The Audi S4 brake caliper is an essential component of your car's braking system. The S4 brake caliper is a U-shaped device that is affixed to your vehicle's frame. There are one or more pistons on each side of the Audi S4 brake caliper.

The brake rotor spins within the U of the S4 brake caliper, and brake pads are mounted on top of the pistons. The Audi S4 brake caliper is connected to brake lines, which channel high-pressure hydraulic fluid from the master cylinder to push the pistons inward.

When you apply pressure to your brake pedal, the force is sent to the S4 brake caliper, which clamps your brake pads against the rotor to generate friction that stops the rotation of the rotor, and therefore your wheels. Since your Audi S4 brake calipers are under a great deal of pressure, they are subject to damage from wear and tear.

More often, however, faulty S4 brake calipers are caused by the hydraulic brake fluid, which can rust out or corrode the insides of your Audi S4 brake calipers. The S4 brake calipers can become worn so that they do not fully engage the pads, or they may be frozen in place due to corrosion. Audi S4 brake calipers may also become damaged if you drive for too long with worn brake pads. If your brakes are squealing, grinding, or pulling to one side, this can indicate a problem with your S4 brake calipers or with another component of your brake system, usually the pads or the rotors.Bad Audi S4 brake calipers should be replaced as soon as possible, so feel free to browse our online catalogue for high-quality replacement S4 brake calipers at a great discount price.