use vacuum for cruise control. It’s a pretty important component, and on many modern cars it’s essential for those features to work correctly. Well, if this pump fails, you’ll notice if you have power brakes. Your brake pedal will feel really hard, requiring a lot more effort to stop the vehicle. It's like losing a helper – you're still able to stop, but it takes significantly more force. Beyond that, other vacuum – operated systems might start to malfunction too. You might have issues with your heater controls, or even cruise control could stop working. It acts like a shield, protecting these components and keeping them functioning smoothly. If you're looking to replace one, sites like Fixparts Online usually have a good selection. Dedicated support: Pump (MPN 4H0145156H) includes a 12-month warranty!

About Audi

Audi is a leading German automaker celebrated for crafting high-performance, luxury vehicles that combine advanced technology, elegant design, and exceptional driving experiences.

Why Choose Audi?

• Audi parts are made specifically for your vehicle, ensuring a perfect fit and reliable performance. • Using genuine Audi parts helps maintain your vehicle’s original quality and resale value. • Audi parts are rigorously tested to meet high safety and performance standards, giving you peace of mind. • We offer a wide range of Audi parts, so you can easily find what you need to keep your car running smoothly. Audi – trusted quality, available at FixParts Online!