6Q0615426C Volkswagen CALIPER

Basically, the caliper houses the brake pads and uses hydraulic pressure to squeeze those pads against the brake rotor—that’s the disc that spins with your wheel. That squeezing action is what creates the friction to slow down or stop your vehicle. It's a pretty simple idea, but it’s absolutely vital. There’s a piston inside that pushes the pads, and that piston relies on brake fluid pressure from your master cylinder. Some calipers have a single piston, others have multiple – that just affects how evenly the pads clamp down. It’s a core part of your braking system, naturally. When you press the brake pedal, you're sending fluid pressure through the lines to these calipers at each wheel. The caliper then clamps down on the rotor. Think of it like this: the rotor is what's trying to keep the wheel spinning, and the caliper, with the pads, acts like a shield, resisting that rotation. Without a functioning caliper, you'd have very limited ability to stop. Each wheel has its own caliper, so they all work together to bring the vehicle to a halt. Well, your safety, for one. If a caliper fails, you’ll notice if it's pulling to one side when you brake, or maybe the pedal will feel spongy. Sometimes you’ll even hear a grinding noise, especially if the pad has worn down and the metal backing plate is hitting the rotor. It’s a serious deal, and shouldn’t be ignored. A failed caliper can dramatically increase your stopping distance, or even cause complete brake failure on that wheel. You can find replacements pretty easily – we often have a good selection at Fixparts Online, but any auto parts store will carry them. It’s a relatively common repair, but best done sooner rather than later. Top-rated performance: Caliper (MPN 6Q0615426C) has a 12-month warranty!

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