This cylinder, specifically the slave cylinder in most cases, takes the pressure from your master cylinder – which you push when you press the clutch pedal – and turns that hydraulic pressure into mechanical movement. It pushes on the fork that actually disengages the clutch. Some vehicles also use a concentric slave cylinder built right into the bellhousing. It’s a pretty simple device, really, just a piston inside a tube. It's a critical part of how you shift gears. When you press the clutch pedal, the master cylinder sends fluid to this cylinder. That pushes a rod, which moves the throwout bearing, and that bearing disengages the engine from the transmission. Without it working properly, you won't be able to get the car into gear, or it might not fully disengage, making shifting rough or impossible. It’s basically the muscle that does the work of separating the engine and transmission so you can change gears smoothly. Well, if it starts to leak or fails, you’ll notice if you have trouble getting the car into gear, or if the clutch pedal feels spongy or goes to the floor. Sometimes, you’ll get a complete loss of clutch function—you won’t be able to shift at all. It acts like a shield protecting the rest of your clutch system from wear and tear, and when it goes, everything starts to feel the impact. A failing cylinder can damage other clutch components, so addressing it early is best. You can find replacement cylinders – and a lot of other parts, honestly – over at Fixparts Online. It’s something you definitely want to keep an eye on and replace when needed to avoid bigger, more expensive problems down the road. Trusted brand, trusted warranty: Cylinder (MPN 4F0721257D) has a 12-month guarantee!

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. FixParts Online – Your Trusted Source for Quality Audi Auto Parts.